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COMNM COMNM COMNM COMNM COMNM Qcea3 Qcea1 Qcea2 Qcec1 Qcec2 Qceb1 Qceb1 Qceb2 Qceb2 Qcea2 DSrm DSs DSs Dc Dc Dc Dj Dj Dp Mca Mca Mca Mca Mcd Mcd Mcd Mcd Mcl Mcl Mcl Pweu Pweu Pweu wel wel wh wh Pww QTf Qafo Qafo Qafo Qafo Qafo Qafo Qafo Qafo Qafo Qafy Qafy Qafy Qafy Qafy Qfac Qfac Qfac Qfac Qfac Qfac Qfac Qfac Qfac Qfac Qfac Ql Ql Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qls Qmf Qmp Qmp Qp Qp Qp Qp Qp Qt Qta Qta Qta Qta Qta Qta Qta Qta SOp St Tcbg Tcc Tcc Tcc Tcc Tcc Tcc Tcv Tcv Tcv Tcv Tcv Tcv Tcv Tcv Tcv Tcv Tg Tchd Tchd Tig Tig Tig Tig Tj Tiv Tiv Tiv Tiv Tiv Tiv Tiv Tiv Tiv Tiv Tiv Tiv Tcd Tcd Tcd Tcd Tcd Tcd Tcd Tcd Tcd Tcd Tcd Tcd Tcd Tcd Tcd Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qccg1 Qcca5 Qcce1 Qcca4 Qcc Qccd1 Qcca2 Qcca1 Qcc Qccc1 Qcch1 Qcc Qcca3 Qccc4 Qcc Qcc Qccc3 Qccc2 Qcc Qccb1 Qcfa1 Qcfa2 Qcfa2 Qcfa2 Qcfa3 Qcfa3 Qcfa4 Qcfa9 Qcfa10 Qcfa5 Qcfa5 Qcfa8 Qcfa8 Qcfa8 Qcfa8 Qcfa8 Qcfb1 Qcfb2 Qcfb3 Qcfb3 Qcfb7 Qcfb4 Qcfb4 Qcfb4 Qcfb4 Qcfb5 Qcfb5 Qcfb5 Qcfb6 Qcfb6 Qcfb6 Qcfb6 Qcfb6 Qcfb6 Qcfb6 Qcfb6 Qcfb6 Qcfb6 Qcfb5 Qcfc1 Qcfc1 Qcfc4 Qcfc5 Qcfc8 Qcfc2 Qcfc3 Qcfc6 Qcfc6 Qcfc7 Qcfc3 Qcfd4 Qcfd1 Qcfd1 Qcfd2 Qcfd2 Qcfd2 Qcfd2 Qcfd2 Qcfd3 Qcfd3 Qcfe2 Qcfe2 Qcfe1 Qcfe1 Qcfe1 Qcfe3 Qcfe3 Qcfe3 Qcfe3 Qcfe3 Qcfe3 Qcfe2 Qcfe2 Qcfe1 Qcfe1 Qcfg1 Qcfg1 Qcfg2 Qcfg2 Qcfg2 Qcfg2 Qcfg2 Qcfg2 Qcfg2 Qcff2 Qcff2 Qcff1 Qcff1 Qcff1 Qcff1 Qcff3 Qcff3 Qcff3 Qcff3 Qcff3 Qcff3 Qcff3 Qcff3 Qcff3 Qcfh7 Qcfh3 Qcfh3 Qcfh3 Qcfh5 Qcfh6 Qcfh2 Qcfh2 Qcfh2 Qcfh8 Qcfh8 Qcfh8 Qcfh1 Qcfh1 Qcfh1 Qcfh4 Qcfh4 Qcfh2 Qsbb1 Qsbb1 Tsbf1 Qsbd1 Qsbc33 Qsbc37 Qsbc46 Tsbf1 Qsbc45 Qsbc47 Qsbc43 Qsbc49 Qsbb19 Qsbc33 Qsbb23 Qsbc38 Qsbc31 Qsbc44 Qsbc33 Qsbb20 Qsbc31 Qsbc33 Qsbc48 Qsbc39 Qsbc39 Qsbc40 Qsbc39 Qsbb18 Qsbc34 Qsbd1 Qsbc41 Qsbb21 Qsbc39 Qsbb17 Qsbc30 Qsbc42 Tsbf1 Qsr1 Qsbc34 Qsbd2 Tsbf1 Qsbc31 Qsbc31 Qsbc3 Qsbc29 Tsbf2 Qsbd2 Qsbc3 Tsbf2 Qsbc3 Qsbc13 Qsbc1 Qsbc2 Qsbb22 Qsbc3 Qsbd4 Qsbb36 Qsbc28 Qsbb15 Qsbb18 Qsbd4 Qsbc12 Qsbc4 Qsbc35 Qsbb36 Qsbc19 Qsbc5 Qsbc3 Qsbc27 Qsbc15 Qsbc3 Qsbc3 Qsbc32 Qsbc8 Qsbc11 Qsbc36 Qsbb36 Qsbc9 Qsbc10 Qsbc26 Qsbc32 Qsbc36 Qsbc16 Qsbb37 Qsbc17 Qsbb16 Qsbb37 Qsbc32 Qsbc7 Qsbb3 Qsbc36 Qsbd6 Qsbb36 Qsbb37 Qsbd5 Qsbc16 Qsbc31 Qsbb13 Qsbc32 Qsbd3 Qsbc18 Qsbb36 Qsbb36 Qsbb30 Qsbc60 Qsbb28 Qsbc14 Qsbb36 Qsbc63 Qsbb36 Qsbb5 Qsbb16 Qsbb3 Qsbb5 Qsbb4 Qsbb5 Qsbc61 Qsbb36 Qsbb13 Qsbb2 Qsbc26 Qsbc26 Qsbc7 Qsbb36 Qsbb37 Qsbb9 Qsbb7 Qsbd3 Qsbc26 Qsbb32 Qsbc26 Qsbb36 Qsbb10 Qsbc62 Qsbc20 Qsbb36 Qsbb36 Qsbb33 Qsbb10 Qsbc25 Qsbb6 Qsbb37 Qsbb26 Qsbb11 Qsbb29 Qsbb37 Qsbb35 Qsbc26 Qsbb2 Qsbc26 Qsbc22 Qsbb37 Qsbc60 Qsbb8 Qsbc7 Qsbb25 Qsbc7 Qsbc7 Qsbb31 Qsbb27 Qsbc7 Qsbc52 Qsbc57 Qsbc26 Qsbc58 Qsbc23 Qsbb14 Qsbb37 Qsbc24 Qsbc55 Qsbc53 Qsbb36 Qsbc22 Qsbc59 Qsbc56 Qsbb34 Qsbb36 Qsbb36 Qsbb24 Qsbb36 Qsbb34 Qsbb36 Qsbc50 Qsbc51 Qsbc54 Qsbb12 Qsbc21 Qsbc21 Qsbc21 Qsbc21 Qsbc21 Qsbc21 Qsbc21 Qsbc21 Qsbc21 Qsbc21 Qsbc21 Qsbc21 Qsbc21 Qsbc21 Qsbc21 Qsbc21 Qsbc6 Qsbd7 Qsr2 wh Pweu wel 6,020±160 2,180±70 7,360±60 6,600±60 6,500±60 7,840±140 11,000±100 10,240±120 7,470±80 2,400±300 >40,000 10,670±150 4,510±100 4,300±60 3,660±60 3,590±70 W-4370 W-4581 W-4488 W-4592 W-4587 W-4497 W-4305 W-4586 W-4511 W-5342 W-3918 W-4583 W-4742 W-4259 W-4339 W-4447 8A165 BDWI TmFI WchI BNwI 8A366 8A438 MnEI MnWI 8A072 8A294 8A318 8A617 8A533 8A201 8A213 8A117 GrCI GsWI WndI 8A509 8A641 HfrI FgBI BnLI 8A270 8A141 CrTI 8A557 KmaI 8A521 8A581 8A081 4B991 493B3 4B979 378B2 386B2 418B2 370B2 410B2 354B2 362B2 4B967 426B2 530B2 501B3 514B2 522B2 482B2 506B2 490B2 498B2 546B2 538B2 474B2 610B2 626B2 594B2 602B2 586B2 730B2 554B2 578B2 834B2 562B2 722B2 746B2 778B2 8A629 738B2 786B2 770B2 794B2 802B2 810B2 826B2 754B2 842B2 850B2 818B2 LvLI 8A189 714B2 LrxI 402B2 394B2 HudI BCSI BufI 8A105 2B576 8A378 8A462 8A330 8A342 8A225 8A605 8A593 8A306 8A282 8A450 8A237 8A249 BrDI BDLI 570B2 8A474 8A486 8A497 RfRI PhRI LarI 618B2 GrSI 8A261 762B2 CyKI CpCI 8A153 SerI NoCI HwyI 8A569 8A177 8A545 InWI 8A426 8A414 8A390 8A402 LsKI RsBI DdHI QtnI 8A048 8A060 434B2 442B2 466B2 458B2 450B2 65.2, 348.5 65.2, 352.5 64.9, 357.1 64.4, 350.9 62.1, 353.3 56.4, 350.6 58.9, 356.3 59.3, 359.9 58.9, 357.8 56.2, 359.4 57.6, 355.2 69.1, 355.6 69.8, 356.2 72.6, 14.3 52.2, 14.6 53.8, 16.1 55.3, 14 59.7, 353.5 59, 353 59.3, 348.1 56.9, 4.3 59.5, 16.4 57, 356.8 56.9, 355.9 64.3, 341.9 67.1, 338.2 59.2, 26.6 60.2, 16.7 62.3, 23.3 58.2, 0.8 48.1, 358.9 49.7, 8.5 46.5, 3.9 80.6, 2.3 83.3, 15.5 54.7, 1.4 48.6, 345.1 64.1, 342.9 62.5, 14.1 61.6, 329.7 56.2, 3.4 66.2, 6.6 67.9, 3.2 51.4, 343.1 59, 8.8 48.9, 4.7 51.5, 2 60.3, 339.6 60.2, 359.2 66.5, 351.7 57.1, 358.1 63.2, 344.7 69.5, 16.8 65.4, 337.2 40.2, 18 47.7, 19.9 66, 7.1 66.2, 358.6 57.8, 20.1 54.5, 15.6 61.7, 11.5 83.3, 101.3 63, 346.8 61.3, 355.7 63.8, 357.3 53.5, 3.3 62.7, 359.6 69, 308.1 71, 348.2 51.7, 344.3 64.6, 37.9 55.5, 324.6 21.2, 41.9 59, 112.8 77.3, 162.7 76.8, 173.2 82.2, 169.6 53.1, 351.1 71, 354.8 61.6, 344 48.1, 10 60.5, 16.1 60.5, 17.2 56.7, 353.1 59.6, 18.1 74.6, 66.2 50.7, 353 64.2, 355.5 63.1, 349.5 63.7, 349.8 66.2, 344.1 57.9, 338.9 54.4, 9.8 75.2, 7.6 54.4, 5 56.7, 10.8 67.8, 355.3 65.8, 344.8 67.1, 345.6 59.6, 354.8 65.4, 341.6 70.1, 358.5 53.6, 8.9 54.7, 2 48.9, 359.1 59.4, 13.5 66, 358.4 59.2, 13 58.5, 10.6 57.8, 15.6 58.1, 10.2 58.1, 14 63.1, 0.3 62.7, 0.4 59.1, 353 60.7, 19.9 57.2, 20.3 55.2, 5.4 59.9, 20.9 65.1, 10.5 59.2, 353.1 65.4, 352.4 65.9, 358.1 57.6, 7.8 60.6, 350.1 70.9, 356.6 70.1, 359.4 60.1, 349.8 61.2, 353.3 59.5, 349.7 60, 354.8 53, 1.4 63.9, 351.6 57, 352.6 57.8, 359 57.9, 353.1 58.1, 357.7 59.8, 3.1 62.1, 4.3 57, 27.4 61.4, 25 62.8, 11.6 4 30 35 15 20 35 20 20 10 20 10 15 25 55 20 35 35 30 30 35 17 30 20 15 30 20 17 15 12 15 10 30 25 40 40 35 70 65 70 45 50 50 70 20 25 30 20 25 20 40 5 10 45 25 45 40 30 10 35 40 20 10 60 45 65 40 20 20 60 60 70 85 55 50 45 33 20 30 10 30 15 35 30 60 30 40 60 40 35 50 40 55 40 20 60 30 70 45 45 25 45 65 35 40 60 40 35 80 35 40 15 35 45 40 35 35 35 35 20 35 25 20 55 40 40 80 65 25 40 45 70 30 40 20 30 20 20 35 35 35 30 30 25 7 65 25 25 15 25 25 30 25 25 30 40 25 45 25 35 25 25 35 35 30 30 20 30 50 65 45 35 45 50 55 40 35 45 40 35 40 35 25 50 25 30 50 40 70 20 25 25 30 25 45 35 40 20 40 45 80 30 45 40 55 70 20 45 35 40 30 20 25 20 20 25 25 15 40 30 35 40 40 50 30 33 20 20 30 35 40 15 25 25 12 25 25 25 40 10 25 10 25 45 35 35 25 50 75 60 40 50 35 45 75 45 30 25 20 25 25 35 40 20 46 58 56 15 15 40 50 45 55 F-1 F-2 F-3 SRP-100 SRP-101 SRP-102 SRP-103 SRP-104 SRP-106 SRP-107 SRP-109 SRP-110 SRP-111 SRP-112 SRP-113 SRP-114 SRP-115 SRP-116 SRP-150 SRP-151 SRP-152 SRP-153 SRP-154 SRP-156 92KS5 92KS6 92KS17 76G021 76G022 LH-132 L87-74 LH-142 LH-127 92KS12A SRP-108 92KS13 92KS10A SRP-105 4.20±0.02 Ma 120±25 ka <50 ka 57±30 ka 116±15 ka 58±10 ka 425±20 ka 210±15 ka 106±10 ka 75±20 ka 265±30 ka 290±50 ka 113±10 ka 340±15 ka 470±25 ka 263±20 ka 120±12 ka 55±12 ka 325±10 ka 57±20 ka 64±20 ka 34±29 ka 3.55±0.13 Ma 433±78 ka 309±10 ka 294±15 ka 8.81±0.04 Ma 9.13±0.15 Ma 8.77±0.07 Ma 11.22±0.10 Ma 209±47 ka 480±50 ka 68±25 ka 182±172 ka <50 ka ? ? ? ? ? ? FLOWS, CONES, AND ERUPTIVE-FISSURE DEPOSITS OF THE SNAKE RIVER GROUP Craters of the Moon lava field RADIOCARBON AGE (n.d., not determined) (yr B.P.) LAVA FLOWS CINDER CONES CONE NAME ERUPTIVE-FISSURE DEPOSITS UNCONSOLIDATED SURFICIAL DEPOSITS n.d. 2,076±45 2,205±25 n.d. 2,400±300 n.d. n.d. n.d. n.d. 4,300±60 3,660±60 3,590±70 n.d. n.d. n.d. n.d. n.d. n.d. n.d. n.d. n.d. n.d. n.d. n.d. n.d. n.d. n.d. n.d. n.d. 4,510±100 6,020±160 6,600±60 6,500±60 7,360±60 10,240±120 7,470±80 7,840±140 10,670±150 11,000±100 12,010±150 15,100±160 Broken Top Blue Dragon Trench Mortar Flat North Crater Big Craters Serrate (Qcfa8) Devils Orchard (Qcfa9) Highway (Qcfa10) Vermillion Chasm Deadhorse Devils Caldron Minidoka Larkspur Park Rangefire Black Top Butte Indian Wells North Indian Wells South Sawtooth (Qcfc3) Big Cinder Butte NW (Qcfc4) South Echo Sheep Trail Butte Fissure Butte The Sentinel