摘要
本文讨论了三峡地区地壳形变特征,认为黄陵断块相对于周缘的差异性运动是存在的,最大年速率可达5—10毫米。跨断层的短水准结果以继承性断层活动为主,年速率在毫米级。水平形变网揭示仙女山断裂带近年来表现为左旋压扭性,天阳坪断裂带以右旋滑动为主。
The features of crustal deformation are discussed in the region of Three Gorges in this paper. It is shown that differential motion of Huangling fault block with respect to its peripheral area exists, with a maximum rate of 5-10 mm in year. The results of short leveling across faults indicate that the activity of the faults is characterstic of inheritance, with an order of magnitude mm/a. The horizontal deformation nets show that the Xiannu Mountain fault zone has undergone left-lateral compression-shear movement, and the Tianyangping fault zone right-lateral slip in the recent years.
出处
《地震地质》
EI
CSCD
北大核心
1991年第3期249-257,共9页
Seismology and Geology
关键词
地壳
形变
活动
断裂带
长江三峡
Three Gorges of Changjiang River, Huangling fault block, Activity of the fault zone, Tectonic deformation
