Early Cretaceous extension of the Yiwulushan metamorphic core complex

IMR OpenIR

	Early Cretaceous extension of the Yiwulushan metamorphic core complex
其他题名	Early Cretaceous extension of the Yiwulushan metamorphic core complex
	Li Gang 1; Xu ZhongYuan 1; Liu ZhengHong 1; Li YongFei 2; Li ShiChao 1; Dong XiaoJie 1
	2013
发表期刊	ACTA PETROLOGICA SINICA
ISSN	1000-0569
卷号	29 期号:3 页码:938-952
摘要	The deformation and distribution of tectonites along the Waziyu detachment fault and ductile shear zone in the lower footwall are analyzed by detailed field observations and laboratorial analysis. Based on the analyses of macroscopic deformation, microstructure and lattice preferred orientation of quartzs, we make sure that the evolution of the Early Cretaceous extension has the transition from the brittle-ductile deformation in high-greenschist faces to brittle deformation in low-greenschist faces, which shows the uplifting from shallow crust to near-surface. Analysizing the evolutionary processes of the Early Cretaceous extension combine the Ar-40/Ar-39 isotope ages of muscovites and other chronological dating in the ductile shear zone with characteristics of strata in the superposed extensional basin. The results support that the extension occurred at 132 similar to 117Ma and the deformation intensity was weakened gradually, moreover, the active period was longer in the north than in the south. The shear motion sense in the Yiwulushan area and the movement of the Pacific Plate and the Izanagi Plate in the different Mesozoic periods suggest the Mesozoic extension of the Yiwulushan area were controlled by the drifting of plates in the Western Pacific.
关键词	NORTH CHINA CRATON WESTERN LIAONING PROVINCE DUCTILE SHEAR ZONES TECTONIC IMPLICATIONS LIAODONG PENINSULA VOLCANIC-ROCKS NE CHINA CONSTRAINTS DEFORMATION QUARTZ Metamorphic core complex Detachment fault Electron Backscatter Diffraction (EBSD) Ar-40/Ar-39 Yiwulushan
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:4851849
引用统计	被引频次：10[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/151375
专题	中国科学院金属研究所
作者单位	1.吉林大学 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Li Gang,Xu ZhongYuan,Liu ZhengHong,et al. Early Cretaceous extension of the Yiwulushan metamorphic core complex[J]. ACTA PETROLOGICA SINICA,2013,29(3):938-952.
APA	Li Gang,Xu ZhongYuan,Liu ZhengHong,Li YongFei,Li ShiChao,&Dong XiaoJie.(2013).Early Cretaceous extension of the Yiwulushan metamorphic core complex.ACTA PETROLOGICA SINICA,29(3),938-952.
MLA	Li Gang,et al."Early Cretaceous extension of the Yiwulushan metamorphic core complex".ACTA PETROLOGICA SINICA 29.3(2013):938-952.