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简述横弯褶皱的一般特征。
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简述横弯褶皱的一般特征。
时间：2022-01-05 04:31
关键词：
构造地质学
地球科学
大学试题
理学
答案解析
<p> ①横弯褶皱的岩层出于侧向拉伸装大，所以组成褶皱的每一单层都不存在中和面<br> ②由于垂向力对顶部岩层的挤压作用，拉伸作用最强，使物质由顶部向两翼流动，顶部岩层变薄，而两翼岩层加厚形成顶薄褶皱<br> ③在物质流动过程中，韧性强的岩层，在翼部形成轴面外倾斜的层间褶皱，轴面与层面所夹锐角指向邻近层相对滑动方向，与纵弯褶皱作用形成的层间褶皱相反<br> ④由于拉伸作用，在褶皱的顶部可能形成不同方位的张性断裂</p>
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