序言 近十多年来,大陆漂移、海底扩张和板块构造学说从地学的各个领域和现代技术成就上得到了不断的印证和补充,因而在国外称得上地学中最富有生命力的理论。有关板块构造方面的论文有如暴风雪,据不完全统计,近五年来,世界各国发表的板块构造各个领域的论文,平均每年不下三、四千篇, Preface In the past decade or so, the doctrines of continental drift, seafloor expansion and plate tectonics have been constantly confirmed and supplemented in various fields of geosciences and achievements in modern technology. Therefore, they are entitled to the most viable theory in geosciences abroad. According to incomplete statistics, papers published in various parts of the world published in various countries in the world in the recent five years have seen an average of no fewer than three or four thousand articles a year.