干旱区生态环境知识资源中心(Arid): Clay mineralogy of the first and second members of the Nenjiang Formation, Songliao Basin: Implications for paleoenvironment in the Late Cretaceous

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	Clay mineralogy of the first and second members of the Nenjiang Formation, Songliao Basin: Implications for paleoenvironment in the Late Cretaceous
	Gao Yuan; Xi Dangpeng; Qin Zuohuan; Ma Pengfei; Wang Chengshan
来源期刊	Science China. Earth Sciences
ISSN	1674-7313
出版年	2018
卷号	61 期号:3 页码:327-338
英文摘要	The first and second members of the Nenjiang Formation (K_2n~(1+2)) in the Songliao Basin, northeast China, are an interval of dark-colored mudstone. Paleoenvironmental studies of these strata are useful for understanding the terrestrial environment under a greenhouse climate and hydrocarbon accumulation in lake basins. In this study, clay mineralogy of the K_2n~(1+2) from four borehole or outcrop sections is investigated to understand terrestrial paleoenvironment during the depositional period in the Late Cretaceous. In the mudstone samples, smectite and illite are the predominant clay minerals, and were derived from weathering of parent rocks in a temperate, sub-humid to sub-arid climate; kaolinite and chlorite are minor clay species. The difference in the clay-mineral assemblages between the eastern and western margins of the basin was primarily controlled by provenance lithology, and the high smectite content in the western basin resulted from alteration of volcanic rocks exposed in the Greater Xingan Range area. The increasing illite content and ratio of illite/smectite percentages in the upper part of the first member of the Nenjiang Formation indicate paleoenvironmental change. This temporal change in the clay-mineral composition was primarily caused by a regionally cooler and drier paleoclimate, consistent with previous paleoenvironmental reconstructions.
英文关键词	Clay mineral Nenjiang Formation Songliao Basin Paleoenvironment Late Cretaceous
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:6190161
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335920
作者单位	Gao Yuan, China University of Geosciences(Beijing);;School of Earth Sciences and Resources, China University of Geosciences(Beijing), State Key Laboratory of Biogeology and Environmental Geology;;, ;;, Beijing;;Beijing 100083;;100083.; Xi Dangpeng, China University of Geosciences(Beijing);;School of Earth Sciences and Resources, China University of Geosciences(Beijing), State Key Laboratory of Biogeology and Environmental Geology;;, ;;, Beijing;;Beijing 100083;;100083.; Wang Chengshan, China University of Geosciences(Beijing);;School of Earth Sciences and Resources, China University of Geosciences(Beijing), State Key Laboratory of Biogeology and Environmental Geology;;, ;;, Beijing;;Beijing 100083;;100083.; Qin Zuohuan, School of Earth Sciences and Resources, China University of Geosciences(Beijing), Beijing 100083, China.; Ma Pengfei, Tongji University, State Key Laboratory of Marine Geology, Shanghai 200092, China.
推荐引用方式 GB/T 7714	Gao Yuan,Xi Dangpeng,Qin Zuohuan,et al. Clay mineralogy of the first and second members of the Nenjiang Formation, Songliao Basin: Implications for paleoenvironment in the Late Cretaceous[J],2018,61(3):327-338.
APA	Gao Yuan,Xi Dangpeng,Qin Zuohuan,Ma Pengfei,&Wang Chengshan.(2018).Clay mineralogy of the first and second members of the Nenjiang Formation, Songliao Basin: Implications for paleoenvironment in the Late Cretaceous.Science China. Earth Sciences,61(3),327-338.
MLA	Gao Yuan,et al."Clay mineralogy of the first and second members of the Nenjiang Formation, Songliao Basin: Implications for paleoenvironment in the Late Cretaceous".Science China. Earth Sciences 61.3(2018):327-338.