地理研究 ›› 1992, Vol. 11 ›› Issue (4): 57-67.doi: 10.11821/yj1992040007

• 论文 • 上一篇    下一篇

新疆叶城地区第四纪粗砂砾层沉积及其与昆仑山隆起的关系*

朱立平   

  1. 中国科学院、国家计划委员会地理研究所
  • 出版日期:1992-12-15 发布日期:1992-12-15
  • 基金资助:
    * 国家自然科学基金

THE QUATERNARY COARSE SAND-GRAVELS DEPOSITS IN YECHENG, XINJIANG AND THE CORRELATIONS WITH THE UPRISING OF KUNLUN MOUNTAINS

Zhu Liping   

  1. Institute of geography, Chinese Academy of Sciences and State Planning Commission of the People's Republic of China
  • Online:1992-12-15 Published:1992-12-15

摘要: 采用粒度分析、岩石岩性分析、砾石统计等方法,本文认为新疆叶城地区第四纪粗砂砾层为冲积-洪积类型。沉积物的组分结构及其空间分布呈带状变化规律。沉积物分布受昆仑山强烈隆起的控制,反映了昆仑山隆起的时代和阶段性。

关键词: 第四纪粗砂砾层, 昆仑山隆起, 新疆叶城地区

Abstract: A series of Quaternary sands and gravels are well distributed on the northern foot of West Kunlun Mountains in Yecheng area oi' Xinjiang.Based upou their appearance and composition of landforms,these deposits in different ages occur in zonation.The Xiyu Conglomerate (Q1) of early pleistocene,conformably contacted with the red sandstone and siltstone of pliocene at the front of the mountains,is drawn and intensively deformed with the upheaval of the Kunlun Mountains.Wusu Group (Q2),a group of grayish sand-gravels unconformably covered on the pliocene and lower pleistocene strata,extended toward the front of the mountains to form the high pluvial platfrom.The lower pluvial platforms are constructed of upper pleistocene strata which spread outside the high pluvial platforms and in the valleys outside the mountains.They have been weathered to form thesurface of conglomerate-Gobi.In addition,aeolian sandy loess spread fromthe periphery of Taglamagan Desert to the high mountains below the elevation of 4,200m asl.