气候变化领域集成服务门户(CCPortal): Discussion on the basement structure and property of northern Junggar basin

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	Discussion on the basement structure and property of northern Junggar basin
	Zhao Jun-Meng; Huang Ying; Ma Zong-Jin; Shao Xue-Zhong; Cheng Hong-Gang; Wang Wei; Xu Qiang
通讯作者	Zhao, JM (通讯作者)
发表日期	2008
ISSN	0001-5733
起始页码	1767
结束页码	1775
卷号	51 期号:6
英文摘要	The basement structure and property of the Junggar basin has long been a focus for geoscientists. A comprehensive geophysical profile, running from Karamay to Karmst in nearly EW direction and located at the northern part of the Junggar basin, provided with a detailed velocity structure of the crust and uppermost mantle, especially the velocity at the top of the basement. Along the profile, several H type faults have been located, which cut through the crust without obvious dislocation and have a low reflectivity and Q value at the faults, inferred as extensional faults. A joint inversion of gravity with geomagnetism along the profile was carried out and 2D density and 2D magnetic intensity of the crust and uppermost mantle were obtained using 1:200000 gravitational and geomagnetic anomalies in the Junggar basin. Furthermore, the rock types of the basement for the northern part of the Junggar basin were determined by using the relation among velocity. density and rock type at a certain depth range. The result shows that several sections of the basement along the profile are basic to ultra basic materials, indicating that the mass of the uppermost mantle intruded into the crust and mixed with crustal material. This inference is supported by high velocity. high density and high geomagnetic intensity of the crust. Combining with other geophysical and geological data we developed a comprehensive geological interpretation profile. which shows a geodynamic model for the structure and property of the northern Junggar basin.
关键词	TIANSHAN OROGENIC BELT TARIM BASIN MARGIN CHINA
英文关键词	Junggar basin; Seismic converted wave prospecting; Joint inversion of gravity with magnetism; Basement property; Geodynamic model
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000261313500017
来源期刊	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257561
推荐引用方式 GB/T 7714	Zhao Jun-Meng,Huang Ying,Ma Zong-Jin,et al. Discussion on the basement structure and property of northern Junggar basin[J]. 中国科学院青藏高原研究所,2008,51(6).
APA	Zhao Jun-Meng.,Huang Ying.,Ma Zong-Jin.,Shao Xue-Zhong.,Cheng Hong-Gang.,...&Xu Qiang.(2008).Discussion on the basement structure and property of northern Junggar basin.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,51(6).
MLA	Zhao Jun-Meng,et al."Discussion on the basement structure and property of northern Junggar basin".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 51.6(2008).