干旱区生态环境知识资源中心(Arid): 柴西南英西地区下干柴沟组上段蒸发岩沉积旋回特征

Arid

	柴西南英西地区下干柴沟组上段蒸发岩沉积旋回特征
其他题名	Sedimentary Cycles of Evaporitive Sequences in the Upper Member of the Lower Ganchaigou Formation in the Yingxi Area,Southwestern Qaidam Basin
	徐彬 1; 李建明 2; 张永庶 3; 崔俊 3; 余笑航 4
来源期刊	高校地质学报
ISSN	1006-7493
出版年	2019
卷号	25 期号:1 页码:99-107
中文摘要	柴西南英西地区下干柴沟组上段为一套湖盆含蒸发岩系。文章综合运用薄片、岩心、钻井、测井、化验分析等资料,对研究区下干柴沟组上段蒸发岩系沉积旋回特征进行了研究。研究表明,平面上由盆地中心向边缘呈现蒸发岩-混积型碳酸盐岩-碎屑岩的环带状分布,纵向上发育2个三级旋回及6个四级旋回期次。各级蒸发岩沉积旋回具有不对称的特征,即快速湖侵、缓慢湖退。总结出研究区的五种蒸发岩岩相组合类型。研究区蒸发岩为气候干旱、盆地基底快速沉降背景下,湖退时残留盐湖中以蒸发结晶为主具有一定水深的成因,并建立了沉积旋回发育模式。
英文摘要	The upper member of the Lower Ganchaigou Formation in the Yingxi area,southwestern Qaidam Basin,is a set of evaporitebearing lacustrine series.Pate of thin section,cores,drillings logging as well as geochemistry were systematically used to study the characteristics of sedimentary cycles of the series in this paper.Results show a zonal distribution of evaporites to mixed carbonate rocks and to clastic rocks from the center to the margin of the basin laterally.Vertically,two third-order sedimentary cycles and six fourth-order sedimentary cycles were developed.Sedimentary cycles of all the levels are asymmetry with rapid transgression and slow regression.Five types of lithofacies combination of evaporites were identified.Evaporites were formed by evaporitive crystallization under a certain depth of lake water during regression,when there was an arid paleo-climate and rapid subsidence of the basin basement.The development model of sedimentary cycles in the study area is established accordingly.
中文关键词	柴西南 ; 英西地区 ; 下干柴沟组上段 ; 蒸发岩 ; 盐湖 ; 沉积旋回
英文关键词	southwestern Qaidam Basin Yingxi area the upper member of Lower Ganchaigou Formation evaporites salt lake sedimentary cycles
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOLOGY
WOS研究方向	Geology
CSCD记录号	CSCD:6464183
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239213
作者单位	1.长江大学地球科学学院, 武汉, 湖北 430100, 中国; 2.长江大学地球科学学院;;非常规油气湖北省协同创新中心, ;;非常规油气湖北省协同创新中心, 武汉;;武汉, ;; 430100;;430100; 3.中国石油青海油田分公司勘探开发研究院, 敦煌, 甘肃 736202, 中国; 4.中国地质大学(武汉)海洋学院, 武汉, 湖北 430074, 中国
推荐引用方式 GB/T 7714	徐彬,李建明,张永庶,等. 柴西南英西地区下干柴沟组上段蒸发岩沉积旋回特征[J],2019,25(1):99-107.
APA	徐彬,李建明,张永庶,崔俊,&余笑航.(2019).柴西南英西地区下干柴沟组上段蒸发岩沉积旋回特征.高校地质学报,25(1),99-107.
MLA	徐彬,et al."柴西南英西地区下干柴沟组上段蒸发岩沉积旋回特征".高校地质学报 25.1(2019):99-107.