Silent Cone Carey Kipuka Little Park Little Laidlaw Park Grassy Laidlaw Lake Lava Point Pronghorn Heifer Reservoir Bottleneck Lake Sunset (Qcfg1) Carey (Qcfg2) Kimama Bear Den Lake Baseline Little Prairie No Name Lost Kipuka Crescent Butte Brown FLOW NAMES A B C D E F G H n.d. Qcfa1 Qcfa2 Qcfa3 Qcfa4 Qcfa5 Qcfa8 Qcfa9 Qcfa10 Qcfb1 Qcfb2 Qcfb3 Qcfb4 Qcfb5 Qcfb6 Qcfb7 Qcfc1 Qcfc2 Qcfc3 Qcfc4 Qcfc5 Qcfc6 Qcfc7 Qcfc8 Qcfd1 Qcfd2 Qcfd3 Qcfd4 Qcfe1 Qcfe2 Qcfe3 Qcff1 Qcff2 Qcff3 Qcfg1 Qcfg2 Qcfh1 Qcfh2 Qcfh3 Qcfh4 Qcfh5 Qcfh6 Qcfh7 Qcfh8 Qcca1 Qcca2 Qcca3 Qcca4 Qcca5 Qccb1 Qccc1 Qccc2 Qccc3 Qccc4 Qccd1 Qcc Qcce1 Qccg1 Qcch1 Broken Top Big Craters The Watchman North Crater Black Top Butte Big Cinder Butte Sheep Trail Butte Fissure Butte The Sentinel Silent Grassy Sunset Qcea1 Qcea2 Qcea3 Qceb1 Qceb2 Qcec1 Qcec2 Qsbb5 Qsbb6 Qsbb7 Qsbb8 Qsbb9 Qsbb15 Qsbb16 Qsbb17 Qsbb18 Qsbb2 Qsbb3 Qsbb19 Qsbb20 Qsbb24 Qsbb25 Qsbb26 Qsbb27 Qsbb28 Qsbb10 Qsbb11 Qsbb12 Qsbb21 Qsbb1 Qsbb13 Qsbb22 Qsbb23 Qsbb14 Qsbb29 Qsbb30 Qsbb31 Qsbb32 Qsbb33 Qsbb34 Qsbb35 Qsbb36 Qsbb37 Qsbc1 Qsbc2 Qsbc5 Qsbc6 Qsbc7 Qsbc8 Qsbc9 Qsbc10 Qsbc11 Qsbc12 Qsbc13 Qsbc14 Qsbc15 Qsbc16 Qsbc17 Qsbc18 Qsbc27 Qsbc28 Qsbc19 Qsbc20 Qsbc29 Qsbc30 Qsbc32 Qsbc33 Qsbc34 Qsbc22 Qsbc23 Qsbc24 Qsbc25 Qsbc35 Qsbc52 Qsbc53 Qsbc54 Qsbc36 Qsr1 Qsr2 Qsbc37 Qsbc38 Qsbc39 Qsbc55 Qsbc56 Qsbc57 Qsbc58 Qsbc59 Qsbc60 Qsbc40 Qsbc41 Qsbc61 Qsbc62 Qsbc42 Qsbc43 Qsbc63 Qsbc44 Qsbc45 Qsbc46 Qsbc47 Qsbc48 Qsbc49 Qsbc50 Qsbc51 Qsbd3 Qsbd7 Qsbd1 Qsbd5 Qsbd6 Qsbd4 Qsbd2 Tsbf1 Tsbf2 Tg Tj Tcd Tcbg Tchd Tcv Tcc Pww Pweu wel wh Unconformity VOLCANIC ROCKS Unconformity Unconformity SEDIMENTARY ROCKS Hanging wall of Pioneer thrust Sun Valley Group Footwall of Pioneer thrust Mca Mcd Mcl Unconformity Unconformity Unconformity ? Idavada Volcanics Challis Volcanic Group Miocene Oligocene Eocene Lower Permian Upper Pennsylvanian Upper Mississippian Lower Mississippian Upper Devonian Middle Devonian Lower Devonian Upper Silurian Middle to Lower Silurian Middle Pennsylvanian TERTIARY PERMIAN PENNSYLVANIAN MISSISSIPPIAN DEVONIAN SILURIAN ORDOVICIAN ? early middle Pleistocene early Pleistocene Pliocene Holocene QUATERNARY late middle Pleistocene Ql Qmf Qta Qls Qfac Qc Qp Qmp Qafy Qt Qafo QTf Qsbc3 Qsbc4 Qsbc21 Qsbc26 Qsbc31 Age relations among units unknown Crescent Butte Age relations among all units in eruptive period H are unknown <50 ka 55 ka 57 ka 58 ka 64 ka 75 ka 106 ka 113 ka 116 ka 120 ka 210 ka 263 ka 265 ka 290 ka 293 ka 306 ka 325 ka 340 ka 425 ka 433 ka 470 ka 480 ka 3.55 Ma 4.20 Ma late Pleistocene 40 Ar/ 39 Ar and K-Ar ages Dp Dj Dc DSrm DSs St SOp ? ? Qsbb4 Copper Basin Group C O R R E L A T I O N O F M A P U N I T S ERUPTIVE PERIOD 400 ka Basaltic lava fields exclusive of Craters of the Moon lava field [Units are organized chronologically here, whereas they are grouped geographically in Description of Map Units. Black dots in boxes denote northwest, southwest, northeast, and southeast quadrants of map area where unit is located] ? Tig Tiv LIST OF MAP UNITS UNCONSOLIDATED SURFICIAL DEPOSITS Lacustrine deposits (Holocene) Deposits of modern flood plains (Holocene) Alluvium of tributary streams (Holocene and late Pleistocene) Landslide deposits (Holocene to early middle Pleistocene) Fan deposits of alluvium and colluvium (Holocene to early middle Pleistocene) Playa deposits (Holocene to early Pleistocene) Colluvium (Holocene to early Pleistocene) Deposits along main streams of Pinedale age (late Pleistocene) Younger fan alluvium (late Pleistocene) Travertine (Pleistocene) Older fan alluvium (late middle Pleistocene to early Pleistocene(?)) Older fan gravel (Pleistocene and Pliocene) HOLOCENE AND LATE PLEISTOCENE BASALTIC LAVA FLOWS AND RELATED CINDER CONE AND ERUPTIVE-FISSURE DEPOSITS OF THE SNAKE RIVER GROUP Craters of the Moon lava field Eruptive-period A Broken Top pahoehoe basalt flow (Holocene) Broken Top basaltic cinder cone deposits (Holocene) Blue Dragon pahoehoe and a'a basalt-hawaiite flows (Holocene) Big Craters basaltic cinder cone deposits (Holocene) Blue Dragon basaltic eruptive-fissure deposits (Holocene) Trench Mortar Flat pahoehoe and slab-pahoehoe basalt-hawaiite flows and near-vent tephra deposits (Holocene) The Watchman cinder cone deposits (Holocene) Trench Mortar Flat basaltic eruptive-fissure deposits (Holocene) North Crater pahoehoe basalt-hawaiite flow (Holocene) North Crater basaltic cinder cone deposits (Holocene) Big Craters pahoehoe and slab-pahoehoe hawaiite flows (Holocene) Big Craters basaltic eruptive-fissure deposits (Holocene) Serrate block and a'a latite flow (Holocene) Devils Orchard block and a'a latite flow (Holocene) Highway block, a'a, and pahoehoe latite flow (Holocene) Cinder mound deposits (Holocene) Eruptive-period B Vermillion Chasm pahoehoe basalt flows and near-vent tephra deposits (Holocene) Vermillion Chasm basaltic eruptive-fissure deposits (Holocene) Deadhorse pahoehoe basalt flows (Holocene) Deadhorse basaltic eruptive-fissure deposits (Holocene) Devils Caldron pahoehoe basalt-hawaiite flow (Holocene) Minidoka pahoehoe basalt flows (Holocene) Larkspur Park pahoehoe hawaiite flows (Holocene) Rangefire pahoehoe hawaiite-latite flows (Holocene) Black Top Butte pahoehoe hawaiite flow (Holocene) Black Top Butte basaltic cinder cone deposits (Holocene) Eruptive-period C Indian Wells North a'a latite flow (Holocene) Indian Wells South a'a latite flow (Holocene) Sawtooth a'a latite flows (Holocene) Big Cinder Butte NW a'a latite flow (Holocene) Big Cinder Butte basaltic cinder cone deposits (Holocene) South Echo pahoehoe basalt flow (Holocene) South Echo basaltic eruptive-fissure deposits (Holocene) Sheep Trail Butte pahoehoe and a'a basalt flows (Holocene) Sheep Trail Butte basaltic cinder cone deposits (Holocene) Fissure Butte pahoehoe and a'a basalt flows (Holocene) Fissure Butte basaltic cinder cone deposits (Holocene) Fissure Butte basaltic eruptive-fissure deposits (Holocene) The Sentinel pahoehoe and a'a basalt flow (Holocene) The Sentinel basaltic cinder cone deposits (Holocene) Eruptive-period D Silent Cone latite a'a flow (Holocene) Silent Cone basaltic cinder cone deposits (Holocene) Carey Kipuka hawaiite a'a flow (Holocene) Little Park hawaiite a'a flows (Holocene) Little Laidlaw Park hawaiite a'a flow (Holocene) Eruptive-period E Grassy pahoehoe and collapse-a'a basalt flow (Holocene) Grassy Cone basaltic cinder cone deposits (Holocene to latest Pleistocene) Laidlaw Lake pahoehoe and a'a basalt flows (Holocene) Lava Point a'a basalt flows (Holocene) Eruptive-period F Pronghorn pahoehoe and a'a basalt flows (late Pleistocene) Heifer Reservoir pahoehoe basalt flows (late Pleistocene) Bottleneck Lake pahoehoe and a'a basalt flows (late Pleistocene) Eruptive-period G Sunset pahoehoe and slab-pahoehoe basalt-hawaiite flows (late Pleistocene) Carey pahoehoe and slab-pahoehoe basalt-hawaiite flows (late Pleistocene) Sunset Cone basaltic cinder cone deposits (late Pleistocene) Eruptive-period H Kimama pahoehoe basalt flow (late Pleistocene) Bear Den Lake pahoehoe basalt flows (late Pleistocene) Baseline pahoehoe basalt flows (late Pleistocene) Little Prairie pahoehoe and a'a basalt flows (late Pleistocene) No Name pahoehoe basalt flow (late Pleistocene) Lost Kipuka pahoehoe basalt flow (late Pleistocene) Crescent Butte pahoehoe basalt flow (late Pleistocene) Crescent Butte basaltic cinder cone deposits (late Pleistocene) Brown pahoehoe basalt flow (late Pleistocene) Basaltic cinder cones, undivided (Holocene and late Pleistocene) PRE-HOLOCENE BASALTIC LAVA FIELDS AND ASSOCIATED FLOWS, VENTS, AND ERUPTIVE-FISSURE DEPOSITS OF THE SNAKE RIVER GROUP [Units are grouped geographically here, whereas they are organized chronologically in Correlation of Map Units] Basaltic lava fields of northwestern part of map area Paddelford Flat, Carey, and Little Wood River areas Basaltic pahoehoe flows and pyroclastic deposits of Vent 4895 lava field (late Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Paddelford Flat lava field (late middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Vent 5074 lava field (late middle Pleistocene) Basaltic pahoehoe flows (late middle Pleistocene) Basaltic pahoehoe flows of Campbell Reservoir–South Fork Muldoon Creek area (early middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Fish Creek Reservoir (inferred to be early middle Pleistocene) Basaltic pahoehoe flows of upper Little Wood River and South Fork Muldoon Creek areas (early Pliocene) Basaltic pahoehoe flows of lower Little Wood River area (early Pliocene) Little Park area Basaltic pahoehoe flows and pyroclastic deposits of Little Park lava field (late middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Vent 5129 lava field (late middle Pleistocene) Laidlaw Park and Little Laidlaw Park areas Basaltic pahoehoe flows and pyroclastic deposits of Hollow Top lava field (late middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Turnbull Butte lava field (late middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Big Blowout Butte lava field (late middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Vent 5237 lava field (late middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Bullshot Reservoir lava field (late middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Blowout Reservoir lava field (late middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Bowl Crater lava field (late middle Pleistocene) Pyroclastic deposits of North Laidlaw Butte cinder cone complex (inferred to be late middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Potter Butte lava field (late middle Pleistocene) Pyroclastic deposits of Vent 5370 (late middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Vent 5136 lava field (late middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Ant Butte lava field (late middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Corral Butte lava field (late middle Pleistocene) Carey Kipuka cinder cone deposits (late middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits (Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Laidlaw Butte lava field (early middle Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Snowdrift Crater lava field (early middle Pleistocene) Basaltic lava fields of southwestern part of map area Basaltic pahoehoe flows and pyroclastic deposits of Bear Den Butte lava field (late Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Vent 5168 lava field (late Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Lava Butte lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Broken Top Butte lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Sand Butte lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Spud Butte lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of west Wildhorse Butte lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Monument Butte lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of The Blowout lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 4792 lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits near spot elevation 4673 ft (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Wagon Butte lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Black Ridge Crater lava field (late Pleistocene) Basaltic pahoehoe flows and pyroclastic deposits of Vent 4708 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 4645 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 4550 lava field (late middle Pleistocene) Near-vent pyroclastic deposits and minor basaltic pahoehoe flows of Vent 4430 lava field (late middle Pleistocene) Minor basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 4626 lava field (late middle Pleistocene) Basaltic pahoehoe flows (late middle Pleistocene) Basaltic lava fields of northeastern part of map area Basaltic pahoehoe flows and near-vent pyroclastic deposits of Rock Corral Butte lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5438 lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5494 lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Fingers Butte lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Quaking Aspen Butte lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Coyote Butte lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5159 lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Serviceberry Butte lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5206 lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5328 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5359 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5119 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5244 lava field (late middle Pleistocene) Basaltic pahoehoe flows (late middle Pleistocene) Near-vent pyroclastic deposits and pahoehoe basalt flows of Vent 5149 and Rattlesnake Butte eruptive fissures (late middle Pleistocene) Near-vent pyroclastic deposits and pahoehoe basalt flows of Saddle Butte lava field (late middle Pleistocene) Near-vent pyroclastic deposits and pahoehoe basalt flows of Cruthers Butte lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Pratt Butte lava field (late middle Pleistocene) Near-vent pyroclastic deposits of China Cup cinder cone (late middle Pleistocene) Massive, aphyric, white rhyolite of Big Southern Butte (late middle Pleistocene) Devitrified, flow-banded rhyolite flows, and sugary-textured rhyolite of Big Southern Butte (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5571 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of east Wildhorse Butte lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Huddles Hole lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of southeast Wildhorse Butte lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5549 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5575 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5609 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5337 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Tin Cup Butte lava field (late middle Pleistocene) Basaltic pahoehoe flows of Sixmile Butte lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Teakettle Butte lava field (late middle Pleistocene) Basaltic pahoehoe flows (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5128 lava field (late middle Pleistocene) Near-vent pyroclastic deposits and shelly-pahoehoe basalt flows of Shadow cinder cone (late middle Pleistocene) Near-vent pyroclastic deposits and shelly-pahoehoe basalt flows of Vent 5265 cinder cone (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Antelope Butte lava field (early middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5221 lava field (early middle Pleistocene) Basaltic lava flows on north face of Big Southern Butte (late middle and early middle Pleistocene) Basaltic lava fields of southeastern part of map area Basaltic pahoehoe flows of Vent 5108 lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Horse Butte lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 4946 lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Mule Butte lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Split Top lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5317 lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5252 lava field (late Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 4902 lava field (late middle Pleistocene) Basaltic pahoehoe flows (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 4892 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5329 lava field (late middle Pleistocene) Basaltic pahoehoe flows (late middle Pleistocene) Near-vent pyroclastic deposits and basaltic pahoehoe flows (Pleistocene) Basaltic pahoehoe flows (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Mosby Butte lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5083 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Rock Lake lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5179 