俯冲断层(underthrust)是指下盘为主动盘的逆冲断层。作为俯冲断层,随着运动的进行,需要负起的上盘断块的重量会愈来愈大,因此,大多数俯冲断层不会延伸很远,位移量也不会太大。
这种类型的断层通常出现在挤压区域,比如像日本那样的,板块向另一板块之下俯冲的区域。
This type of faulting is common in areas of compression, such as regions where one plate is being subducted under another as in Japan.
鄂皖边界大别南缘主俯冲边界断层的存在以及扬子板块前陆盆地盖层大型薄皮构造,揭示扬子板块向大别造山带之下的A型俯冲。
The main A-type subduction fault and large scale thin-skinned tectonics clearly reveal that the Yangtze Plate subsides towards Dabie orogenic belt.
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