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2020, 39(4) 838-848 DOI:
10.3969/j.issn.1004-5589.2020.04.010 ISSN: 1004-5589 CN: 22-1111/P |
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Regional geology and tectonic evolution characteristics of Choma-Kalomo block, central-southern Africa |
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XING Shi, LU Wei-yan, JI Shan-qing, DU Ming-long, LIU Chuan, ZHANG Dian-ling, YI Kai |
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No.5 Geological Team, Bureau of Geologic Exploration and Mineral Development of Hebei Province, Tangshan 063000, Hebei, China |
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Abstract：
Choma-Kalomo block mainly consists of metamorphic sedimentary clastic rocks, which were intruded by Mesoproterozoic granitic Choma-Kalomo batholiths. Large number of U-Pb isotopic dating results indicate that the metamorphic sedimentary rocks may have been deposited after (1 861±5)Ma, while the Choma-Kalomo batholith are Mesoproterozoic complex intrusions formed between 1 352 Ma and 1 174 Ma. Through the analysis of existing data, the authors achieve new understandings on the tectonic evolution history and geological background of the Choma-Kalomo block. So far no large scale deposit has been discovered in Choma-Kalomo block, but mineral information indicates great metallogenic potential in Sn (Ta, Nb, Li, Be). |
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Keywords：
central-southern Africa
Choma-Kalomo block
Mesoproterozoic
zircon U-Pb ages
tectonic evolution
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Received 2019-11-25 Revised 2020-07-25 Online: |
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DOI: 10.3969/j.issn.1004-5589.2020.04.010 |
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Email: 454674943@qq.com |
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