Fabric kinematics of eclogite and deep continental subduction: EBSD;study of eclogite from the main hole of the Chinese Continental;Scientific Drilling Project.

	Fabric kinematics of eclogite and deep continental subduction: EBSD;study of eclogite from the main hole of the Chinese Continental;Scientific Drilling Project.
	Xu ZhiQin 3; Wang Qin ; Chen FangYuan ; Liang FengHua ; Tang ZheMin
刊名	ACTA PETROLOGICA SINICA
	2006
卷号	22 期号:7 页码:1799-1809
关键词	eclogite lattice-preferred orientation electron backscatter diffraction kinematics Sulu continental subduction
ISSN号	1000-0569
英文摘要	The main hole of the Chinese Continental Scientific Drilling Project ( CCSD-MH) is located in the Maobei eclogite complex, south Sulu UHP terrane. Eclogites from 0 similar to 600m in depth of the CCSD-MH are characterized by east-dipping foliation with moderate dip angle, S-N stretching lineation, "A" type shear fold and a series of smallVductile shear zones. Lattice-preferred orientations ( LPO) of omphacite and garnet in 7 eclogite samples were measured using electron backscatter diffraction (EBSD) technique. Garnet appears to be randomly oriented whereas omphacite displays very strong LPO. The [ 00 1] -axes of omphacite are concentrated parallel or subparallel to the lineation, the (010) -poles and [ 100] -axes normal to the foliation, and {110} -poles form the girdle perpendicular to the foliation, implying that the dominant slip systems in omphacite are [ 001] ( 100) and 1/2 < 1 (1) over bar0 >. Based on high-temperature deformation of clinopyroxene in laboratory, the Maobei eclogites experienced the dislocation creep at 800 900 C and UHP conditions. The asymmetry of omphacite LPO with respect to foliation and lineation reveals top-to-south shear sense in eclogites, which was formed during the northward deep subduction of the Yangtz plate beneath the North China plate. The reconstructed architecture of the Maobei eclogite complex is a sheared flow fold developed under UHP conditions. Therefore early petrofabries preserved in eclogites can furnish important kinematic information on the relative plate motions in deep subduction zones.
学科主题	变质岩岩石学
WOS关键词	HIGH-TEMPERATURE DEFORMATION ; LATTICE-PREFERRED ORIENTATIONS ; DIOPSIDE ; SINGLE-CRYSTAL ; METAMORPHIC ROCKS ; SEISMIC PROPERTIES ; EASTERN CHINA ; PRESSURE ; MICROSTRUCTURES ; CLINOPYROXENE ; CONSEQUENCES
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000245957000005
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/38220]
专题	中国地质科学院地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Geol, Key Lab Continental Dynam, Minist Land & Resources, Beijing 100037, Peoples R China. 2.Nanjing Univ, Dept Earth Sci, Nanjing 210093, Peoples R China. 3.中国地质科学院地质研究所
推荐引用方式 GB/T 7714	Xu ZhiQin,Wang Qin,Chen FangYuan,et al. Fabric kinematics of eclogite and deep continental subduction: EBSD;study of eclogite from the main hole of the Chinese Continental;Scientific Drilling Project.[J]. ACTA PETROLOGICA SINICA,2006,22(7):1799-1809.
APA	Xu ZhiQin,Wang Qin,Chen FangYuan,Liang FengHua,&Tang ZheMin.(2006).Fabric kinematics of eclogite and deep continental subduction: EBSD;study of eclogite from the main hole of the Chinese Continental;Scientific Drilling Project..ACTA PETROLOGICA SINICA,22(7),1799-1809.
MLA	Xu ZhiQin,et al."Fabric kinematics of eclogite and deep continental subduction: EBSD;study of eclogite from the main hole of the Chinese Continental;Scientific Drilling Project.".ACTA PETROLOGICA SINICA 22.7(2006):1799-1809.