Geochronology and Petrochemistry of Volcanic Rocks in the Xaignabouli Area, NW Laos-中国期刊网

摘要 AnintegratedstudyofzirconU-Pbgeochronologyandpetrochemistry,togetherwithzirconLu-Hfisotopes,hasbeencarriedoutonthebasaltic-andesitictuffandvolcanicbrecciafromtheNamHangFormationandandesitictufffromtheMuang-NanFormationintheXaignabouliarea,whichhadbeenmappedasthePermian–EarlyTriassiconthe1:1000000geologicalmaporLateCarboniferousonthe1:200000geologicalmaps.ZirconU-Pbdatingofthreesamplesyieldedweightedmeanagesof235±2.6,232±1.4and278±2.8Ma,respectively,suggestingaLateTriassicoriginfortheNamHangFormationandanEarlyPermianoriginfortheMuang-NanFormation.Geochemically,theyarecharacterizedbydepletionsinHFSEs(e.g.,Nb,Ta,Ti)andhighLILE/HFSEratios,andtheyhavepositivezirconεHf(t)valuesof8.7–15.9,whichexhibitsthecontinentalarcvolcanicaffinityandpartialmeltingofsubductingoceanicslabinthemagmasource.Combinedwithspatialoccurrenceofthevolcanicrockandexistinggeochronologicalandgeochemicaldata,wesuggestthattheXaignabouli-LuangPrabangvolcanicbeltcanbelinkedtotheLoei-Phetchabunbelt.ThePermian–TriassicvolcanicrocksinthisbeltmightbeaproductoftheNanback-arcbasineastwardsubduction.

1任胜利;孙敏;等. Petrochemistry and Mineral Chemistry Studies on Metamorphic Ultramafic Rocks in Yanghou Area,Northern Fujian,China.地球化学,1999-01.
2Shengdong Wang;Kexin Zhang;Bowen Song;Shucai Li;Jianxing Li;Jiyuan Yu;Jianjun Bu. Detrital Zircon U-Pb Geochronology from Greywackes in the Niujuanzi Ophiolitic Melange, Beishan Area, NW China： Provenance and Tectonic Implications.地质学,2018-01.
3BIAN Weiwei;YANG Tianshui;SHI Yuruo;MA Yiming;JIN Jingjie;GAO Feng;PENG Wenxiao;ZHANG Shihong;WU Huaichun;LI Haiyan. New Zircon SHRIMP U-Pb Ages of the Langjiu Formation Volcanic Rocks in the Shiquanhe Area,Western Lhasa Terrane and their Implications.地质学,2017-02.
4LI Yongjun;YANG Gaoxue;LI Ganyu;WANG Zhenyu;WANG Zuopeng. Petrogenesis of the Paleozoic and Mesozoic Volcanic Rocks in Northwest China.地质学,2015-04.
5WANG Chunyu;SUN Deyou;TIAN Lihui;BU Jun;SHANG Yuhang. Latest Zircon U-Pb Age of the Baiyingaolao Formation Volcanic Rocks in the Keyihe Area of North-Central Da Hinggan Mountains.地质学,2018-05.
6Ma Jiatai(Translated). Ramunion Arrived at the Disaster-Stricken Area of Laos at the First Time.外交学,2018-03.
7LI Jiyanx;SHAN Xuanlong;SUN Zhe;XIE Xiaoting;REN Yu. Thermal simulation of basic volcanic fluid influence on different source rocks.地球化学,2014-02.
8夏邦栋;施光宇;等. Carboniferous Bimodal Volcanic Rocks and Their Plate Tectonic Setting,Hainan Island.地球化学,1992-01.
9李霓;樊祺诚;孙谦;孙如波. Lithogeochemistry of Volcanic Rocks and Hosted Melt Inclusions in Wudalianchi,Heilongjiang,China.地质学,2009-05.
10Neal MCNAUGHTON;David GROVES. Geochronology and Significance of Granites Associated with Gold Deposits in the Jidong Area, China.地质学,2000-02.

Geochronology and Petrochemistry of Volcanic Rocks in the Xaignabouli Area, NW Laos

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Geochronology and Petrochemistry of Volcanic Rocks in the Xaignabouli Area, NW Laos

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