Zircon U-Pb SHRIMP Ages from the Late Paleozoic Turpan-Hami Basin,NW China

被引：0
|
作者：
Xiang Mao [1 ,2 ]
Jianghai Li [1 ,2 ]
Huatian Zhang [1 ,2 ]
机构：
[1] The Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, School of Earth and Space Sciences,Peking University
[2] Institute of Oil and Gas, Peking University
来源：
Journal of Earth Science | 2014年 / 25卷 / 05期
关键词：
SHRIMP U-Pb zircon geochronology; Turpan-Hami Basin; Permian; Yierxitu Formation; Central Asian orogenic belt;
D O I：
暂无
中图分类号：
P534.4 [古生代（界）]; P597.3 [];
学科分类号：
070902 ; 070903 ;
摘要：
Permian volcanic rocks are widely distributed in the Turpan-Hami Basin, which is part of the Central Asian orogenic belt. Here we present SHRIMP zircon data for the rhyolite in Well Baocan 1, one of the deepest wells in the basin. The 283.9±2.7 Ma reported in our study provides the best precise age determination for the Yierxitu Formation, the oldest Permian layer of Hami Depression, one of the three substructural units of the Turpan-Hami Basin, and a potential hydrocarbon reservoir in this basin. Our data refines earlier imprecise 39Ar-40Ar ages and shows that the volcanic rocks both inside the Turpan-Hami Basin and along its margin are almost coeval. We delineate a collisional orogenesis, and the new age of 283.9±2.7 Ma may limit the latest time of the collision orogenesis.
引用
收藏
页码：924 / 931
页数：8
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