| SHRIMP Zircon U-Pb Dating of Gabbro and Granite from the Huashan Ophiolite, Qinling Orogenic Belt, China： Neoproterozoic Suture on the Northern Margin of the Yangtze Craton |
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| 作者姓名： | SHI Yuruo LIU Dunyi ZHANG Zongqing MIAO Laicheng ZHANG Fuqin and XUE Hongmei Beijing SHRIMP Center Institute of Geology Chinese Academy of Geological Sciences Beijing Institute of Geology and Geophysics Chinese Academy of Sciences Beijing No. Geological Team Xinjiang Bureau of Geology and Mineral Resources Altay Xinjiang |
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| 作者单位： | SHI Yuruo，LIU Dunyi，ZHANG Zongqing，MIAO Laicheng，ZHANG Fuqin and XUE Hongmei Beijing SHRIMP Center，Institute of Geology，Chinese Academy of Geological Sciences，Beijing 100037 Institute of Geology and Geophysics，Chinese Academy of Sciences，Beijing 100029 No. 4 Geological Team，Xinjiang Bureau of Geology and Mineral Resources，Altay，Xinjiang 836500 |
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| 摘 要： | The recently identified Huashan ophiolitic melange was considered as the eastern part of the Mianliie suture in the Qinling orogenic belt. SHRIMP zircon U-Pb geochronology on gabbro from the Huashan ophiolite and granite intruding basic volcanic rocks indicates crystallization ages of 947±14 Ma and 876±17 Ma respectively. These ages do not support a recently proposed Hercynian Huashan Ocean, but rather favor that a Neoproterozoic suture assemblage (ophiolite) is incorporated into the younger (Phanerozoic) Qinling orogenic belt.
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| 关 键 词： | 华山 蛇绿岩 秦岭造山带 辉长岩 花岗岩 SHRIMP U-Pb 锆石年代 测年 扬子克拉通北缘 新原生代缝合带 |
SHRIMP Zircon U-Pb Dating of Gabbro and Granite from the Huashan Ophiolite,Qinling Orogenic Belt,China: Neoproterozoic Suture on the Northern Margin of the Yangtze Craton |
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| Authors: | SHI Yuruo LIU Dunyi ZHANG Zongqing MIAO Laicheng ZHANG Fuqin and XUE Hongmei Beijing SHRIMP Center |
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| Institution: | SHI Yuruo,LIU Dunyi,ZHANG Zongqing,MIAO Laicheng,ZHANG Fuqin and XUE Hongmei Beijing SHRIMP Center,Institute of Geology,Chinese Academy of Geological Sciences,Beijing Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing No. Geological Team,Xinjiang Bureau of Geology and Mineral Resources,Altay,Xinjiang |
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| Abstract: | The recently identified Huashan ophiolitic mélange was considered as the eastern part of the Mianliie suture in the Qinling orogenic belt. SHRIMP zircon U-Pb geochronology on gabbro from the Huashan ophiolite and granite intruding basic volcanic rocks indicates crystallization ages of 947±14Ma and 876±17 Ma respectively. These ages do not support a recently proposed Hercynian Huashan Ocean, but rather favor that a Neoproterozoic suture assemblage (ophiolite) is incorporated into the younger (Phanerozoic) Qinling orogenic belt. |
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| Keywords: | SHRIMP Neoproterozoic Ophiolite Huashan Mianliie Suture Qinling |
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