A Preliminary study on the Geochronology of the host rocks of the Supergiant Gejiu Tin Deposit, SW China

Cheng, Yanbo, and Mao, Jingwen (2009) A Preliminary study on the Geochronology of the host rocks of the Supergiant Gejiu Tin Deposit, SW China. In: Proceedings of the 10th Biennial SGA Meeting (1), pp. 306-308. From: 10th Biennial Meeting of the SGA 2009, 17-20 August 2009, Townsville, QLD, Australia.

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Abstract

Gejiu is the largest polymetallic tin ore field in the world. It has been known as a granite-related deposit for a long time. The igneous rock series in the ore field comprises gabbro, diorite, granite, alkaline rocks and lamprophyre. Precise zircon U-Pb dating indicates that the intrusions formed mainly in an age range of 76 to 85 Ma. We propose that the granite-related polymetallic tin deposits in the Gejiu ore district are part of the large-scale W-Sn mineralization and related-magmatism of the southeastern Yunnan and western Guangxi provinces, southwest China. Moreover, we also suggest that they were formed in association with lithospheric thinning occurred in Southwestern China during the Cretaceous.

Item ID: 40312
Item Type: Conference Item (Research - E1)
ISBN: 978-0-9805586-8-5
Keywords: granite; zircon U-Pb age; lithospheric thinning
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Funders: National Basic Research Program of China (973 Program), Geological Survey Program from China Geological Survey
Projects and Grants: National Basic Research Program of China grant 2007CB411405 and 2007CB411407, Geological Survey Program from China Geological Survey grant 1212010634001
Date Deposited: 02 Sep 2015 02:12
FoR Codes: 04 EARTH SCIENCES > 0403 Geology > 040307 Ore Deposit Petrology @ 100%
SEO Codes: 84 MINERAL RESOURCES (excl. Energy Resources) > 8401 Mineral Exploration > 840199 Mineral Exploration not elsewhere classified @ 100%
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