古地理学报2017，Vol.19Issue(6)：1037-1048,12.DOI:10.7605/gdlxb.2017.06.080
新疆焉耆盆地开都河不同河型段砂砾质沉积特征与差异分析
Depositional characteristics and variations of different channel deposits in the Kaidu River of Yanqi Basin, Xinjiang
摘要
Abstract
The Kaidu River is a typical perennial internal river with abundant sediment located in the Yanqi Basin under arid climate condition.The catchment of the river is the Tianshan Mountain and the river drains into the Bostan Lake.A complete range of different channel deposits are recognized from source to sink of the associated depositional system,including straight,meandering,braided and anastomosing channel patterns.Depositional facies,depositional processes and heavy mineral distributions were documented and analyzed statistically in relation with transport distance.The result shows that channel patterns and sedimentary facies are controlled by climate,composition of sediments,geography and slope.The grain size of sediments shows strong decreasing trend over transport distance.These results promoted the development of a facies models for the Kaidu River and the Bostan Lake.Since the proposed model incorporates quantitative analysis of the sediments and facies,it's promising to provide a modern analog for the interpretation of its ancient counterparts.关键词
焉耆盆地/开都河/河流沉积/砾石搬运距离/沉积相Key words
Yanqi Basin/Kaidu River/fluvial deposit/gravel-transport distance/sedimentary facies分类
天文与地球科学引用本文复制引用
石雨昕,高志勇,周川闽,周正龙..新疆焉耆盆地开都河不同河型段砂砾质沉积特征与差异分析[J].古地理学报,2017,19(6):1037-1048,12.基金项目
国家科技重大专项(编号:2016ZX05003-001),中国石油股份公司课题(编号:2016B-0302,2014E-3209)联合资助.[Co-funded by the National Science and Technology Major Projects of China(No.2016ZX05003-001) and Projects of China National Petroleum Co.(Nos.2016B-0302,2014E-3209)] （编号:2016ZX05003-001）
