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TECTONIC AND ENVIRONMENTAL SIGNIFICANCE DEDUCED FROM GRAIN SIZE CHARACTERISTICS OF INCOMPACT SEDIMENT IN KUNLUN PASS BASIN

By 江樟焰, 伍永秋 and 崔之久

Abstract

通过对昆仑山垭口剖面270万a BP以来的连续沉积共计63个样品的粒度特征分析,划分出6个构造活动阶段.粒度参数曲线及概率累积曲线都清楚表明垭口盆地在270万~188万a BP和107万~72万a BP发生构造抬升活动,前者对应着"青藏运动",后者是"昆仑-黄河运动".还确定出垭口盆地古湖泊形成于225万a BP,消亡于80万a BP,其中216万~107 万a BP是古湖泊的发展期,107万~80 万a BP是消退期.教育部高校骨干教师资助计划中文核心期刊要目总览(PKU)中国科学引文数据库(CSCD)05692-6993

Topics: 粒度分析, 构造抬升运动, 垭口盆地, 古湖泊
Publisher: 北京师范大学学报自然科学版
Year: 2002
DOI identifier: 10.3321/j.issn:0476-0301.2002.05.023
OAI identifier: oai:localhost:20.500.11897/230285
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