干旱区生态环境知识资源中心(Arid): 辫状河-曲流河转换模式探讨--以准噶尔盆地南缘头屯河组露头为例

Arid

	辫状河-曲流河转换模式探讨--以准噶尔盆地南缘头屯河组露头为例
其他题名	Discussion on the Model of Braided River Transform to Meandering River: As an example of Toutunhe Formation in Southern Junggar Basin
	谭程鹏 1; 于兴河 1; 李胜利 1; 李顺利 1; 陈彬滔 2; 单新 1; 王志兴 1
来源期刊	沉积学报
ISSN	1000-0550
出版年	2014
卷号	32 期号:3 页码:450-458
中文摘要	为探讨辫状河向曲流河转换的模式,以准噶尔盆地南缘头屯河剖面中侏罗统头屯河组为例,在层序地层学与沉积学的理论指导下,在层序划分与河流成因岩相类型确定的基础上,通过野外露头实测、剖面精细解剖及沉积观察描述,对头屯河组辫状河-曲流河(辫-曲)转换进行成因分析与特征总结,明确了辫-曲转换的控制因素,再现了辫-曲转换的沉积背景。研究表明:基准面旋回、物源供给、地形坡度及古气候4个方面控制着头屯河组辫-曲转换的过程。随着基准面的逐渐升高,物源供给的减弱,地形坡度的减缓,古气候环境炎热干旱,头屯河组逐渐由辫状河向曲流河转换。最终由头屯河组野外露头垂向序列,建立了辫-曲转换的局部沉积构型模式和区域沉积演化模式。
英文摘要	Under the guidance of sequence stratigraphy and sedimentology theory, detailed research on Toutunhe Formation in the Toutunhe outcrop, southern margin of Junggar Basin was carried out to discuss the model of braided river transform to meandering river. On the basis of the division of sequences and the determination of river-genesis lithofacies, by the field measuring, fine dissecting and sedimentation description and observation, braided river transform to meandering river (braided to meandering river) in Toutunhe Formation was analyzed and characteristics summarized, and the control factors and depositional setting of braided to meandering river were cleared. In this study, the process of braided to meandering river was controlled by base-level cycle, sedimentary source recharge, gradient and paleoclimate. As the base level rising, sedimentary source recharge decreasing, gradient slowing down and paleoclimate changing to hot-arid gradually, the river type change from braided river to meandering river. Eventually, by the vertical sequence of Toutunhe Formation, the local and regional depositional evolution models are built up.
中文关键词	辫状河 ; 曲流河 ; 辫-曲转换 ; 头屯河组 ; 准噶尔盆地
英文关键词	braided river meandering river braided to meandering river Toutunhe Formation Junggar Basin
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:5183647
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230886
作者单位	1.中国地质大学(北京)能源学院, 北京 100083, 中国; 2.中国石油勘探开发研究院西北分院, 兰州, 甘肃 730020, 中国
推荐引用方式 GB/T 7714	谭程鹏,于兴河,李胜利,等. 辫状河-曲流河转换模式探讨--以准噶尔盆地南缘头屯河组露头为例[J],2014,32(3):450-458.
APA	谭程鹏.,于兴河.,李胜利.,李顺利.,陈彬滔.,...&王志兴.(2014).辫状河-曲流河转换模式探讨--以准噶尔盆地南缘头屯河组露头为例.沉积学报,32(3),450-458.
MLA	谭程鹏,et al."辫状河-曲流河转换模式探讨--以准噶尔盆地南缘头屯河组露头为例".沉积学报 32.3(2014):450-458.