今天我讲的题目是构造与地球化学。这里所讲的构造是广义的,它既包括具体的构造、大地构造,又包括构造地质。下面,我想从五个方面谈谈构造与地球化学问题。一、地球化学是解决全球性重大地学理论课题必不可少的手段地学发展到今天,已取得很多成就。当前一些重大的全球性地学课题,包括构造在内,必须借助于地球化学。例如板块构造,它是最近二十年地学理论的一个重大突破。板块构造的前身是洋底扩张,它是建 Today, my topic is tectonics and geochemistry. The structure here is broad, it includes both the specific structure, the earth structure, but also the geological structure. Next, I want to talk about structural and geochemical issues from five aspects. First, geochemistry is an indispensable tool for solving the major global geo-theoretical issues. To date, many achievements have been made in geology. Some major current global geosciences, including tectonics, must rely on geochemistry. For example, plate tectonics, which is a major breakthrough in the theory of geology over the past two decades. The predecessor of plate tectonics is the ocean floor expansion, which is built