Before the early 1990s geologists knew only that powerful movements of the earth's crust forged South America's Andes and towering mountain peaks elsewhere (including the Himalayas and the Alps) primarily between about 23 million and five million years ag
Before the early 1990s geologists knew only that powerful movements of the earth's crust forged South America's Andes and towering mountain peaks elsewhere (including the Himalayas and the Alps) primarily between about 23 million and five million years ag
在1990年代初期以前，地质学家只知道地壳板块的剧烈运动，推挤出南美洲的安地斯山，以及其他地方的高耸山峰（包括喜马拉雅山及阿尔卑斯山），时间主要是在2300~500万年前，这段时期就是地球历史上的中新世。