1、板块构造,Plate Tectonics,地质基础知识回顾板块构造理论,从“大陆漂移”到“海底扩张”,地质基础知识回顾板块构造理论,Alfred Lothar Wegener (1880-1930),“大陆漂移”,南美与非洲大陆外形的相合性,Coastline fit (even better using edges of continental shelves),观察:,“泛大陆”及其解体,古生物分布证据,Pennsylvania-Permian rocks identical for Gondwana continents Pennsylvanian through Jurassic ro
2、ck sequences very similar,地层分布证据,造山带分布证据,Mountain belts on one continent match up with another.,Appalachians (eastern US),British Isles, Scandinavia,Similar rock structure and age:,古气候证据,Similar geologic and biologic features have been found in common on different continents with very different pres
3、ent-day climates,对同种生物在不同大陆上分布的可能解释,Alfred Lothar Wegener (1880-1930),大陆漂移的驱动力: 潮汐,地质基础知识回顾板块构造理论,Glomar Challenger,JOIDES Resolution,Harry Hammond Hess:“海底扩张”,地质基础知识回顾板块构造理论,地质基础知识回顾板块构造理论,地质基础知识回顾板块构造理论,岩石的磁化,地质基础知识回顾板块构造理论,地质基础知识回顾板块构造理论,Plate Boundaries,地质基础知识回顾板块构造理论,板块边界类型,地质基础知识回顾板块构造理论,地质基础知识回顾板块构造理论,地质基础知识回顾板块构造理论,Aerial view of the San Andreas fault,地质基础知识回顾板块构造理论,具有讽刺意味的是,我们直到目前仍无法完满解释Wegener 在70多年前所遇到的同样问题板块运动的“驱动力”问题.,
