Granite Porphyry SHRIMP U-Pb Age at Top of the Nanhuan Talisaye Formation in Guozigou, <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:place w:st="on">Ili</st1:place> area, and Implications for Glaciogenic Diamictite

Granite Porphyry SHRIMP U-Pb Age at Top of the Nanhuan Talisaye Formation in Guozigou, Ili area, and Implications for Glaciogenic Diamictite

详细信息

责任者：Gao Wei (China Aero Geophysical Survey & Remote Sensing Center for Land and Resources ; Beijing 100083 ; China) ; Zhang Chuanheng
刊名：Geological Review
出版年：2011
卷期：57(4)
关键词：花岗斑岩 ; granite porphyry ; 铀—铅计时 ; U-Pb dating ; 新疆 ; Xinjiang
页码：p.495-504
图表：7 illus., 1 table, 51 refs.
分类号：0801
issnNo：ISSN0371-5736
isbnNo：CN11-1952/P

摘要

There are three diamictite (tillite) units in the Guozigou-Keguqin section in Ili area of the northern part of the Western Tianshan Mountains. This paper reports a magmatic zircon age of (642±5) Ma (²⁰⁶Pb/²³⁸U) from granite-porphyry, which intrudes into the top of the Talisaye Formation. This dating represents the evolved magma age. Even this is the dating of the intrusive body, yet this is a new evidence for the up limit of the Talisaye Formation. So, this paper advanced a new evidence for the Neoproterozoic glaciogenic diamictite between the Guozigou section in the Western Tianshan and some sections in Quruqtagh area in the eastern Tianshan.

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