| 元谋断裂北段的新活动与地震危险程度 |
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| 引用本文： | 韩慕康,柴天俊.元谋断裂北段的新活动与地震危险程度[J].地震地质,1979,1(1):56. |
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| 作者姓名： | 韩慕康 柴天俊 |
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| 作者单位： | 北京大学地质系
(韩慕康)，云南省地震局(柴天俊) |
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| 摘 要： | 元谋断裂有强烈、复杂和多阶段的新活动,表现西盘先断陷成湖,后回升成阶地,并在东盘水平挤压下时而顺扭、时而反扭,使阶地变形、错位、掀斜,并在湖积中形成轴向或走向与主干断裂成向南或向北锐角相交的新褶皱与断层,构成新“人”字形构造。 此带地处滇西南北带中段,灾害性地震危情不如南、北两端严重
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| 关 键 词： | 元谋盆地 湖积层 新活动 主干断裂 地震危险 龙川江 断陷盆地 早更新世 背斜隆起 金沙江 |
NEO-TECTONIC MOVEMENTS IN THE NORTHERN SECTION OF THE YUANMOU FAULT ZONE, YUNNAN PROVINCE AND THE EARTHQUAKE RISK INVOLVED |
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| Abstract: | Neo-tectonic movements in the northern section of the Yuanmou fault zone, Yunnan Prov. are very well reflected by the modification of landforms and the deformation of the early Pleistocene lacustrine strata.1. A narrow, deep trough-basin (the Yuanmou Basin) formed on the western side of the major Yuanmou fault was at first filled with Q1 lacustrine deposits of more than 400m thick, and then uplifted into a westward tilting high lake terrace. Subsequently 5 lower and lower river terraces appeared |
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