[1]刘耕年,李建江,鞠远江,等.高容重黏性泥石流沉积的组成和构造反映的搬运和沉积动力特征[J].水土保持研究,2003,10(03):1-2,7.
　LIU Geng-nian,LI Jian-jiang,JU Yuan-jiang,et al.Sedimentary Composition and Structure Showing the Transportation and Deposition Processes of High Density Viscous Debris Flows[J].Research of Soil and Water Conservation,2003,10(03):1-2,7.
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高容重黏性泥石流沉积的组成和构造反映的搬运和沉积动力特征

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 10 期数: 2003年03期 页码: 1-2,7 栏目: 出版日期: 1900-01-01
Title:
Sedimentary Composition and Structure Showing the Transportation and Deposition Processes of High Density Viscous Debris Flows
作者:
刘耕年, 李建江, 鞠远江, 崔之久
北京大学环境学院资源与环境地理系, 北京, 100871
Author(s):
LIU Geng-nian, LI Jian-jiang, JU Yuan-jiang, CUI Zhi-jiu
Geography Department, College of Environmental Sciences, Peking University, Beijing, 100871, China
关键词:
高容重; 黏性; 泥石流; 沉积
Keywords:
high density; viscous; debris flow; deposit
分类号:
P642.23
摘要:
通过地貌形态、粒度分析和定向样品切片分析等资料探讨查菁沟泥石流的沉积特征及其反映的泥石流动静力学特征.砾石的含量下游较少,砂的含量由下游向上游减少,大于4mm碎屑向顶层减少,黏土相反.容重总平均值由下游向上游逐渐增加,横剖面中容重有由下向上的增加的趋势.定向切片的纵剖面中粗大碎屑反映出由底向顶倾角增大的特点,优势倾向上游;横剖面显示主流线两侧的碎屑以向主流线(向内)倾斜为主,构成一种“向心状”构造.沉积主体表现为混杂构造,底部多表现为纹层理构造,表现出底部层流,上部塞流特点.
Abstract:
Landforms,grain sizes and structure observation by microscope shows that deposits of high density viscous debris flow reflect the behavior of basal laminar flow and upper plunger flow.There are more gravels and sands in the down stream than in upper stream.Clay content decreases from down stream to upper stream.The volume content increase from down stream to upper stream.Sedimentary structures show regular fabric in longitudinal and transverse section.

参考文献/References:

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备注/Memo

收稿日期:2003-4-25。
基金项目:国家自然科学基金资助(90102016,40271014).
作者简介:刘耕年(1962- ),男,北京大学环境学院教授,从事地貌学与第四纪地质学的教学和科研工作.

更新日期/Last Update: 1900-01-01