试论冈瓦纳古陆的形成和裂解

本文探讨了冈瓦纳古陆的形成和裂解的问题。首先,考虑地球的形成存在过天文演化和地质演化的阶段。在天文演化阶段,冈瓦纳古陆形成于南极;在地质演化阶段,南半球表层液核流体获得向东北的速度,同时导致了冈瓦纳古陆的分裂和漂移。漂移大陆块的北边缘到达表层液核流体辐合带的位置,这一辐合带沿地中海、青藏高原南边缘、斐济、加勒比海、地中海一线。大陆块到达低纬后又经过了东西方向的漂移,并且形成了洋中脊. 

ON THE FORMATION AND SPLITTING OF GONDWANALAND

The formation and splitting of Gondwana land is still open to discussion.First,in this paper the Earth is considered to have involved the astronomical evolution and geological evolution.During the period of the astronomical evolution the Gondwana land formed at the south pole and high latitude areas.At the early stage of geological evolution the horizontal motion of magma might have driven the original crust to split and its northern edge might have drifted to where the outer-core liquid converged i.e.along the small circle from the Mediterranean Sea,southern edge of Qinghai-Tibet Plateau,Fiji,to the Caribbean Sea.On reaching low Latitudes,the splitted continents began to drift in the east-west direction and thus formed the mid-ocean ridges.