Heicigou gold deposit is regionally located at the western section of the southern Qilian geosyncline of QinlingQilianKunlunshan mountainfold system.
黑刺沟金矿位于秦祁昆地槽褶皱系南祁连地向斜构造带的西段。
2
A third type of mountain may be formed as a result of volcanic activity which occurs in regions of active foldmountain 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。
3
A third type of mountain may be formed as aresult of volcanic activity which occurs in regions of active foldmountain belts, such as in the Cascade Range of western North America.