沧海桑田是人人皆知的一个成语,同样也是地质变迁的真实写照。在地质历史的漫漫长河中,随着地壳板块的运动,或海底浮出水面,或陆地沉入海底,浮浮沉沉,变动不拘。本文作者杨怀辉作为一个爱好者,能从自己的偶然发现入手,通过孜孜不倦的努力,认识到了地质变迁的现象,是十分难能可贵的。科学本来并不神秘,也不高深,只要善于观察、勤于思考,就能获得许多意想不到的结果,这也许就是科学的本质吧! The sea is a well-known idiom, is also a true portrayal of geological changes. In the long course of geological history, with the movement of the crust plate, or the surface of the sea surface, or land submerged, floating ups and downs, change. As a lover, Yang Huai-hui, as an enthusiast, can start from his own accidental discoveries and through his tireless efforts recognize the phenomenon of geological changes, which is very commendable. Science has not been mysterious, nor profound, as long as good at observation, diligent in thinking, you can get a lot of unexpected results, which may be the essence of science!