现代地质2016，Vol.30Issue(2)：485-493,9.
滹沱河古河道剖面粒度参数特征及沉积环境
Grain Size Character and Sedimentary Environment of Hutuo River Paleochannel Section
摘要
Abstract
Hutuo River has dried up and cut off perennially because of climate drought since the mid-1 970s. The river ecosystem has suffered severe damage.It is the basis of river ecosystem recovery and wetland ecologi-cal environment reconstruction to study the shallowly buried paleochannel of Hutuo River.In this paper,the sedimentary facies of Hutuo River paleochannel are studied using the methods of grain size analysis.And the sedimentary environmental change process of the study area since 30 ka.B.P.is discussed on the basis of high density sampling and detailed data.The results show that the paleochannel section is composed of two sedimen-tary segments with the boundary of 1 ,060 cm.The lower segment is deposited from 29.4 to 26.9 ka.B.P.. Limnetic facies sediments are developed in the study area.The upper segment is deposited from 26.9 ka.B.P. to the present.Fluvial facies sediments are developed in this stage,including two kinds of fluvial subfacies.The grain size characters are changed between the two segments correspondingly.关键词
古河道/粒度/沉积环境/滹沱河Key words
paleochannel/grain size/sedimentary environment/Hutuo River分类
天文与地球科学引用本文复制引用
赵红梅,刘林敬,赵华,毕志伟,王利康,宋磊,王成敏,杨劲松..滹沱河古河道剖面粒度参数特征及沉积环境[J].现代地质,2016,30(2):485-493,9.基金项目
国土资源部公益性行业科研专项经费课题（201211079－01）；国家自然科学基金项目（41302191）。 （）
