Neogene magnetostratigraphy and rock magnetic study of the Kashi   Depression, NW China: Implications to neotectonics in the SW Tianshan   Mountains

doi:10.1002/2015JB012687

CORC > 北京大学 > 地球与空间科学学院

	Neogene magnetostratigraphy and rock magnetic study of the Kashi Depression, NW China: Implications to neotectonics in the SW Tianshan Mountains
	Qiao, Qingqing ; Huang, Baochun ; Piper, John D. A. ; Deng, Tao ; Liu, Chengying
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
	2016
关键词	China Southwest Tianshan magnetostratigraphy foreland basin magnetic fabrics Kashi Depression INDIA-ASIA COLLISION CENOZOIC TECTONIC EVOLUTION NORTHERN TIBETAN PLATEAU DAY CRUSTAL DEFORMATION TIEN-SHAN TARIM BASIN CLIMATE-CHANGE NORTHWEST CHINA FORELAND BASIN EROSION RATES
DOI	10.1002/2015JB012687
英文摘要	The southwest Tianshan Mountains of China are bordered by the Tarim foreland and comprise an actively deforming segment of the India-Asia collisional system. We report a detailed magnetostratigraphic study of the Dashankou section in the Kashi Depression of the Tarim Basin to improve the understanding of the history of sedimentation, denudation, and mountain building in this region. The preferred correlation of the succession with the geomagnetic polarity timescale defines a depositional history between 12.4 and 3.0Ma with a substantial increase in sedimentation rates identified at similar to 6.7Ma corresponding to a pulse of rapid uplift in the southwest Tianshan Mountains. Although climatic changes may have modulated the record during Neogene times, they do not appear to have had an important influence on sediment accumulation rates between 7.0 and 2.6Ma. Magnetic fabrics identify the influence of a regional stress field imparted by ongoing India-Asia collision in the lower part of the succession contrasting with predominantly sedimentary fabrics in the higher part of the succession. A major clastic influx with a maximum age estimate of similar to 3.6Ma comprises the Xiyu conglomerates, and integration with other magnetostratigraphic investigations around the Tianshan demonstrates unambiguously that depositional onset of this coarse clastic episode is diachronous. Hence, the Xiyu Formation cannot be considered as a chronostratigraphic marker related to any specific tectonic or climatic event.; 100 Talents Program of Xinjiang; West Light Foundation of CAS; Innovation Talents Project of Xinjiang; National Nature Science Foundation of China [40525013, 41404054]; SCI(E); ARTICLE; qiaoqq@ms.xjb.ac.cn; bchuang@pku.edu.cn; 3; 1280-1296; 121
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/438478]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Qiao, Qingqing,Huang, Baochun,Piper, John D. A.,et al. Neogene magnetostratigraphy and rock magnetic study of the Kashi Depression, NW China: Implications to neotectonics in the SW Tianshan Mountains[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2016.
APA	Qiao, Qingqing,Huang, Baochun,Piper, John D. A.,Deng, Tao,&Liu, Chengying.(2016).Neogene magnetostratigraphy and rock magnetic study of the Kashi Depression, NW China: Implications to neotectonics in the SW Tianshan Mountains.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH.
MLA	Qiao, Qingqing,et al."Neogene magnetostratigraphy and rock magnetic study of the Kashi Depression, NW China: Implications to neotectonics in the SW Tianshan Mountains".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH (2016).