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:1000-8527(2011)04-0682-10
TheMashanIndosinianOceanicIslandBasaltOutcroppingalongtheLingshanFractureinSoutheastGuangxiandItsTectonicImplications
WUGenyao,LIYuejun(InstituteofGeologyandGeophysics,ChineseAcademyofSciences,Beijing 100029,China)
Abstract:TheMashanIndosinianbasaltoutcroppedalongtheLingshanfractureinsoutheastGuangxiThediscriminantdiagramsofmajorelementsshowedthetectonicsettingofthealkalibasaltbeingoceanicislandThetraceelementcontentsindicatedthecharacteristicsofoceanicwithinplatebasaltTheREEpatternsoftheMashanIndosinianbasaltwereagroupofsubparalledandgentlyrightinclinedcurves,with(La/Yb)N=1169,(Ce/Yb)N=864,(Ce/Sm)N=241,andatendencyoftotalREEcontentsincreasedwithincreasingofthetotalalkalicontents,whichcomprehendedtheMashanoceanicislandshouldbelongtotheAzorestypeoneThisprovided,firstly,anevidenceofgeologicalrecordsfromtheoceanicbasinforthattheareaofsoutheastGuangxiandneighbouringsouthwestGuangdongshouldbeapartofthePaleotethysides,andtheLingshanfractureshouldbeasutureresultedfromclosureofthePaleotethyanbranchoceanicbasinFurthermore,thepaperrepresentedaworkmodelforevolutionoftheLingshanoceanicbasinbasedontherecentfruitsofthePaleotethyanstudyintheborderareasofGuangxiandGuangdongKeywords:Azorestypeoceanicisland;Indosinianbasalt;petrochemistry;Paleotethysides;Lingshanfracture;southeastGuangxi
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Fig1 AsimplifiedgeologicalmapshowingYanshaniangraniticcomplexandIndosinianbasaltinMashan,southeastGuangxi1
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Table1 ChemicalanalysesoftheMashanIndosinianbasaltfromsoutheastGuangxi(%)
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2803 4961 124 1253 743 299 016 914 743 435 160 054 249 9951
2804 4713 156 1218 646 564 022 1032 720 307 223 053 328 9982
2805 4920 128 1285 729 371 017 936 723 393 175 057 255 9989
2806 4844 163 1201 754 399 023 1061 758 304 217 053 230 10007
2809 4795 205 1475 564 702 021 728 493 335 312 063 296 9989
2810 4943 182 1503 261 935 018 761 369 292 429 057 252 10002
2812 5096 183 1488 390 771 013 619 329 496 306 059 230 9980
2813 5095 186 1508 672 502 019 723 416 389 193 052 213 9968
2814 5570 127 1745 381 407 010 336 234 432 532 037 185 9996
2816 5085 187 1510 664 537 019 704 400 439 170 054 217 9986
2817 4652 204 1319 430 852 021 999 674 333 208 062 218 9972
2818 4602 203 1326 631 611 020 1037 629 312 253 064 293 9981
2821 4936 126 1269 745 286 019 971 733 397 168 055 266 9971
2822 4995 129 1276 692 313 019 899 725 429 171 058 263 9969
2833 5309 143 1366 651 375 016 600 524 007 478 053 473 9995
2835 4635 196 1370 679 551 023 986 615 196 198 059 452 9960
2837 5079 155 1453 702 332 021 748 525 377 268 059 254 9973
2824 4583 211 1420 553 638 022 892 694 250 266 070 392 9991
2825 4761 201 1454 514 655 019 895 487 211 379 070 331 9977
2826 5145 168 1480 674 399 018 647 407 481 285 065 220 9989
2828 5016 167 1491 676 425 016 677 479 520 179 065 277 9988
2829 4990 160 1395 623 424 020 902 586 382 212 061 229 9984
2830 4938 155 1350 613 417 019 814 669 445 194 058 291 9963
2831 4913 157 1340 661 445 018 896 633 402 199 059 266 9989
2832 4978 158 1354 692 392 016 811 621 483 175 060 228 9968
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Table2 TraceelementcontentsoftheMashanIndosinianbasaltfromsoutheastGuangxi(10-6)
