印度古大陆二亿年前地处南半球位置,约在南纬50°—60°之间。自1亿4千万年前的晚侏罗世印度古大陆从冈瓦纳大陆完全分离以来到4千万年前的始新世中期与中国大陆接触碰撞为止,经历1亿多年,移动近万公里,大约以年平均10厘米速度向北移动。这是一个很大的速度,比其他任何大陆都移动得快。印度古大陆为什么移动那么快呢? 大陆移动是受力的驱使。现代海底扩张和板块构造学说认为,岩石圈板块(包括大洋和大陆)下面存在地幔对流。高温低密度地幔物质由洋脊涌出后,推动旧大洋海底 Ancient Indian continent 200 million years ago is located in the southern hemisphere, about latitude between 50 ° -60 °. Since the Late Jurassic Paleolithic of 140 million years ago completely separated from the mainland of Gondwana until the mid-Eocene contact of 40 million years ago with mainland China, after more than 100 million years of moving, Million kilometers, moving about northward with an average annual speed of 10 centimeters. This is a great speed, moving faster than any other continent. Why is the ancient Indian continent moving so fast? The mainland is driven by force. Modern seafloor expansion and plate tectonics say that there is mantle convection beneath the lithosphere (including the ocean and the continent). High-temperature and low-density mantle material erupting from the ocean ridge pushed the old ocean floor