干旱区生态环境知识资源中心(Arid): Sedimentation in a Continental High-Frequency Oscillatory Lake in an Arid Climatic Background: A Case Study of the Lower Eocene in the Dongying Depression, China

Arid

	Sedimentation in a Continental High-Frequency Oscillatory Lake in an Arid Climatic Background: A Case Study of the Lower Eocene in the Dongying Depression, China
	Liu Jie; Wang Jian; Cao Yingchang; Song Guoqi
来源期刊	Journal of Earth Science
ISSN	1674-487X
出版年	2017
卷号	28 期号:4 页码:628-644
英文摘要	The sedimentary environment, formation conditions, sedimentary characteristics and the basin evolution model of high-frequency oscillatory lake in arid climatic background of the Lower Eocene in the Dongying depression were studied through the analysis of drilling cores, sporepollen, geochemistry and geophysics data. During the sedimentary period of the Eocene Ek~1-Es~(4x) formations, because of the frequent alternation between dry and wet climates in the arid climatic background and the gentle paleogeomorphology, the lake level and salinity of the Early Eocene Dongying depression frequently and rapidly increased and decreased, which is referred to as a high-frequency oscillatory lake. The sedimentation and distribution of sediments in this high-frequency oscillatory lake basin were controlled by the frequently alternating dry-wet climates. During periods with relatively wet climate, the seasonal floods and unstable rivers led to the formation of over-flooding lake deltas in the gentle slope belt, and fine-grained clastic sediments, with minor thin layers of gypsum-salt rocks in the sag belt. During the relatively arid climatic periods, sedimentation occurred mainly in the limited area of the sag belt with thick gypsum-salt rocks. Because of the impact of the salinity stratification of the lake water, these gypsum-salt rocks exhibit annular structural features. A sedimentary cycle of the oscillatory lake began with isochronous flood channels and ended with relatively thick gypsum rocks and salt rocks. The thickness of one oscillatory cycle is generally 4-20 m. The superposition of multiple sedimentary cycles of the oscillatory lake constitutes the overall vertical filling sequence of the high-frequency oscillatory lake basin.
英文关键词	oscillatory lake clastic sedimentation chemical sedimentation paleoclimate Dongying depression Lower Eocene
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:6028672
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335841
作者单位	Liu Jie, Research Center of Geological Resources and Geological Engineering,China University of Petroleum (East China), Qingdao, Shandong 266580, China.; Wang Jian, School of Geosciences,China University of Petroleum (East China), Qingdao, Shandong 266580, China.; Cao Yingchang, School of Geosciences,China University of Petroleum (East China), Qingdao, Shandong 266580, China.; Song Guoqi, SINOPEC Shengli Oilfield Company, Dongying, Shandong 257015, China.
推荐引用方式 GB/T 7714	Liu Jie,Wang Jian,Cao Yingchang,et al. Sedimentation in a Continental High-Frequency Oscillatory Lake in an Arid Climatic Background: A Case Study of the Lower Eocene in the Dongying Depression, China[J],2017,28(4):628-644.
APA	Liu Jie,Wang Jian,Cao Yingchang,&Song Guoqi.(2017).Sedimentation in a Continental High-Frequency Oscillatory Lake in an Arid Climatic Background: A Case Study of the Lower Eocene in the Dongying Depression, China.Journal of Earth Science,28(4),628-644.
MLA	Liu Jie,et al."Sedimentation in a Continental High-Frequency Oscillatory Lake in an Arid Climatic Background: A Case Study of the Lower Eocene in the Dongying Depression, China".Journal of Earth Science 28.4(2017):628-644.