干旱区生态环境知识资源中心(Arid): Clay Minerals and Element Geochemistry of Clastic Reservoirs in the Xiaganchaigou Formation of the Lenghuqi Area, Northern Qaidam Basin, China

Arid

DOI	10.3390/min9110678
	Clay Minerals and Element Geochemistry of Clastic Reservoirs in the Xiaganchaigou Formation of the Lenghuqi Area, Northern Qaidam Basin, China
	Sun, Guoqiang 1,2; Wang, Yetong 1,3; Guo, Jiajia 4; Wang, Meng 1,3; Jiang, Yun 1,3; Pan, Shile 1,3
通讯作者	Sun, Guoqiang
来源期刊	MINERALS
EISSN	2075-163X
出版年	2019
卷号	9 期号:11
英文摘要	We performed mineralogical and geochemical analyses of core samples from the Lenghuqi area in the northern marginal tectonic belt of the Qaidam Basin. The clay mineralogy of the Xiaganchaigou Formation sandstone is dominated by I + I/S + C types and characterized by high illite, a higher mixed-layer illite/smectite and chlorite, lesser smectite, and an absence of kaolinite. The clay minerals reflect that the Oligocene sedimentary basin formed in an arid-semi-arid climate with weak leaching and chemical weathering, and that diagenesis occurred in a K+- and Mg2+-rich alkaline environment. Measured major oxide concentrations show clear correlations. The lower Xiaganchaigou Formation is representative of a dry and cold freshwater sedimentary environment, whereas the upper Xiaganchaigou Formation is warmer and more humid. Trace element and rare earth element variations indicate that the paleoclimate conditions of the lower Xiaganchaigou Formation sedimentary period were relatively cold and dry, while the upper Xiaganchaigou Formation formed under warmer and more humid climate conditions. These findings reflect a global climate of a cold and dry period from the late Eocene to early Oligocene, and a short warming period in the late Oligocene.
英文关键词	clay minerals major elements trace elements sedimentary environment diagenetic Environment Qaidam Basin
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000502267100031
WOS关键词	RARE-EARTH ; EARLY OLIGOCENE ; SEDIMENTS ; DIAGENESIS ; PALEOREDOX ; MECHANISM
WOS类目	Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
WOS研究方向	Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing
EI主题词	2019-11-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310555
作者单位	1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China; 2.Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 4.Petrochina, Res Inst Petr Explorat & Dev Northwest, Lanzhou 730020, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Sun, Guoqiang,Wang, Yetong,Guo, Jiajia,et al. Clay Minerals and Element Geochemistry of Clastic Reservoirs in the Xiaganchaigou Formation of the Lenghuqi Area, Northern Qaidam Basin, China[J],2019,9(11).
APA	Sun, Guoqiang,Wang, Yetong,Guo, Jiajia,Wang, Meng,Jiang, Yun,&Pan, Shile.(2019).Clay Minerals and Element Geochemistry of Clastic Reservoirs in the Xiaganchaigou Formation of the Lenghuqi Area, Northern Qaidam Basin, China.MINERALS,9(11).
MLA	Sun, Guoqiang,et al."Clay Minerals and Element Geochemistry of Clastic Reservoirs in the Xiaganchaigou Formation of the Lenghuqi Area, Northern Qaidam Basin, China".MINERALS 9.11(2019).