Geochemistry characteristics of the Low Permian sedimentary rocks from   central uplift zone, Qiangtang Basin, Tibet: insights into source-area   weathering, provenance, recycling, and tectonic setting

doi:10.1007/s12517-014-1583-8

CORC > 北京大学 > 地球与空间科学学院

	Geochemistry characteristics of the Low Permian sedimentary rocks from central uplift zone, Qiangtang Basin, Tibet: insights into source-area weathering, provenance, recycling, and tectonic setting
	Hu, Junjie ; Li, Qi ; Fang, Nianqiao ; Yang, Jingyi ; Ge, Dongsheng
刊名	ARABIAN JOURNAL OF GEOSCIENCES
	2015
关键词	Geochemistry Qiangtang Basin Central uplift zone Zhanjin Formation Provenance Tectonic setting TRACE-ELEMENT CHARACTERISTICS UPPER CONTINENTAL-CRUST PALEO-TETHYS OCEAN EVOLUTION EARTH CLASSIFICATION METASEDIMENTS SUBDUCTION GRAYWACKES CHEMISTRY
DOI	10.1007/s12517-014-1583-8
英文摘要	There is hot debate on contrasting hypotheses on properties of the central uplift zone, Qiangtang Basin, northern Tibet Plateau. The Qiangzi 5 Well in the Jiaomuri area, central uplift zone of northern Tibet Plateau, encounters a fine-clastic sedimentary-volcanic breccia-carbonate rock series of the Low Permian Zhanjin Formation. Study on the series is of great significance for investigating the Permian geotectonic setting of the central uplift zone. Geochemistry information of these rocks has been identified by major, trace, and rare earth element (REE) analysis. Samples' Al2O3/SiO2 ratios range from 0.28 to 0.41, chemical index of alteration is less than 75, respectively, indicating that the source rocks are fresh and of low maturity, and are suffering from weak chemical weathering and sedimentary recycling. Samples have features such as low-medium light rare earth element (LREE) fractionation ((La/Sm) N = 1.88-4.37) and a relatively flat heavy REE (HREE) ((Gd/Yb) N = 1.07-1.56) pattern and most of them do not show any negative Eu anomaly. The samples have an Al2O3/TiO2 ration of < 14, La/Sc of < 2, and Co/Th in the range of 1-10. The F1-F2 and F3-F4 diagrams, etc. show that the source rocks of Zhanjin Formation's sedimentary rocks are arc-like basalts and andesites, and proves that Zhanjin Formation sedimentary rocks might have been formed in the island arcs setting, most probably back-arc basin.; Chengdu Center, China Geological Survey [121011221112]; National Natural Science Foundation of China [41034853]; SCI(E); ARTICLE; liqi@cugb.edu.cn; 8; 5373-5388; 8
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/417611]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Hu, Junjie,Li, Qi,Fang, Nianqiao,et al. Geochemistry characteristics of the Low Permian sedimentary rocks from central uplift zone, Qiangtang Basin, Tibet: insights into source-area weathering, provenance, recycling, and tectonic setting[J]. ARABIAN JOURNAL OF GEOSCIENCES,2015.
APA	Hu, Junjie,Li, Qi,Fang, Nianqiao,Yang, Jingyi,&Ge, Dongsheng.(2015).Geochemistry characteristics of the Low Permian sedimentary rocks from central uplift zone, Qiangtang Basin, Tibet: insights into source-area weathering, provenance, recycling, and tectonic setting.ARABIAN JOURNAL OF GEOSCIENCES.
MLA	Hu, Junjie,et al."Geochemistry characteristics of the Low Permian sedimentary rocks from central uplift zone, Qiangtang Basin, Tibet: insights into source-area weathering, provenance, recycling, and tectonic setting".ARABIAN JOURNAL OF GEOSCIENCES (2015).