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Li Be Sc V Cr Co Ni Cu Zn Ga Rb
2803 1869 267 4118 27684 16120 3944 6455 13735 7969 1657 14639
2806 2141 202 3947 30465 17182 4755 6789 9863 9253 1798 9890
2809 1900 259 2978 34545 3607 3977 2422 6234 15533 2084 8912
2812 652 319 2232 30772 747 3260 579 1504 10253 1893 14129
2818 2064 228 3762 42169 6034 4762 4499 14809 10060 1928 16245
2824 2046 222 3148 36141 8242 4089 3950 23085 10653 2141 10336
2825 2256 257 2462 30916 6932 3781 3607 9899 9357 2090 9967
2832 1741 247 3318 29043 15632 4011 5025 9590 8742 2007 17892
2835 5081 216 3407 34851 5247 4338 3903 12159 9799 2024 6437
2837 1683 241 3425 30844 4553 3808 3282 8542 12127 2042 13182
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Sr Y Zr Nb Ba Hf Ta Pb Cs Th U
2803 45285 2553 16123 2009 100970 430 129 402 130 624 190
2806 64087 2550 18229 3587 92560 485 230 560 167 774 201
2809 66664 3630 22377 4611 93826 587 296 732 064 915 209
2812 55978 3671 25702 4359 93474 657 282 962 061 1015 301
2818 81223 2881 21371 5172 103231 571 334 830 3001 830 197
2824 67691 2764 23096 5111 68453 610 334 644 101 892 250
2825 85021 2743 23581 5472 65954 596 356 738 1137 936 266
2832 86236 2759 21208 3733 135109 562 246 1087 160 928 237
2835 68844 2809 20125 4223 124412 544 274 1399 310 790 212
2837 82453 2710 20007 3278 139865 541 213 766 122 858 213
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Table3 RareearthelementcontentsoftheMashanIndosinianbasaltfromsoutheastGuangxi(10-6)
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Yb)N
(Ce/
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2803 29155662 760 3011 666 183 595 091 521 100 269 039 248 038 15098 776 583 201
2806 40607775 979 3704 753 217 663 098 524 102 262 037 233 035 194421150 854 244
2809 567098581297 4908 987 266 820 124 694 133 344 047 296 045 254891265 853 236
2812 524398391251 4744 971 254 821 123 695 137 356 049 311 047 248411113 809 240
2818 524499771235 4621 932 259 802 112 598 116 294 040 255 038 2452313581001 253
2824 5351102321269 4775 951 253 750 111 581 115 295 041 257 038 2501913751019 254
2825 5625106181308 4793 947 254 745 109 602 113 290 041 257 038 2806014451057 265
2832 454785971073 4048 845 234 695 105 591 112 283 040 256 038 214641069 859 241
2835 470991451131 4316 889 251 767 110 615 116 300 042 268 040 226991160 873 243
2837 39487610 961 3604 776 214 634 101 570 111 291 042 267 040 19169 977 729 232
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:
[1] °îßà²n$()¸ðd
.°îßà²n$$%()À
[M].12
:()E¥¦
,1985:1-853.
[2] MiyashiroA.Natureofalkalicvolcanicseries[J].Contributions
toMineralogyandPetrology,1978,66:91-104.
[3] SaggersonEP,WilliamsLAJ.Ngurumaniterocksinthenorth
ernKenyaanditsbearingontheoriginofrocksinnorthernTan
ganyikaalkalinedistrict[J].JournalofPetrology,1964,5:
40-81.
[4] MullenED.MnO/TiO2/P2O5:aminorelementdiscriminantfor
oceanicenvironmentsanditsimplicationforpetrogenesis[J]
EarthandPlanetaryScienceLetters,1983,65:53-62.
[5] GlasseyW.GeochemistryandtectonicsoftheGressentvolcanic
rocks,OlympiaPeninsula[J].GeologicalSocietyofAmerican
Bulletin,1974,85:785-794.
[6] KrnerA,PuustinenK,HickmanM.GeochronologyofanAr
chaeantonalitegneissdomeinnorthernFinlandanditskomatitic
greenstone[J].ContributionstoMineralogyandPetrology,
1981,76:33-41.
