Crustal structure of the northern margin of north China craton from Huailai to Sonid Youqi profile

doi:10.6038/cjg20140213

	Crustal structure of the northern margin of north China craton from Huailai to Sonid Youqi profile
	Li Wen-Hui 6; Gao Rui ; Keller Randy 2; Li Qiu-Sheng ; Hou He-Sheng ; Li Ying-Kang ; Zhang Shi-Hong
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2014
卷号	57 期号:2 页码:472-483
关键词	Wide angle reflection and refraction Northern margin of the north China craton Central Asian orogenic belt Intracontinental orogen Crustal structure
ISSN号	0001-5733
DOI	10.6038/cjg20140213
英文摘要	The SinoProbe-02 North China joint seismic experiment consisted of three seismic recording efforts along 453 km long profile. The profile extended from the Huailai basin, across the Yinshan-Yanshan belt, Inner Mongolia paleo-uplift, Bainaimiao arc, Ondor Sum accretion complex to the Solonker suture zone. We processed, analyzed, and modeled the data collected during the wide-angle reflection and refraction effort. The seismic waves from 8 explosions were recorded by 300 Texan recorders. The P-wave field provided good quality data for most of the profile. Arrivals of refracted and reflected waves from sediments and basement (Pg), intracrustal phases (PcP, PIP), and the Moho (PmP, Pn) were typically observed. Hole's first arrival tomography program was used to obtain the upper crustal velocity structure. And Zelt's 2D travel time raytracing and inversion program (Rayinvr) was used to obtain the full crustal structure. The final 2D P-wave velocity model contains many features of tectonic significance: (1) The flat and relatively shallow Moho in the Central Asia Orogeny Belt (CAOB) may be attributed to the extension; thicker crust appears beneath the Yinshan-Yanshan belt and was probably generated by compression in the Jurassic-Cretaceous and modified during the later extension; (2) The velocity structure varies significantly from the NCC to the CAOB, and the boundary between them appears at the Chifeng-Bayan Obo fault; (3) Relatively high velocities in the upper crust of the middle part of the profile may represent the outcrop of large area granites; strong velocity variations beneath the Bainaimiao arc and Ondor Sum subduction accretion complex indicate that multiple pulses of magmatism occurred during the complex tectonic evolution, of this area.
学科主题	固体地球物理学
WOS关键词	ASIAN OROGENIC BELT ; TECTONIC IMPLICATIONS ; CONTINENTAL GROWTH ; INNER-MONGOLIA ; PETROGENESIS ; COLLAGE ; BLOCK ; MODEL
WOS研究方向	Geochemistry & Geophysics
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000332443600013
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40557]
专题	中国地质科学院地质研究所
作者单位	1.Minist Land & Resources, Key Lab Earthprobe & Geodynam, Beijing 100037, Peoples R China 2.Chinese Acad Geol Sci, Lithosphere Res Ctr, Inst Geol, Beijing 100037, Peoples R China 3.Univ Oklahoma, Norman, OK 73019 USA 4.Core & Samples Ctr Land & Resources, Yanjiao 065201, Hebei, Peoples R China 5.China Univ Geosci, Beijing 100083, Peoples R China 6.中国地质科学院地质研究所
推荐引用方式 GB/T 7714	Li Wen-Hui,Gao Rui,Keller Randy,et al. Crustal structure of the northern margin of north China craton from Huailai to Sonid Youqi profile[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2014,57(2):472-483.
APA	Li Wen-Hui.,Gao Rui.,Keller Randy.,Li Qiu-Sheng.,Hou He-Sheng.,...&Zhang Shi-Hong.(2014).Crustal structure of the northern margin of north China craton from Huailai to Sonid Youqi profile.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,57(2),472-483.
MLA	Li Wen-Hui,et al."Crustal structure of the northern margin of north China craton from Huailai to Sonid Youqi profile".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 57.2(2014):472-483.