The sedimentary facies of sedimentary bodies from debris flow in the late pleistocene in Wudu area

Tang Yongyi; Cai Xiangxing

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The sedimentary facies of sedimentary bodies from debris flow in the late pleistocene in Wudu area

- The sedimentary facies of sedimentary bodies from debris flow in the late pleistocene in Wudu area
- Bulletin of Soiland Water Conservation Vol. 8, Issue 6, Pages: 36-44(1989)
- 作者机构：
  
  中国科学院兰州冰川冻土研究所
- 作者简介：
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- Published：1989
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Tang Yongyi, Cai Xiangxing. The sedimentary facies of sedimentary bodies from debris flow in the late pleistocene in Wudu area[J]. Bulletin of Soiland Water Conservation, 1989, 8(6): 36-44.
DOI：

Tang Yongyi, Cai Xiangxing. The sedimentary facies of sedimentary bodies from debris flow in the late pleistocene in Wudu area[J]. Bulletin of Soiland Water Conservation, 1989, 8(6): 36-44. DOI：

摘要

本文以沉积学的方法

对武都晚更新世泥石流堆积体的地层剖面进行了划分对比

并建立了该期泥石流堆积体的综合地质柱状图

并较详细地研究了它们的沉积相特征。认为武都本期泥石流堆积体

是由与泥石流作用有关的泥流型洪积相、水流型洪积相以及与泥石流作用无关的冲积沉积相和黄土状土沉积相所组成。由此推断了它们的形成环境

探讨了泥石流发生、停歇与新构造作用及气候的关系

从而进一步划分了本次泥石流作用期的4次作用阶段。

Abstract

By stratigraphic means

the paper makes division and comparison tothe geological sections from sedimentary bodies of debris flow in thelate pleistocene in Wudu

establishing synthetic geological columna sec-tions of the debris flow of this period

it also analyses the characteristicsof sedimentary facies in detail. The sedimentary bodies of debris flow inthe period are composed of mud flow facies

sheet flow facies

whichbear relationship on the action of debris flow

and alluvial facies andloess soil facies which have nothing to do with the action of the debrisflow.From this the paper deduces the forming environment of them

ex-plores the relationship among the occurence

ceasing

new tectonism andclimate of the debris flow

and then the action period of debris flow isdivided into four action phases.

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