Apatite Fission Track Constraints on the Pattern of Faulting in the North Qilian Mountain

The Qilian （祁连） Mountain is an active orogenic belt located at the northeastern margin of the Tibetan Plateau. During the process of continuous convergence between Indian and Eurasian plates, the Qilian Mountain grow correspondingly by means of reaction of old faults and generation of new ones. Here...

Full description

Saved in:

Bibliographic Details
Published in:	Journal of earth science (Wuhan, China) Vol. 24; no. 4; pp. 569 - 578
Main Author:	李清洋潘保田胡小飞胡振波李富强杨顺智
Format:	Journal Article
Language:	English
Published:	Berlin/Heidelberg Springer Berlin Heidelberg 01-08-2013 Springer Nature B.V
Subjects:	Apatite Belts Biogeosciences Blocking Cenozoic Convergence Cretaceous Earth and Environmental Science Earth science Earth Sciences Fault diagnosis Faults Geochemistry Geology Geotechnical Engineering & Applied Earth Sciences Minerals Miocene Mountains Oligocene Phases Time measurements 北祁连山印度板块拉萨地块断层活动欧亚板块磷灰石裂变径迹约束模式青藏高原 China, People's Rep., Qinghai Prov., Qilian Mts Eurasian Plate China, People's Rep., Xizang, Tibetan Plateau North Qilian Mountain fault activity AFT
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	The Qilian （祁连） Mountain is an active orogenic belt located at the northeastern margin of the Tibetan Plateau. During the process of continuous convergence between Indian and Eurasian plates, the Qilian Mountain grow correspondingly by means of reaction of old faults and generation of new ones. Here we present apatite fission-track data along a river profile crossing three minor fault （the Minle （民乐）-Damaying （大马营） fault, the Huangcheng （皇城）-Taerzhuang （塔尔庄） fault and the Kangningqiao （唐宁桥） fault） which compose the North Qilian fault （NQF） to test the timing and pat- terns of the fault activities. Apatite fission-track （AFT） results indicate that these minor faults expe- rienced two active phases in the Cretaceous and the Oligocene-Miocene. Further research indicate that the initiation timing of faulting became younger northward in both active periods and the later phase probably more active than the former phase. These tectonic activities might be highly related to the docking of the Lhasa Block to the south in the Cretaceous and uplift and expansion of the Tibetan Pla- teau in the Cenozoic.
Bibliography:	Qingyang Li＊, Baotian Pan , Xiaofei Hu, Zhenbo Hu , Fuqiang Li Key Laboratory of Western China＇ s Environmental Systems （Ministry of Education）, Research School of Arid Environment ＆ Climate Change, Lanzhou University, Lanzhou 730000, China Shunzhi Yang Sulige Gasfield Development Company, PCOC, Xi＇ an 710018, China The Qilian （祁连） Mountain is an active orogenic belt located at the northeastern margin of the Tibetan Plateau. During the process of continuous convergence between Indian and Eurasian plates, the Qilian Mountain grow correspondingly by means of reaction of old faults and generation of new ones. Here we present apatite fission-track data along a river profile crossing three minor fault （the Minle （民乐）-Damaying （大马营） fault, the Huangcheng （皇城）-Taerzhuang （塔尔庄） fault and the Kangningqiao （唐宁桥） fault） which compose the North Qilian fault （NQF） to test the timing and pat- terns of the fault activities. Apatite fission-track （AFT） results indicate that these minor faults expe- rienced two active phases in the Cretaceous and the Oligocene-Miocene. Further research indicate that the initiation timing of faulting became younger northward in both active periods and the later phase probably more active than the former phase. These tectonic activities might be highly related to the docking of the Lhasa Block to the south in the Cretaceous and uplift and expansion of the Tibetan Pla- teau in the Cenozoic. North Qilian Mountain, AFT, fault activity. 42-1788/P ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1674-487X 1867-111X
DOI:	10.1007/s12583-013-0350-1