| 洞庭盆地第四纪构造活动特征 |
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| 引用本文： | 梁杏,张人权,皮建高,张国梁,孙锡良. 洞庭盆地第四纪构造活动特征[J]. 地质科技情报, 2001, 20(2): 11-14 |
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| 作者姓名： | 梁杏 张人权 皮建高 张国梁 孙锡良 |
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| 作者单位： | 1. 中国地质大学工程学院,
2. 湖南省地勘局水文地质工程地质二队, |
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| 基金项目： | 国土资源部科技资助项目 ( 992 0 0 8)，国土资源部地质调查项目 ( 199912 3 0 0 0 3 0 14专题 2 ) |
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| 摘 要： | 利用沉积等厚线图，分析得出的洞庭盆地第四纪构造活动特征如下：北北东及近东西向两组断裂将盆地切割为一系列断块；盆地西部为箕状断块，东部为箕状凹陷、早、中更新世为盆地的断陷阶段，晚更新世以来进入坳陷阶段；第四纪以来构造沉降速率呈加速度增强；构造活动的时空变化控制着洞庭湖的演变。
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| 关 键 词： | 洞庭盆地 第四纪 新构造运动 构造沉降 等厚线图 时空变化 |
| 文章编号： | 1000-7849(2001)02-0011-04 |
CHARACTERISTICS OF TECTONIC MOVEMENT OF DONGTING BASIN IN THE QUATERNARY PERIOD |
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| Liang Xing Zhang Renquan Pi Jiangao Zhang Guoliang Sun Xiliang. CHARACTERISTICS OF TECTONIC MOVEMENT OF DONGTING BASIN IN THE QUATERNARY PERIOD[J]. Geological Science and Technology Information, 2001, 20(2): 11-14 |
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| Authors: | Liang Xing Zhang Renquan Pi Jiangao Zhang Guoliang Sun Xiliang |
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| Affiliation: | Liang Xing 1 Zhang Renquan 1 Pi Jiangao 2 Zhang Guoliang 2 Sun Xiliang 2 |
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| Abstract: | Based on the analysis of isopach maps,the characteristics of tectonic movement of Dongting Basin in the Quaternary are concluded as the following:Dongting Basin has been cut into a series of fault blocks by two sets of faults in the directions of NNE and or nearly EW;there are dustpan like fault blocks in the west and dustpan like depressed blocks in the eastof Dongting Basin;Dongting Basin had been a fault basin in the Early and Middle Pleistocene,and had become a depressed basin since the Late Pleistocene;the tectonic subsidence rate has been accelerating since the beginning of the Quaternary;and the evolution of Dongting Lake has been controlled by time and space distribution of tectonic movement. |
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| Keywords: | Dongting Basin Quaternary Period neotectonic movement tectonic subsidence isopach map |
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