Evolution of Basin-Range Pattern in Southwest Margin of Yangtze Block during Late Triassic to Early Jurassic: Evidence of Detrital Zircon U-Pb Geochronology from Chuxiong Basin

被引：2

作者：

Yan Z. ^{[1
,2
,3
]}

Yan C. ^{[1
]}

Shao C. ^{[1
]}

Zhang Z. ^{[4
]}

Ye T. ^{[1
]}

Zhang D. ^{[1
]}

Ren C. ^{[4
]}

Nie Z. ^{[4
]}

Zhao S. ^{[3
]}

Gong C. ^{[1
]}

Zhao W. ^{[1
]}

机构：

[1] State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang

[2] Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources, Institute of Geology, Chinese Academy of Geological Sciences, Beijing

[3] State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu

[4] Southwest Oil and Gas Field Company, PetroChina, Chengdu

来源：

Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2023年 / 48卷 / 04期

关键词：

basin-range pattern; Chuxiong basin; Indosinian; southwest margin of Yangtze block; structural geology; zircon U-Pb dating;

D O I：

10.3799/dqkx.2022.400

中图分类号：

学科分类号：

摘要：

There exist divergent views about the Indosinian tectonic nature of basin and the evolution of basin-range pattern in the southwest margin of the Yangtze block. Detrital zircon U-Pb dating and detrital provenance analysis of sandstone samples from the Upper Triassic-Lower Jurassic of Xiangyun Section in the western Chuxiong basin were carried out. The results show that the detrital sources of the Upper Triassic Yunnanyi Formation and Luojiadashan Formation are mainly from the Middle-Lower Triassic and Permian in the Upper Yangtze region. The detrital sources of the Upper Triassic Baitutian Formation and the Lower Jurassic Fengjiahe Formation are mainly from the Songpan-Ganzi terrane and Kangdian ancient land. Combined with the sedimentary environment evolution and regional geological setting, it is considered that the orogeny is relatively weak during the earlier Late Triassic, and Chuxiong basin is an underfilled basin, whose clastic source supply is insufficient. From the later Late Triassic to Early Jurassic, the tectonic evolution of Chuxiong basin was controlled by the thrust nappe of Ailaoshan orogenic belt, but the sedimentary filling process of Chuxiong basin was mainly controlled by the rapid rise of Songpan-Ganzi orogenic belt. © 2023 China University of Geosciences. All rights reserved.

引用

页码：1259 / 1270

页数：11

共 39 条

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