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Gasten Beattie lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5365 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Mosby Well lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Streifling lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5358 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5374 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5183 lava field (late middle Pleistocene) Basaltic pahoehoe flows and near-vent pyroclastic deposits of Packsaddle Butte lava field (late middle Pleistocene) VOLCANIC ROCKS ALONG NORTHWEST MARGIN OF EASTERN SNAKE RIVER PLAIN Idavada Volcanics (Miocene) Gravel (Miocene) Jasperoid (Oligocene? and Eocene?) Gossan (pre-Miocene and post-Permian) Challis Volcanic Group (Eocene) Rhyolite, leucogranite, and granite pegmatite and aplite dikes Biotite granite of Cottonwood Creek Hornblende diorite of Little Cottonwood Creek Dacitic and andesitic volcanic rocks Basal conglomerate SEDIMENTARY ROCKS Sun Valley Group Wood River Formation (Lower Permian to Middle Pennsylvanian) Wilson Creek Member (Lower Permian) Eagle Creek Member (Lower Permian to Middle Pennsylvanian) Upper part (Lower Permian to Upper Pennsylvanian) Lower part (Upper to Middle Pennsylvanian) Hailey Member (Middle Pennsylvanian) Copper Basin Group (Mississippian) Argosy Creek Formation (Upper and Lower Mississippian) Drummond Mine Limestone (Lower Mississippian) Little Copper Formation (Lower Mississippian) Picabo Formation (Upper Devonian) Jefferson Formation (Upper and Middle Devonian) Carey Dolomite (Middle to Lower Devonian) Roberts Mountains Formation (Lower Devonian and Upper Silurian) Siltstone (Devonian? and Silurian) Trail Creek Formation (Middle to Lower Silurian) Phi Kappa Formation (Middle Silurian to Lower Ordovician) Contact—Dashed where approximately located Flow line—Linear flow features and lava tubes; arrows show flow direction. Circular openings on flow lines are skylights in lava tubes Lava channel—Arrow shows direction of flow within lava channel Narrow—Channels <10 m wide Wide—Channels >10 m wide Crater—Outline of crater rim on volcanic vent. Barbs point toward central depression; barbs not shown on smaller craters Small cone—Small lava cone, cinder cone, or spatter cone Rootless vent—Secondary source of lava not directly related to conduit to deep magma reservoir. Most are openings in lava tubes Covered vent—Small vent that is remnant of larger vent now covered by flow that ponded in a central vent depression Lava pond—Basalt-filled depression surrounded by levees that are shown by hachured line. Ticks point toward lava pond Non-eruptive fissure—Fractures in rock through which lava has not erupted. Width generally <1 m Eruptive fissure—Fractures in rock through which lava has erupted. Width 1–2 m. Some eruptive fissures in Craters of the Moon lava field (Qcea1–3, Qceb1–2, Qcec1–2) are mapped as specific units because they were studied in some detail. Other eruptive fissures, such as those in pre-Holocene, mostly loess-covered lava fields, are mapped as general features Normal and (or) oblique-slip fault—Dashed where approximately located; dotted where concealed. Bar and ball on downthrown side where relative motion known. Arrows indicate relative lateral movement Thrust fault of Antler age (post-Devonian to pre-Middle Pennsylvanian)—Dotted where concealed. Solid teeth on upper plate Thrust fault of Mesozoic age—Dotted where concealed. Open teeth on upper plate. Probably has later normal movement down to west Anticline—Dashed where approximately located Overturned anticline Syncline—Dashed where approximately located; dotted where concealed Strike and dip of beds in sedimentary rocks and volcanic tuffs Inclined Vertical Horizontal Strike and dip of eutaxitic structures in welded ash-flow tuffs Inclined Vertical Fossil locality Radiocarbon dating sample locality—Charcoal- or carbon-bearing sediment. Showing laboratory number and age in 14 C yr B.P. See table 1 40 Ar/ 39 Ar age determination sample locality—Showing field number and age. See table 2 K-Ar age determination sample locality—Showing field number and age. See table 2 Paleomagnetic data sample locality—Showing site number and remanent inclination and declination. See table 3 Boundary of the Craters of the Moon National Monument (COMNM) 35 70 F-2 92KS5 34±29 ka 10,240±120 W-4586 BnLI 64.3, 341.9 SRP-102 <50 ka Qcea1 Ql Qmf Qta Qls Qfac Qp Qc Qmp Qafy Qt Qafo QTf Qcfa1 Qcca1 Qcfa2 Qcca2 Qcea1 Qcfa3 Qcca3 Qcea2 Qcfa4 Qcca4 Qcfa5 Qcea3 Qcfa8 Qcfa9 Qcfa10 Qcca5 Qcfb1 Qceb1 Qcfb2 Qceb2 Qcfb3 Qcfb4 Qcfb5 Qcfb6 Qcfb7 Qccb1 Qcfc1 Qcfc2 Qcfc3 Qcfc4 Qccc1 Qcfc5 Qcec1 Qcfc6 Qccc2 Qcfc7 Qccc3 Qcec2 Qcfc8 Qccc4 Qcfd1 Qccd1 Qcfd2 Qcfd3 Qcfd4 Qcfe1 Qcce1 Qcfe2 Qcfe3 Qcff1 Qcff2 Qcff3 Qcfg1 Qcfg2 Qccg1 Qcfh1 Qcfh2 Qcfh3 Qcfh4 Qcfh5 Qcfh6 Qcfh7 Qcch1 Qcfh8 Qcc Qsbb1 Qsbc1 Qsbc2 Qsbc3 Qsbd1 Qsbd2 Tsbf1 Tsbf2 Qsbc4 Qsbc5 Qsbc6 Qsbc7 Qsbc8 Qsbc9 Qsbc10 Qsbc11 Qsbc12 Qsbc13 Qsbc14 Qsbc15 Qsbc16 Qsbc17 Qsbc18 Qsbc19 Qsbc21 Qsbd3 Qsbd4 Qsbb2 Qsbb3 Qsbb4 Qsbb5 Qsbb6 Qsbb7 Qsbb8 Qsbb9 Qsbb10 Qsbb11 Qsbb12 Qsbb13 Qsbb14 Qsbc20 Qsbc22 Qsbc23 Qsbc24 Qsbc25 Qsbc26 Qsbb15 Qsbb16 Qsbb17 Qsbb18 Qsbb19 Qsbb20 Qsbb21 Qsbb22 Qsbb23 Qsbc27 Qsbc28 Qsbc29 Qsbc30 Qsbc31 Qsbc32 Qsbc33 Qsbc34 Qsbc35 Qsbc36 Qsr1 Qsr2 Qsbc37 Qsbc38 Qsbc39 Qsbc40 Qsbc41 Qsbc42 Qsbc43 Qsbc44 Qsbc45 Qsbc46 Qsbc47 Qsbc48 Qsbc49 Qsbc50 Qsbc51 Qsbd5 Qsbd6 Qsbd7 Qsbb24 Qsbb25 Qsbb26 Qsbb27 Qsbb28 Qsbb29 Qsbb30 Qsbb31 Qsbb32 Qsbb33 Qsbb34 Qsbb35 Qsbb36 Qsbb37 Qsbc52 Qsbc53 Qsbc54 Qsbc55 Qsbc56 Qsbc57 Qsbc58 Qsbc59 Qsbc60 Qsbc61 Qsbc62 Qsbc63 Tiv Tig Tj Tg Tcd Tcbg Tchd Tcv Tcc Pww Pweu wel wh Mca Mcd Mcl Dp Dj Dc DSrm DSs St SOp 43°30' 114°00' 113°00' 43°00' 10 8 9 11 3 5 6 4 1 7 2 2 INDEX TO SOURCES OF GEOLOGIC MAPPING SOURCES OF GEOLOGIC MAPPING 1. Champion and others (1989) 7. Kuntz, Skipp, and 11 others (1992) 2. Kuntz, M.A., unpublished mapping, 8. Larson (1974) 1977, 1992, 2002. 9. Sidle (1979) 3. Kuntz and others (1988) 10. Skipp, Betty, unpublished mapping, 4. Kuntz and others (1990) 1975, 1977, 1979, 1991–1994. 5. Kuntz and others (1989a) 11. Skipp and Hall (1975) 6. Kuntz and others (1989b) OREGON WESTERN SNAKE RIVER PLAIN WAPI LAVA FIELD MONTANA CRATERS OF THE MOON LAVA FIELD EASTERN SNAKE RIVER PLAIN STUDY AREA IDAHO WYOMING GREAT RIFT KINGS BOWL LAVA FIELD 0 100 200 KILOMETERS 0 50 100 MILES 117° 116° 115° 114° 113° 112° 111° 45° 44° 43° 42° INDEX MAP SHOWING LOCATION OF STUDY AREA NEVADA UTAH CRATERS OF THE MOON NATIONAL MONUMENT Base from U.S. Geological Survey, 1978. Projection and 10,000-m grid, zone 12, Universal Transverse Mercator. 50,000-ft grid ticks based on Idaho coordinate system, central and east zones. 1927 North American Datum Sources of geologic mapping shown on Index. Manuscript approved for publication April 18, 2007 U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY SCIENTIFIC INVESTIGATIONS MAP 2969 Pamphlet accompanies map Any use of trade names is for descriptive purposes only and does not imply endorsement by the U.S. Government For sale by U.S. Geological Survey Information Services Box 25286, Federal Center, Denver, CO 80225 1-888-ASK-USGS ArcInfo coverages and a PDF for this map are available at http://pubs.usgs.gov Printed on recycled paper GEOLOGIC MAP OF THE CRATERS OF THE MOON 30' X 60' QUADRANGLE, IDAHO By Mel A. Kuntz 1 , Betty Skipp 1 , Duane E. Champion 1 , Philip B. Gans 2 , D. Paco Van Sistine 1 , and Scott R. Snyders 1 2007 1 U.S. Geological Survey 2 Department of Geological Sciences, University of California, Santa Barbara, Calif. CONTOUR INTERVAL 20 AND 50 METERS NATIONAL GEODETIC VERTICAL DATUM OF 1929 1 10 KILOMETERS 0 1 2 4 3 5 6 7 8 9 SCALE 1:100 000 1 8 MILES 1 0 2 3 4 5 6 7 APPROXIMATE MEAN DECLINATION, 1978 MAGNETIC NORTH 17° TRUE NORTH QUADRANGLE LOCATION IDAHO Prepared in cooperation with the NATIONAL PARK SERVICE and the U.S. BUREAU OF LAND MANAGEMENT

