论亚洲东部的陆缘型壳体

来源期刊：中南大学学报(自然科学版)1999年第4期

论文作者：陈国达

文章页码：4 - 8

关键词：陆缘壳体;陆缘扩张;东亚

Key words：continental margin crustobody; continental margin spreading; East Asia

摘    要：在东亚大陆的东缘有3个陆缘型壳体， 分别称为东北亚、东亚及东南亚陆缘壳体．它们并非有些学者所认为的属于过渡型壳体，而实际是已演化达到高级成熟度的大陆型壳体，只是由于它们在形成以后， 因受东亚陆缘扩张运动的改造，以致被拉断伸展而厚度减薄，遂造成了似乎是过渡型地壳的假象．这些陆缘壳体已演化到地洼阶段，其中既有继承自历代前身的前地 槽型、地槽型及地台型矿床，又产生了自身的地洼型矿产．

Abstract: There are three continental margin region type crustobodies in the east margin of the continent of East Asia, called the Northeast, the East, and the Southeast Asia continental margin crustobodies. They are not transitional crustobodies as some scholars considered, but continental crust type crustobodies, which have evolved into a high-level stage―diwa stage. They take a false appearance of the transitional crustobodies, as their crust has been thinned by splitting and extension due to continental margin spreading of East Asia since they formed. Inside them, there are pregeosyncline-type, geosyncline-type, and platform-type deposits inherited from every predecessors, as well as diwa-type deposits themselves.