Earth's internal heat, fueled by radioactivity, provides the energy for plate tectonics and continental drift, mountain building, and earthquakes.

地球内部因放射而产生的热量为板块运动、大陆漂移、造山运动和地震提供了能量。

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Some very ancient sediments were no longer recognizable, having been converted to igneous and metamorphic rocks in the course of mountain building.

在造山的过程中，一些非常古老的沉积物已被转化为火成岩和变质岩，已经无法辨认了。

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So Wedging was the mechanism for mountain building in the Qinling orogen.

楔入构造活动是秦岭造山带的成山模型。

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Such is the variety of shapes and types, present through at least four mountain building periods, that visitors and locals alike cannot but marvel at the magnificient colours and structures visible around the coast of the Global Geopark.

UNESCO: Global Geoparks

It is also expanding into the second floor of its building in Mountain View, Calif.

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It is building reservoirs on high-mountain lake areas to ensure water supplies for the locals and this activity is likely to continue until well into 2013.

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