Title: LA-ICP-MS zircon U-Pb dating of the Tongcun porphyry in Kaihua County,western Zhejiang Province,and its geological significance
Abstract:This paper reports the LA-ICP-MS zircon U-Pb ages of granite porphyry in Tongcun,Kaihua County,Zhejiang Province.The age ranging from 167.6 to 155.6 Ma suggests an intrusion process of magma in Middle...This paper reports the LA-ICP-MS zircon U-Pb ages of granite porphyry in Tongcun,Kaihua County,Zhejiang Province.The age ranging from 167.6 to 155.6 Ma suggests an intrusion process of magma in Middle and Late Jurassic.Jurassic was a tectonic active period during the Yanshanian movement.Regional tectonic stress field of that time characterized by NW-trending extrusion and NE-trending tension formed a series of NE extrusion faults and NW-trending tension faults.The intersection of faults,known as the weak stress area,provided essential invasive channels for large-scale magmatic intrusion in Mesozoic.Therefore,the Tongcun ore deposit not only represents a typical case of Jurassic molybdenum mineralization in west Zhejiang Province but also indicates a very optimistic prospect of mineralization,because magmatic and tectonic activities were very active in Jurassic.Read More
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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Cited By Count: 11
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