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Page 1: Qfac Qafo - USGS

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7,360±60

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7,470±80

2,400±300

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10,670±150

4,510±100

4,300±60

3,660±60

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W-4370

W-4581

W-4488

W-4592

W-4587

W-4497

W-4305

W-4586

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8A521

8A581

8A081

4B991

493B3

4B979

378B2

386B2

418B2

370B2

410B2

354B2

362B2

4B967

426B2

530B2

501B3

514B2

522B2

482B2

506B2

490B2

498B2

546B2

538B2

474B2

610B2

626B2

594B2

602B2

586B2

730B2

554B2

578B2

834B2

562B2

722B2

746B2

778B2

8A629

738B2

786B2

770B2

794B2

802B2

810B2

826B2

754B2

842B2

850B2

818B2

LvLI

8A189

714B2

LrxI

402B2

394B2

HudI

BCSI

BufI

8A105

2B576

8A378

8A462

8A330

8A342

8A225

8A605

8A593

8A306

8A282

8A450

8A237

8A249

BrDI

BDLI

570B2 8A474

8A486

8A497RfRI

PhRI

LarI

618B2

GrSI

8A261

762B2

CyKI

CpCI

8A153

SerI

NoCI

HwyI

8A569

8A177

8A545

InWI 8A426

8A414

8A390 8A402LsKI

RsBI

DdHI

QtnI

8A048

8A060

434B2

442B2 466B2

458B2450B2

65.2, 348.5

65.2, 352.5

64.9, 357.1

64.4, 350.9

62.1, 353.3

56.4, 350.6

58.9, 356.3

59.3, 359.9

58.9, 357.8

56.2, 359.4

57.6, 355.2

69.1, 355.6

69.8, 356.272.6, 14.3

52.2, 14.6

53.8, 16.1

55.3, 14

59.7, 353.5

59, 353

59.3, 348.1

56.9, 4.3

59.5, 16.4

57, 356.8

56.9, 355.9

64.3, 341.9

67.1, 338.2

59.2, 26.6

60.2, 16.7

62.3, 23.3

58.2, 0.8

48.1, 358.9

49.7, 8.5

46.5, 3.9

80.6, 2.3

83.3, 15.5

54.7, 1.4

48.6, 345.1

64.1, 342.9

62.5, 14.1

61.6, 329.7

56.2, 3.4

66.2, 6.6

67.9, 3.2

51.4, 343.1

59, 8.8

48.9, 4.7

51.5, 2

60.3, 339.6

60.2, 359.2

66.5, 351.7

57.1, 358.1

63.2, 344.7

69.5, 16.8

65.4, 337.2

40.2, 18

47.7, 19.9

66, 7.1

66.2, 358.6

57.8, 20.1

54.5, 15.6

61.7, 11.5

83.3, 101.3

63, 346.8

61.3, 355.7

63.8, 357.3

53.5, 3.3

62.7, 359.6

69, 308.1

71, 348.2

51.7, 344.3

64.6, 37.9

55.5, 324.6

21.2, 41.9

59, 112.8

77.3, 162.7

76.8, 173.2

82.2, 169.6

53.1, 351.1

71, 354.8

61.6, 344

48.1, 10

60.5, 16.1

60.5, 17.2

56.7, 353.1

59.6, 18.1

74.6, 66.2

50.7, 353

64.2, 355.5

63.1, 349.5

63.7, 349.8

66.2, 344.1

57.9, 338.9

54.4, 9.8

75.2, 7.6

54.4, 5

56.7, 10.8

67.8, 355.3

65.8, 344.8

67.1, 345.6

59.6, 354.8

65.4, 341.6

70.1, 358.5

53.6, 8.9

54.7, 2

48.9, 359.1

59.4, 13.5

66, 358.4 59.2, 13

58.5, 10.6

57.8, 15.658.1, 10.2

58.1, 14

63.1, 0.3

62.7, 0.4

59.1, 353

60.7, 19.9

57.2, 20.3

55.2, 5.4

59.9, 20.9

65.1, 10.5

59.2, 353.1

65.4, 352.4

65.9, 358.1

57.6, 7.8

60.6, 350.1

70.9, 356.6

70.1, 359.4 60.1, 349.8

61.2, 353.3

59.5, 349.7 60, 354.853, 1.4

63.9, 351.6

57, 352.6

57.8, 359

57.9, 353.1

58.1, 357.7

59.8, 3.1

62.1, 4.3 57, 27.4

61.4, 2562.8, 11.6

4 30 35

15

20

3520

20

10

2010

1525

5520

35

35

30

30

35

1730

20

15

30

20

171512

15

10

30

25

40

40 35

7065

70

4550

50

70

20

25

30

2025

20

40

510

45

25

4540

30

10

3540

20

10

60

45

6540

20 2060

6070

8555

5045

3320

30

10

30

15

35

30

60

30

4060

40

35

50

40

5540

2060

3070

4545

25

45

65

35

4060

40

35

80

3540

1535

45

4035 35 35

3520

3525

20

55

40

40 80

65

2540 45 70

30

40

20

3020

20

35

35

35

30

3025

765

25

2515

25

25

30

2525

30

40

2545

25

35

25

25

35

3530

30

20

30

5065

45

35

455055

40

354540

35

40

35

25

50

2530

50

40

70

20

2525

30

254535

4020

40

45

80

30

4540

55 70

20

45

35

40

30

2025

20

20

25 25

15

40

30

35

40

40

50

30 33

20

20

30

35

40

1525

25 12

25

25

25 40

1025

10

25

4535

35

255075

604050 35

4575

45

30

25

2025

25

35

4020

46

58

56

15

15

40

50

45

55

F-1

F-2

F-3

SRP-100

SRP-101

SRP-102

SRP-103

SRP-104

SRP-106

SRP-107

SRP-109

SRP-110

SRP-111

SRP-112

SRP-113

SRP-114

SRP-115

SRP-116

SRP-150SRP-151

SRP-152

SRP-153

SRP-154

SRP-156

92KS5

92KS6

92KS17

76G021

76G022

LH-132

L87-74

LH-142

LH-127

92KS12A

SRP-108

92KS13

92KS10A

SRP-105

4.20±0.02 Ma

120±25 ka

<50 ka

57±30 ka

116±15 ka

58±10 ka

425±20 ka

210±15 ka

106±10 ka

75±20 ka

265±30 ka

290±50 ka

113±10 ka

340±15 ka

470±25 ka

263±20 ka120±12 ka

55±12 ka

325±10 ka

57±20 ka

64±20 ka

34±29 ka

3.55±0.13 Ma

433±78 ka

309±10 ka

294±15 ka

8.81±0.04 Ma

9.13±0.15 Ma

8.77±0.07 Ma

11.22±0.10 Ma

209±47 ka

480±50 ka

68±25 ka

182±172 ka

<50 ka

?

