A third type of mountain may be formed as a result of volcanic activity which occurs in regions of active fold mountain belts, such as in the Cascade Range of western North America.
第三种类型的山可能是由于火山活动形成的，一般发生在活动性褶皱带地区，如北美西部的喀斯喀特山脉。
The continental crust is much thicker than average beneath the great mountain belts .
在高山地带下面的大陆地壳，其厚度要比平均厚度大得多。
An interaction of lithospheric plates that can result in the formation of mountain belts and subduction zones.
一种可导致形成造山带和俯冲带的岩石圈板块间的相互作用。
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