| GEOCHRONOLOGY OF WANYANGSHAN-ZHUGUANGSHAN GRANITOID BATHOLITH:IMPLICATION FOR THE CRUST DEVELOPMENT |
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| 作者姓名： | 李献华 |
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| 作者单位： | Guangzhou Branch，Institute of Geochemistry，Academia Sinica，Guangzhou 510640，PRC |
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| 摘 要： | Single-grain zircon U-Pb analyses, combined with Sm--Nd, Rb--Sr, K--Ar and ~(40)Ar-~(39)Ar datingresults, suggest that there are four magmatic periods in Wanyangshan--Zhuguangshan granitoidbatholith, i.e. late Caledonian (414--434 Ma), Indosinian (220 Ma), middle Yanshanian (155 Ma)and late Yanshanian (105 Ma). The tectonic movement characterized by the unconformablecontact between Mid--Devonian and Pre--Devonian occurred about 380 Ma ago. Magmation istightly related to the regional crustal movement.
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GEOCHRONOLOGY OF WANYANGSHAN-ZHUGUANGSHAN GRANITOID BATHOLITH:IMPLICATION FOR THE CRUST DEVELOPMENT |
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| LI XIAN-HUA Guangzhou Branch.GEOCHRONOLOGY OF WANYANGSHAN-ZHUGUANGSHAN GRANITOID BATHOLITH:IMPLICATION FOR THE CRUST DEVELOPMENT[J].Science in China(Chemistry),1991(5). |
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| Authors: | LI XIAN-HUA Guangzhou Branch |
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| Institution: | LI XIAN-HUA Guangzhou Branch,Institute of Geochemistry,Academia Sinica,Guangzhou 510640,PRC |
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| Abstract: | Single-grain zircon U-Pb analyses, combined with Sm--Nd, Rb--Sr, K--Ar and ~(40)Ar-~(39)Ar dating
results, suggest that there are four magmatic periods in Wanyangshan--Zhuguangshan granitoid
batholith, i.e. late Caledonian (414--434 Ma), Indosinian (220 Ma), middle Yanshanian (155 Ma)
and late Yanshanian (105 Ma). The tectonic movement characterized by the unconformable
contact between Mid--Devonian and Pre--Devonian occurred about 380 Ma ago. Magmation is
tightly related to the regional crustal movement. |
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| Keywords: | granitoid rocks isotope geochronology crust |
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