?

?

??

?

F L O W S , C O N E S , A N D E R U P T I V E - F I S S U R E D E P O S I T S O F T H E S N A K E R I V E R G R O U PC r a t e r s o f t h e M o o n l a v a f i e l d

RADIOCARBON AGE(n.d., not determined)

(yr B.P.)

LAVA FLOWS C I N D E R C O N E S CONE NAME ERUPTIVE-FISSUREDEPOSITS

U N C O N S O L I D A T E D S U R F I C I A L D E P O S I T S

n.d.

2,076±45

2,205±25

n.d.

2,400±300

n.d.n.d.n.d.

n.d.

4,300±60

3,660±60

3,590±70

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

n.d.

4,510±100

6,020±160

6,600±60

6,500±60

7,360±60

10,240±120

7,470±80

7,840±140

10,670±150

11,000±100

12,010±150

15,100±160

Broken Top

Blue Dragon

Trench Mortar Flat

North Crater

Big Craters

Serrate (Qcfa8)Devils Orchard (Qcfa9)

Highway (Qcfa10)

Vermillion Chasm

Deadhorse

Devils Caldron

Minidoka

Larkspur Park

Rangefire

Black Top Butte

Indian Wells North

Indian Wells South

Sawtooth (Qcfc3)Big Cinder Butte NW (Qcfc4)

South Echo

Sheep Trail Butte

Fissure Butte

The Sentinel

Silent Cone

Carey Kipuka

Little Park

Little Laidlaw Park

Grassy

Laidlaw Lake

Lava Point

Pronghorn

Heifer Reservoir

Bottleneck Lake

Sunset (Qcfg1)Carey (Qcfg2)

Kimama

Bear Den Lake

Baseline

Little Prairie

No Name

Lost Kipuka

Crescent Butte

Brown

FLOW NAMES

A

B

C

D

E

F

G

H

n.d.

Qcfa1

Qcfa2

Qcfa3

Qcfa4

Qcfa5

Qcfa8 Qcfa9 Qcfa10

Qcfb1

Qcfb2

Qcfb3

Qcfb4

Qcfb5

Qcfb6

Qcfb7

Qcfc1

Qcfc2

Qcfc3 Qcfc4

Qcfc5

Qcfc6

Qcfc7

Qcfc8

Qcfd1

Qcfd2

Qcfd3

Qcfd4

Qcfe1

Qcfe2

Qcfe3

Qcff1

Qcff2

Qcff3

Qcfg1 Qcfg2

Qcfh1

Qcfh2

Qcfh3

Qcfh4

Qcfh5

Qcfh6

Qcfh7

Qcfh8

Qcca1

Qcca2

Qcca3

Qcca4 Qcca5

Qccb1

Qccc1

Qccc2

Qccc3

Qccc4

Qccd1

Qcc

Qcce1

Qccg1

Qcch1

Broken Top

Big Craters

The Watchman

North Crater

Black Top Butte

Big Cinder Butte

Sheep Trail Butte

Fissure Butte

The Sentinel

Silent

Grassy

Sunset

Qcea1

Qcea2

Qcea3

Qceb1

Qceb2

Qcec1

Qcec2

Qsbb5 Qsbb6 Qsbb7 Qsbb8 Qsbb9

Qsbb15 Qsbb16 Qsbb17

Qsbb18

Qsbb2 Qsbb3

Qsbb19 Qsbb20

Qsbb24

Qsbb25

Qsbb26 Qsbb27

Qsbb28

Qsbb10 Qsbb11

Qsbb12 Qsbb21

Qsbb1 Qsbb13 Qsbb22 Qsbb23

Qsbb14 Qsbb29 Qsbb30

Qsbb31 Qsbb32 Qsbb33 Qsbb34 Qsbb35 Qsbb36 Qsbb37

Qsbc1

Qsbc2 Qsbc5 Qsbc6 Qsbc7 Qsbc8 Qsbc9 Qsbc10 Qsbc11 Qsbc12 Qsbc13

Qsbc14 Qsbc15 Qsbc16 Qsbc17 Qsbc18 Qsbc27 Qsbc28

Qsbc19 Qsbc20 Qsbc29 Qsbc30 Qsbc32 Qsbc33 Qsbc34

Qsbc22 Qsbc23

Qsbc24 Qsbc25

Qsbc35

Qsbc52

Qsbc53

Qsbc54Qsbc36

Qsr1

Qsr2

Qsbc37 Qsbc38 Qsbc39

Qsbc55 Qsbc56 Qsbc57

Qsbc58 Qsbc59 Qsbc60

Qsbc40Qsbc41 Qsbc61 Qsbc62

Qsbc42 Qsbc43 Qsbc63

Qsbc44Qsbc45 Qsbc46 Qsbc47

Qsbc48Qsbc49 Qsbc50 Qsbc51

Qsbd3

Qsbd7

Qsbd1

Qsbd5 Qsbd6

Qsbd4

Qsbd2

Tsbf1

Tsbf2

Tg

TjTcd

Tcbg Tchd

Tcv

Tcc

Pww

P�weu

�wel

�wh

Unconformity

V O L C A N I C R O C K S

Unconformity

Unconformity

S E D I M E N TA R Y R O C K SHanging wall ofPioneer thrust

Sun ValleyGroup

Footwall ofPioneer thrust

Mca

Mcd

Mcl

Unconformity

Unconformity

Unconformity

?

IdavadaVolcanics

ChallisVolcanicGroup

Miocene

Oligocene

Eocene

LowerPermian

UpperPennsylvanian

UpperMississippian

LowerMississippian

Upper Devonian

Middle Devonian

Lower Devonian

Upper Silurian

Middle to LowerSilurian

MiddlePennsylvanian

TERTIARY

PERMIAN

PENNSYLVANIAN

MISSISSIPPIAN

DEVONIAN

SILURIAN

ORDOVICIAN

?

early middlePleistocene

early Pleistocene

Pliocene

Holocene

QUATERNARY

late middlePleistocene

Ql Qmf

Qta

Qls Qfac

QcQp

Qmp Qafy

Qt

Qafo

QTf

Qsbc3

Qsbc4 Qsbc21 Qsbc26 Qsbc31

Age relations amongunits unknown

Crescent Butte

Age relationsamong all unitsin eruptive periodH are unknown

<50 ka

55 ka

57 ka

58 ka

64 ka

75 ka

106 ka

113 ka

116 ka

120 ka

210 ka

263 ka

265 ka

290 ka

293 ka

306 ka

325 ka

340 ka

425 ka

433 ka

470 ka

480 ka

3.55 Ma

4.20 Ma

latePleistocene

40Ar/39Ar and K-Ar ages

Dp

Dj

Dc

DSrmDSs

St

SOp

?

?

Qsbb4

CopperBasinGroup

C O R R E L A T I O N O F M A P U N I T S

ERUPTIVEPERIOD

400 ka

B a s a l t i c l a v a f i e l d s e x c l u s i v e o f C r a t e r s o f t h e M o o n l a v a f i e l d[Units are organized chronologically here, whereas they are grouped geographically in Description of Map Units.

Black dots in boxes denote northwest, southwest, northeast, and southeast quadrants of map area where unit is located]

?

Tig Tiv

LIST OF MAP UNITS

UNCONSOLIDATED SURFICIAL DEPOSITS

Lacustrine deposits (Holocene)

Deposits of modern flood plains (Holocene)

Alluvium of tributary streams (Holocene and late Pleistocene)

Landslide deposits (Holocene to early middle Pleistocene)

Fan deposits of alluvium and colluvium (Holocene to early middle Pleistocene)

Playa deposits (Holocene to early Pleistocene)

Colluvium (Holocene to early Pleistocene)

Deposits along main streams of Pinedale age (late Pleistocene)

Younger fan alluvium (late Pleistocene)

Travertine (Pleistocene)

Older fan alluvium (late middle Pleistocene to early Pleistocene(?))

