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2017, 36(2) 381-390 DOI:
10.3969/j.issn.1004-5589.2017.02.006 ISSN: 1004-5589 CN: 22-1111/P |
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Discovery of Middle Devonian metavolcanite series in Jilin: evidence from zircon LA-ICP-MS U-Pb age of original Jifanggou Formation |
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YU Hong-bin1, CHEN Hui-jun2, NIE Li-jun1, LIU Shi-wei2, CUI Tian-ri2, PENG Yu-jing1, LIU Yue-wen1, DI Xin1, ZHOU Kai1, ZHU Shu-hong1 |
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1. Regional Geologic and Mineral Resources Survey of Jilin Province, Changchun 130012, China;
2. Shenyang Center of China Geological Survey, Shenyang 110032, China |
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Abstract��
Based on the study of Jifanggou rock group,the authors confirmed that it is a set of structure strata which is composed of tectonic slices. By collecting two samples (Pm001-6-2, Pm001-7-4) in the behind the Xiawazi of Shanghewan in Jiutai County, which is the original Jifanggou rock group metamorphic acid-intermediate acidic volcanic rocks, the authors obtained the zircon LA-ICP-MS U-Pb age of(389.4±3.0)Ma and(388.3±3.9)Ma, determining that there exists volcanic rock formation of Givet Period of Middle Devonian in Jilin Province. Integrating the correlation with volcanic rock formations in Inner Mongolia, Heilongjiang and Songnen massif, it is concluded that in the southern margin of Jia-Meng massif from Laotudingzi-Baoquan-Xiawazi-Fang-niugou through Songnen Basin to Mandula, there exists a volcanic rock belt in late Early Devonian- early Late Devonian. |
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Keywords��
Jifanggou rock group
zircon LA-ICP-MS U-Pb age
volcanic rock
southeastern Songnen massif
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Received 2017-03-31 Revised 2017-04-18 Online: |
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DOI: 10.3969/j.issn.1004-5589.2017.02.006 |
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Corresponding Authors: |
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Email: chjcc@126.com |
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