[7] MeschedeM.Amethodofdiscriminatingbetweendifferenttypes
ofmidoceanridgebasaltsandcontinentaltholeiiteswiththeNb-
Zr-Ydiagram[J].ChemicalGeology,1986,56:207-218.
[8] WoodDA.TheapplicationofaTh-Hf-Tadiagramtoprob
lemsoftectonomagmaticclassificationtoestablishingthenatureof
crustalcontaminationofbasalticlavasoftheBritishTertiaryVol
canicProvince[J].EarthandPlanetaryScienceLetters,1980,
50:11-30.
[9] SunSS,McDonughWF.Chemicalandisotopicsystematicsof
oceanicbasalts:implicationsformantlecompositionandprocess
[M]//SaundersAD,NorryMJ.MagmatismintheOceanBa
sins.London:GeologicalSocietyofLondon,SpecialPublication.
1989,42:313-345.
[10] McDonughW F,McCullochMT,SunSS.Isotopicandgeo
chemicalsystematicsinTertiaryrecentbasaltsfromsouthernAus
traliaandimplicationfortheevolutionofthesubcontinentallitho
sphere[J].GeochimicaetCosmochimicaActa,1985,49:
2051-2067.
[11] PearceJA.Geochemicalevidenceforthegenesisanderuptive
settingoflavasfromTethyanophiolite[M]//PanayioutouA.
Ophiolite.ProceedingsoftheInternationalOphioliteSymposium,
Cyprus.1980:261-272.
[12] LangmuirCH,BendeJE,BanceAE,etal.Petrogenesisofba
saltsfromthefamousareas:MidAtlanticridge[J].Earthand
PlanetaryScienceLetters,1977,36(1):133-156.
[13] ZielinskiRA.Traceelementevaluationofasuiteofrocksfrom
ReunionIsland,IndianOcean[J].GeochimicaetCosmochimi
caActa,1975,39:713-734.
[14] ZielinskiRA,FreyFA.GoughIsland:evaluationofafractional
crystallizationmodel[J].ContributionstoMineralogyandPe
trology,1970,29:242-254.
[15] WhiteWM,TapiaMDM,SchillingJG.Thepetrologyandgeo
chemistryoftheAzoresIslands[J].ContributionstoMineralogy
andPetrology,1979,69:201-213.
[16] SaundersAD.Therareearthelementcharacteristicsofigneous
rocksfromtheoceanbasins[M]//HendersonP.RareEarth
ElementGeochemistry.Amsterdam:Elsevier,1984:205-236.
[17] ��
,:�Ü
,g�ÿ
,ì
.*++¬,([\os�G
O()
[M].12
:()E¥¦
,2004:41,123-125,
207-212.
[18] £/0
,h+i
,úàÂ
,ì
.áKkÊP(
———Ñ^áK
ðrs?S�j¾
[J].°î()
,1993,16(3):12-18.
[19] ÊlÇ
,£m
,�Ój
.�/(�-.Yk�*S$@s=
¾õSTU
[M]//�xl
,:�Ü
.�/,IV�#$(
)[\�ÿ÷
.12
:()E¥¦
,1993:53-59.
[20] °!K()¸ðd
.°!K$%()À
[M].12
:()
E¥¦
,1988:1-783.
[21] �xl
,m�n
.£°�/,I
—þm,I($PIØ|[
\�Ð
———U�J+ÂÃ$%��
[J].()¦(
,2006,
25(3):340-347.
[22] :�Ü
,ñ0p
.°îþm,IP(!+ÖS¶·
-öÛ[
\
[M]//�xl
,:�Ü
.�/,IV�#$()[\�
ÿ÷
.12
:()E¥¦
,1993:66-77.
[23] ×±â
,op$
.Þîi§�öÛ[\�sF½ÍQ�¼S
;&
[J].4-¦(
,1992,37(2):157-160.
[24] ×±â
,×sÍ
,â«J
,ì
.£°¿¬ÉñògÚ[ªó
wÛ¡sV�r¾°�¼)S��
[J].+2,--(
,
2003,30(1):46-52.
[25] úàÂ
,h+i
,qÍó
,ì
.Ù+srB'½xG4|V
°îr¾°�S[h.�
[J].4-¦(
,1994,39(7):
809-819.
[26] úàÂ
.½xG%)s]J+r(éS �
[J].r(é-
096&
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(
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2011$
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,1999,2(2):28-33.