Older fan gravel (Pleistocene and Pliocene)

HOLOCENE AND LATE PLEISTOCENE BASALTIC LAVA FLOWS AND RELATED CINDER CONE AND ERUPTIVE-FISSURE DEPOSITS OF THE SNAKE RIVER GROUP

Craters of the Moon lava field

Eruptive-period A

Broken Top pahoehoe basalt flow (Holocene)

Broken Top basaltic cinder cone deposits (Holocene)

Blue Dragon pahoehoe and a'a basalt-hawaiite flows (Holocene)

Big Craters basaltic cinder cone deposits (Holocene)

Blue Dragon basaltic eruptive-fissure deposits (Holocene)

Trench Mortar Flat pahoehoe and slab-pahoehoe basalt-hawaiite flows and near-vent tephra deposits (Holocene)

The Watchman cinder cone deposits (Holocene)

Trench Mortar Flat basaltic eruptive-fissure deposits (Holocene)

North Crater pahoehoe basalt-hawaiite flow (Holocene)

North Crater basaltic cinder cone deposits (Holocene)

Big Craters pahoehoe and slab-pahoehoe hawaiite flows (Holocene)

Big Craters basaltic eruptive-fissure deposits (Holocene)

Serrate block and a'a latite flow (Holocene)

Devils Orchard block and a'a latite flow (Holocene)

Highway block, a'a, and pahoehoe latite flow (Holocene)

Cinder mound deposits (Holocene)

Eruptive-period B

Vermillion Chasm pahoehoe basalt flows and near-vent tephra deposits (Holocene)

Vermillion Chasm basaltic eruptive-fissure deposits (Holocene)

Deadhorse pahoehoe basalt flows (Holocene)

Deadhorse basaltic eruptive-fissure deposits (Holocene)

Devils Caldron pahoehoe basalt-hawaiite flow (Holocene)

Minidoka pahoehoe basalt flows (Holocene)

Larkspur Park pahoehoe hawaiite flows (Holocene)

Rangefire pahoehoe hawaiite-latite flows (Holocene)

Black Top Butte pahoehoe hawaiite flow (Holocene)

Black Top Butte basaltic cinder cone deposits (Holocene)

Eruptive-period C

Indian Wells North a'a latite flow (Holocene)

Indian Wells South a'a latite flow (Holocene)

Sawtooth a'a latite flows (Holocene)

Big Cinder Butte NW a'a latite flow (Holocene)

Big Cinder Butte basaltic cinder cone deposits (Holocene)

South Echo pahoehoe basalt flow (Holocene)

South Echo basaltic eruptive-fissure deposits (Holocene)

Sheep Trail Butte pahoehoe and a'a basalt flows (Holocene)

Sheep Trail Butte basaltic cinder cone deposits (Holocene)

Fissure Butte pahoehoe and a'a basalt flows (Holocene)

Fissure Butte basaltic cinder cone deposits (Holocene)

Fissure Butte basaltic eruptive-fissure deposits (Holocene)

The Sentinel pahoehoe and a'a basalt flow (Holocene)

The Sentinel basaltic cinder cone deposits (Holocene)

Eruptive-period D

Silent Cone latite a'a flow (Holocene)

Silent Cone basaltic cinder cone deposits (Holocene)

Carey Kipuka hawaiite a'a flow (Holocene)

Little Park hawaiite a'a flows (Holocene)

Little Laidlaw Park hawaiite a'a flow (Holocene)

Eruptive-period E

Grassy pahoehoe and collapse-a'a basalt flow (Holocene)

Grassy Cone basaltic cinder cone deposits (Holocene to latest Pleistocene)

Laidlaw Lake pahoehoe and a'a basalt flows (Holocene)

Lava Point a'a basalt flows (Holocene)

Eruptive-period F

Pronghorn pahoehoe and a'a basalt flows (late Pleistocene)

Heifer Reservoir pahoehoe basalt flows (late Pleistocene)

Bottleneck Lake pahoehoe and a'a basalt flows (late Pleistocene)

Eruptive-period G

Sunset pahoehoe and slab-pahoehoe basalt-hawaiite flows (late Pleistocene)

Carey pahoehoe and slab-pahoehoe basalt-hawaiite flows (late Pleistocene)

Sunset Cone basaltic cinder cone deposits (late Pleistocene)

Eruptive-period H

Kimama pahoehoe basalt flow (late Pleistocene)

Bear Den Lake pahoehoe basalt flows (late Pleistocene)

Baseline pahoehoe basalt flows (late Pleistocene)

Little Prairie pahoehoe and a'a basalt flows (late Pleistocene)

No Name pahoehoe basalt flow (late Pleistocene)

Lost Kipuka pahoehoe basalt flow (late Pleistocene)

Crescent Butte pahoehoe basalt flow (late Pleistocene)

Crescent Butte basaltic cinder cone deposits (late Pleistocene)

Brown pahoehoe basalt flow (late Pleistocene)

Basaltic cinder cones, undivided (Holocene and late Pleistocene)

PRE-HOLOCENE BASALTIC LAVA FIELDS AND ASSOCIATED FLOWS, VENTS, AND ERUPTIVE-FISSURE DEPOSITS OF THE SNAKE RIVER GROUP

[Units are grouped geographically here, whereas they are organized chronologically in Correlation of Map Units]

Basaltic lava fields of northwestern part of map area

Paddelford Flat, Carey, and Little Wood River areas

Basaltic pahoehoe flows and pyroclastic deposits of Vent 4895 lava field (late Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Paddelford Flat lava field (late middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Vent 5074 lava field (late middle Pleistocene)

Basaltic pahoehoe flows (late middle Pleistocene)

Basaltic pahoehoe flows of Campbell Reservoir–South Fork Muldoon Creek area (early middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Fish Creek Reservoir (inferred to be early middle Pleistocene)

Basaltic pahoehoe flows of upper Little Wood River and South Fork Muldoon Creek areas (early Pliocene)

Basaltic pahoehoe flows of lower Little Wood River area (early Pliocene)

Little Park area

Basaltic pahoehoe flows and pyroclastic deposits of Little Park lava field (late middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Vent 5129 lava field (late middle Pleistocene)

Laidlaw Park and Little Laidlaw Park areas

Basaltic pahoehoe flows and pyroclastic deposits of Hollow Top lava field (late middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Turnbull Butte lava field (late middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Big Blowout Butte lava field (late middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Vent 5237 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Bullshot Reservoir lava field (late middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Blowout Reservoir lava field (late middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Bowl Crater lava field (late middle Pleistocene)

Pyroclastic deposits of North Laidlaw Butte cinder cone complex (inferred to be late middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Potter Butte lava field (late middle Pleistocene)

Pyroclastic deposits of Vent 5370 (late middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Vent 5136 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Ant Butte lava field (late middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Corral Butte lava field (late middle Pleistocene)

Carey Kipuka cinder cone deposits (late middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits (Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Laidlaw Butte lava field (early middle Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Snowdrift Crater lava field (early middle Pleistocene)

Basaltic lava fields of southwestern part of map area

Basaltic pahoehoe flows and pyroclastic deposits of Bear Den Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Vent 5168 lava field (late Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Lava Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Broken Top Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Sand Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Spud Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of west Wildhorse Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Monument Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of The Blowout lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 4792 lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits near spot elevation 4673 ft (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Wagon Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Black Ridge Crater lava field (late Pleistocene)

Basaltic pahoehoe flows and pyroclastic deposits of Vent 4708 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 4645 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 4550 lava field (late middle Pleistocene)

Near-vent pyroclastic deposits and minor basaltic pahoehoe flows of Vent 4430 lava field (late middle Pleistocene)

Minor basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 4626 lava field (late middle Pleistocene)

Basaltic pahoehoe flows (late middle Pleistocene)

Basaltic lava fields of northeastern part of map area

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Rock Corral Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5438 lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5494 lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Fingers Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Quaking Aspen Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Coyote Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5159 lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Serviceberry Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5206 lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5328 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5359 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5119 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5244 lava field (late middle Pleistocene)

Basaltic pahoehoe flows (late middle Pleistocene)

Near-vent pyroclastic deposits and pahoehoe basalt flows of Vent 5149 and Rattlesnake Butte eruptive fissures (late middle Pleistocene)

Near-vent pyroclastic deposits and pahoehoe basalt flows of Saddle Butte lava field (late middle Pleistocene)

Near-vent pyroclastic deposits and pahoehoe basalt flows of Cruthers Butte lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Pratt Butte lava field (late middle Pleistocene)

Near-vent pyroclastic deposits of China Cup cinder cone (late middle Pleistocene)

Massive, aphyric, white rhyolite of Big Southern Butte (late middle Pleistocene)

Devitrified, flow-banded rhyolite flows, and sugary-textured rhyolite of Big Southern Butte (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5571 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of east Wildhorse Butte lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Huddles Hole lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of southeast Wildhorse Butte lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5549 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5575 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5609 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5337 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Tin Cup Butte lava field (late middle Pleistocene)

Basaltic pahoehoe flows of Sixmile Butte lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Teakettle Butte lava field (late middle Pleistocene)

Basaltic pahoehoe flows (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5128 lava field (late middle Pleistocene)

Near-vent pyroclastic deposits and shelly-pahoehoe basalt flows of Shadow cinder cone (late middle Pleistocene)

Near-vent pyroclastic deposits and shelly-pahoehoe basalt flows of Vent 5265 cinder cone (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Antelope Butte lava field (early middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5221 lava field (early middle Pleistocene)

Basaltic lava flows on north face of Big Southern Butte (late middle and early middle Pleistocene)

Basaltic lava fields of southeastern part of map area

Basaltic pahoehoe flows of Vent 5108 lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Horse Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 4946 lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Mule Butte lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Split Top lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5317 lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5252 lava field (late Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 4902 lava field (late middle Pleistocene)

Basaltic pahoehoe flows (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 4892 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5329 lava field (late middle Pleistocene)

Basaltic pahoehoe flows (late middle Pleistocene)

Near-vent pyroclastic deposits and basaltic pahoehoe flows (Pleistocene)

Basaltic pahoehoe flows (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Mosby Butte lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5083 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Rock Lake lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5179 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Gasten Beattie lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5365 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Mosby Well lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Streifling lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5358 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5374 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Vent 5183 lava field (late middle Pleistocene)

Basaltic pahoehoe flows and near-vent pyroclastic deposits of Packsaddle Butte lava field (late middle Pleistocene)

VOLCANIC ROCKS ALONG NORTHWEST MARGIN OF EASTERN SNAKE RIVER PLAIN

Idavada Volcanics (Miocene)

Gravel (Miocene)

Jasperoid (Oligocene? and Eocene?)

