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15问答网 > 同沉积褶皱的形成机制

同沉积褶皱的形成机制

自然形成的几种情况

2025-04-01 23:57:58

推荐回答（1个）

回答1：

就是基岩的变形与上覆沉积岩的沉积同时进行
背斜表现为水下隆起向斜表现为水下凹陷
可引起沉积层的岩相及厚度变化

厚度变化是最显著的比如背斜就是中间薄两翼厚

成因的话主要是基岩的差异性升降

比如如果有侵入作用的话顶部会产生隆起
隆起的同时又在水下接受沉积
这样就可以形成一个同沉积背斜

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