[27] �xl
.�/,ÊV�#$[\�Ð
[M].//�xl
,:
�Ü
.�/,IV�#$()[\�ÿ÷
.12
:()E¥
¦
,1993:1-11.
[28] ×Aï
.°îþm,IkÊP(·aöÛ[\
[J].&'(
)
,1999,13(2):150-155.
[29] 2R9
,2ab
,rY+
.�/(�X«aE�S()¾õ
5[\�Ð
[J].°!()
,1995,10(2):9-16.
[30] ×±â
,Fsâ
, û�
,ì
.r¾°�\I�jJ+£°
($S�^¢
[J].()�?
,1995,41(1):1-6.
[31] �ÿt
.J+Ê%&r¾°�Åe
、gÚ[\IX�oçZ
[\%S!$
[J].()4-
,1996,31(2):105-113.
[32] �Êt
,£¿J
,:Àt
.°îáK:ês)P>%)s(
3Ð-¾õV:;¼½.�
[J].()4-
,2003,38
(4):460-469.
[33] WuGenyao.Laochangvolcanics:arecordofAzorestypeoceanic
islandinPaleotethys,southwestYunnan[J].ScientiaGeologica
Sinica,1994,3(1):13-23.
[34] ú¡P
,Zöu
,vK¯
,ì
.Ù!+MÜ�wè4LIs
ÅmS,([\¼½
[J].&'()
,2000,14(1):21
-28.
[35] ú¡P
.Ù!MÜ($r¾°�JÍP*SÄùéwͪÛ
¡s
[J].()¦(
,2006,25(7):772-781.
[36] ú¡P
,úàÂ
,x,y
,ì
.9Ù¿¬Ér¾°�Sͪ
oªóLIs
[J].&'()
,2000,14(4):393-400.
[37] ú¡P
,��
,x,y
,ì
.9Ù¿¬$s=#NBów\
I�
:U�5\IX�Ø|SP(;*
[J].FGL¬(
)
,2001,23(1):8-18.
[38] ú¡P
.JDso\I�TU*SÂÃ,¢
[M]//×w
.
JDso(3�-TU
.12
:()E¥¦
,1996:25
-28.
[39] £/0
,�ÿ�
,ú¡P
,ì
.�X/P(*'ÚHSr¨
#töôMsoôMs
[J].*+4-
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,2005,35
(2):97-104.
[40] ú¡P
,£/0
,Z+�
,ì
.�Üî'Òa($r¨#S
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[J].&'()
,2006,20(3):361-369.
[41] s�
,£/0
,�ö�
,ì
.�X/P({|�c[\�
aE[\QR
[J].()4-
,2007,42(3):506-517.
[42] WuGenyao.Maintectonicunitsandgeologicalevolutioninsouth
Chinaanditsenvirons:inthelightofGondwanadispersionand
Asianaccretion[M]//MetcalfeI.GondwanaDispersionand
AsianAccretion.Rotterdam:AABalkema,1999:315-340.
[43] 2ab
,³«f
,ÌY�
,ì
.£°�/é�$}¼|js
S(3Ð-¾õV�[\i8
[J].()¦(
,2006,25
(4):434-441.
[44] d�
,VÒ
,X}B
,ì
.°î�/($xr'®Ô|M
²S��V�[\i8
[J].&'()
,2007,21(1):22
-30.
[45] d�
,X}B
,U~ß
,ì
.�/(�1Ö
MORBwLI
sS´�;&V�,([\i8
[J].()4�u(
,
2005,24(3):20-24.
[46] d�
,Wx�
,££
,ì
.Ù!+�/($Y)Xs>F
SHRIMPUPb$'-
[J].()¦(
,2006,25(5):553
-559.
[47] x,y
,ì
.êî'r¾°�\I�
[M].12
:4-E
¥¦
,1998:1-231.
[48] WuGenyao,ZhongDalai,ZhangQi,etal.BabuPhuNguophio
lites:AgeologicalrecordofPaleotethyanoceanborderingChina
andVietnam[J].GondwanaResearch,1999,2(4):554-557.
196 !4# ú¡Pì
:Ù!+�IËÚIaEE"Ss=#ͪۡsV�$%[\i8