Gossan (pre-Miocene and post-Permian)

Challis Volcanic Group (Eocene)

Rhyolite, leucogranite, and granite pegmatite and aplite dikes

Biotite granite of Cottonwood Creek

Hornblende diorite of Little Cottonwood Creek

Dacitic and andesitic volcanic rocks

Basal conglomerate

SEDIMENTARY ROCKSSun Valley Group

Wood River Formation (Lower Permian to Middle Pennsylvanian)

Wilson Creek Member (Lower Permian)

Eagle Creek Member (Lower Permian to Middle Pennsylvanian)

Upper part (Lower Permian to Upper Pennsylvanian)

Lower part (Upper to Middle Pennsylvanian)

Hailey Member (Middle Pennsylvanian)

Copper Basin Group (Mississippian)

Argosy Creek Formation (Upper and Lower Mississippian)

Drummond Mine Limestone (Lower Mississippian)

Little Copper Formation (Lower Mississippian)

Picabo Formation (Upper Devonian)

Jefferson Formation (Upper and Middle Devonian)

Carey Dolomite (Middle to Lower Devonian)

Roberts Mountains Formation (Lower Devonian and Upper Silurian)

Siltstone (Devonian? and Silurian)

Trail Creek Formation (Middle to Lower Silurian)

Phi Kappa Formation (Middle Silurian to Lower Ordovician)

Contact—Dashed where approximately located

Flow line—Linear flow features and lava tubes; arrows show flow direction. Circular openings on flow lines are skylights in lava tubes

Lava channel—Arrow shows direction of flow within lava channel

Narrow—Channels <10 m wide

Wide—Channels >10 m wide

Crater—Outline of crater rim on volcanic vent. Barbs point toward central depression; barbs not shown on smaller craters

Small cone—Small lava cone, cinder cone, or spatter cone

Rootless vent—Secondary source of lava not directly related to conduit to deep magma reservoir. Most are openings in lava tubes

Covered vent—Small vent that is remnant of larger vent now covered by flow that ponded in a central vent depression

Lava pond—Basalt-filled depression surrounded by levees that are shown by hachured line. Ticks point toward lava pond

Non-eruptive fissure—Fractures in rock through which lava has not erupted. Width generally <1 m

Eruptive fissure—Fractures in rock through which lava has erupted. Width 1–2 m. Some eruptive fissures in Craters of the Moon lava field (Qcea1–3, Qceb1–2, Qcec1–2) are mapped as specific units because they were studied in some detail. Other eruptive fissures, such as those in pre-Holocene, mostly loess-covered lava fields, are mapped as general features

Normal and (or) oblique-slip fault—Dashed where approximately located; dotted where concealed. Bar and ball on downthrown side where relative motion known. Arrows indicate relative lateral movement

Thrust fault of Antler age (post-Devonian to pre-Middle Pennsylvanian)—Dotted where concealed. Solid teeth on upper plate

Thrust fault of Mesozoic age—Dotted where concealed. Open teeth on upper plate. Probably has later normal movement down to west

Anticline—Dashed where approximately located

Overturned anticline

Syncline—Dashed where approximately located; dotted where concealed

Strike and dip of beds in sedimentary rocks and volcanic tuffs

Inclined

Vertical

Horizontal

Strike and dip of eutaxitic structures in welded ash-flow tuffs

Inclined

Vertical

Fossil locality

Radiocarbon dating sample locality—Charcoal- or carbon-bearing sediment. Showing laboratory number and age in 14C yr B.P. See table 1

40Ar/39Ar age determination sample locality—Showing field number and age. See table 2

K-Ar age determination sample locality—Showing field number and age. See table 2

Paleomagnetic data sample locality—Showing site number and remanent inclination and declination. See table 3

Boundary of the Craters of the Moon National Monument (COMNM)

35

70

F-2

92KS534±29 ka

10,240±120W-4586

BnLI64.3, 341.9

SRP-102<50 ka

Qcea1

Ql

Qmf

Qta

Qls

Qfac

Qp

Qc

Qmp

Qafy

Qt

Qafo

QTf

Qcfa1

Qcca1

Qcfa2

Qcca2

Qcea1

Qcfa3

Qcca3

Qcea2

Qcfa4

Qcca4

Qcfa5

Qcea3

Qcfa8

Qcfa9

Qcfa10

Qcca5

Qcfb1

Qceb1

Qcfb2

Qceb2

Qcfb3

Qcfb4

Qcfb5

Qcfb6

Qcfb7

Qccb1

Qcfc1

Qcfc2

Qcfc3

Qcfc4

Qccc1

Qcfc5

Qcec1

Qcfc6

Qccc2

Qcfc7

Qccc3

Qcec2

Qcfc8

Qccc4

Qcfd1

Qccd1

Qcfd2

Qcfd3

Qcfd4

Qcfe1

Qcce1

Qcfe2

Qcfe3

Qcff1

Qcff2

Qcff3

Qcfg1

Qcfg2

Qccg1

Qcfh1

Qcfh2

Qcfh3

Qcfh4

Qcfh5

Qcfh6

Qcfh7

Qcch1

Qcfh8

Qcc

Qsbb1

Qsbc1

Qsbc2

Qsbc3

Qsbd1

Qsbd2

Tsbf1

Tsbf2

Qsbc4

Qsbc5

Qsbc6

Qsbc7

Qsbc8

Qsbc9

Qsbc10

Qsbc11

Qsbc12

Qsbc13

Qsbc14

Qsbc15

Qsbc16

Qsbc17

Qsbc18

Qsbc19

Qsbc21

Qsbd3

Qsbd4

Qsbb2

Qsbb3

Qsbb4

Qsbb5

Qsbb6

Qsbb7

Qsbb8

Qsbb9

Qsbb10

Qsbb11

Qsbb12

Qsbb13

Qsbb14

Qsbc20

Qsbc22

Qsbc23

Qsbc24

Qsbc25

Qsbc26

Qsbb15

Qsbb16

Qsbb17

Qsbb18

Qsbb19

Qsbb20

Qsbb21

Qsbb22

Qsbb23

Qsbc27

Qsbc28

Qsbc29

Qsbc30

Qsbc31

Qsbc32

Qsbc33

Qsbc34

Qsbc35

Qsbc36

Qsr1

Qsr2

Qsbc37

Qsbc38

Qsbc39

Qsbc40

Qsbc41

Qsbc42

Qsbc43

Qsbc44

Qsbc45

Qsbc46

Qsbc47

Qsbc48

Qsbc49

Qsbc50

Qsbc51

Qsbd5

Qsbd6

Qsbd7

Qsbb24

Qsbb25

Qsbb26

Qsbb27

Qsbb28

Qsbb29

Qsbb30

Qsbb31

Qsbb32

Qsbb33

Qsbb34

Qsbb35

Qsbb36

Qsbb37

Qsbc52

Qsbc53

Qsbc54

Qsbc55

Qsbc56

Qsbc57

Qsbc58

Qsbc59

Qsbc60

Qsbc61

Qsbc62

Qsbc63

Tiv

Tig

Tj

Tg

Tcd

Tcbg

Tchd

Tcv

Tcc

Pww

P�weu

�wel

�wh

Mca

Mcd

Mcl

Dp

Dj

Dc

DSrm

DSs

St

SOp

43°30'114°00' 113°00'

43°00'

10 8

9

11

3

5 6

41

7

2 2

INDEX TO SOURCES OF GEOLOGIC MAPPING

SOURCES OF GEOLOGIC MAPPING 1. Champion and others (1989) 7. Kuntz, Skipp, and 11 others (1992) 2. Kuntz, M.A., unpublished mapping, 8. Larson (1974) 1977, 1992, 2002. 9. Sidle (1979) 3. Kuntz and others (1988) 10. Skipp, Betty, unpublished mapping, 4. Kuntz and others (1990) 1975, 1977, 1979, 1991–1994. 5. Kuntz and others (1989a) 11. Skipp and Hall (1975) 6. Kuntz and others (1989b)

OR

EG

ON

WESTERN SNAKE RIVER PLAIN

WAPI LAVAFIELD

MONTANA

CRATERS OF THE MOONLAVA FIELD

EASTERNSNAKE RIVER

PLAIN

STUDYAREA

IDAHO

WY

OM

ING

GREAT RIFTKINGS BOWL

LAVA FIELD

0 100 200 KILOMETERS

0 50 100 MILES

117° 116° 115° 114° 113° 112° 111°45°

44°

43°

42°

INDEX MAP SHOWING LOCATION OF STUDY AREA

NEVADA UTAH

CRATERS OF THE MOONNATIONAL MONUMENT

Base from U.S. Geological Survey, 1978.Projection and 10,000-m grid, zone 12, Universal Transverse Mercator.50,000-ft grid ticks based on Idaho coordinate system, central and east zones.1927 North American Datum

Sources of geologic mapping shown on Index.Manuscript approved for publication April 18, 2007

U.S. DEPARTMENT OF THE INTERIORU.S. GEOLOGICAL SURVEY

SCIENTIFIC INVESTIGATIONS MAP 2969Pamphlet accompanies map

Any use of trade names is for descriptive purposes only and does not imply endorsement by the U.S. Government

For sale by U.S. Geological Survey Information ServicesBox 25286, Federal Center, Denver, CO 802251-888-ASK-USGS

ArcInfo coverages and a PDF for this map are available at http://pubs.usgs.govPrinted on recycled paper

GEOLOGIC MAP OF THE CRATERS OF THE MOON 30' X 60' QUADRANGLE, IDAHOBy

Mel A. Kuntz1, Betty Skipp1, Duane E. Champion1, Philip B. Gans2, D. Paco Van Sistine1, and Scott R. Snyders1

2007

1U.S. Geological Survey2Department of Geological Sciences, University of California, Santa Barbara, Calif.

CONTOUR INTERVAL 20 AND 50 METERS

NATIONAL GEODETIC VERTICAL DATUM OF 1929

1 10 KILOMETERS0 1 2 43 5 6 7 8 9

SCALE 1:100 0001 8 MILES10 2 3 4 5 6 7

APPROXIMATE MEANDECLINATION, 1978

MA

GN

ET

IC

NO

RT

H

17°

TR

UE

N

OR

TH

QUADRANGLE LOCATION

IDAHO

Prepared in cooperation with theNATIONAL PARK SERVICE and the U.S. BUREAU OF LAND MANAGEMENT

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