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(上接第六期)(三)风化作用——观赏石形成的外动力地质作用风化作用是指暴露于地表或接近地表的岩石,在温度变化、水及水溶液的作用、大气及生物作用下发生的破坏作用,是地球表层在外力(太阳辐射、重力)作用下产生的地质作用,是构造运动后对岩石的再塑造(加工)过程。它改变着岩石的形状、质地、色彩、纹理,是观赏石的雕塑者和塑造者。
(Continued on the sixth period) (C) Weathering - the outside of the formation of ornamental stones Dynamic geology The weathering is exposed to the surface or near the surface of the rock, in the temperature changes, water and water solution, the role of the atmosphere and biological The destructive effect is the geological effect of the Earth’s surface under the action of external forces (solar radiation, gravity) and the remodeling (processing) of rocks after the tectonic movement. It changes the shape, texture, color and texture of the rock and is the sculptor and shaper of the ornamental stone.