地球化学家关心的是化学元素在地球(和宇宙)中的分布及其在各种地质作用过程中的再分配。今天,他们更多的是关心各个地圈(大气圈、水圈、生物圈、地壳、地幔和地核)中所发生的物质的流动。越来越多的证据表明,在地球历史的发展过程中,地球的对流方式发生了改变,随之地壳的性质也发生了改变。 就地球的外部(包括我们的环境)而言,越来越多的证据表明,由于人类活动惊人的增加,这种物质 Geochemists are concerned with the distribution of chemical elements in the Earth (and the universe) and their redistribution in various geological processes. Today, they are more concerned with the flow of matter occurring in all the earth (atmospheric, hydrosphere, biosphere, crust, mantle and core). There is growing evidence that during the development of Earth’s history the Earth’s convection mode has changed and the nature of the crust has also changed. As far as the Earth’s exterior (including our environment) is concerned, there is growing evidence that, due to the astonishing increase in human activity, this substance