Intensified Late Miocene Deformation in the Northern Qaidam Basin, Northern Tibetan Plateau, Constrained by Apatite Fission-Track Thermochronology

被引：1

作者：

He, Pengju ^{[1
,2
]}

Song, Chunhui ^{[1
,2
]}

Wang, Yadong ^{[3
,4
]}

Zhang, Yihu ^{[1
,2
]}

Chen, Wenqi ^{[1
,2
]}

Meng, Qingquan ^{[1
,2
]}

Zhao, Yuanhao ^{[1
,2
]}

机构：

[1] Lanzhou Univ, Sch Earth Sci, Lanzhou, Peoples R China

[2] Lanzhou Univ, Key Lab Mineral Resources Western China, Lanzhou, Peoples R China

[3] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China

[4] Key Lab Petr Resources, Lanzhou, Peoples R China

来源：

FRONTIERS IN EARTH SCIENCE | 2021年 / 9卷

基金：

中国国家自然科学基金;

关键词：

Cenozoic; northern Qaidam Basin; Tibetan plateau; fission track; tectonic deformation; CENOZOIC COOLING HISTORY; QILIAN SHAN; HEXI CORRIDOR; TECTONIC EVOLUTION; GEOLOGIC EVOLUTION; NORTHWARD GROWTH; UPLIFT; CHINA; MAGNETOSTRATIGRAPHY; INITIATION;

D O I：

10.3389/feart.2021.750993

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The Cenozoic tectonic evolution of the North Qaidam-Qilian Shan fold-thrust belt in the northern Tibetan Plateau is important to understanding the tectonic rejuvenation of orogeny and growth of the plateau. However, the deformation processes in this region remain controversial. This study presents new apatite fission track (AFT) data from Paleogene strata in the northern Qaidam Basin to investigate the time of deformation in this site. Thermal modeling of these partially annealed detrital AFT ages shows a thermal history with a noticeable transition from heating to cooling after similar to 10 Ma. This transition is attributed to the intensified thrusting and folding of the northern Qaidam Basin since similar to 10 Ma. Integrated with published tectonics and thermochronology results, we suggest the North Qaidam-Qilian Shan fold-thrust belt experienced prevailing tectonism since the late Miocene.

引用

页数：11

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