Evidences

Evidences that can be used to support the existence of the Gondwana supercontinent include geology, climate, fauna and flora, etc.

In this section, we highlight these evidences.

Geology

Gondwana comprised a mosaic of many highly varied Precambrian terrains, separated by late Proterozoic-early Paleozoic orogenic belts; the early history of these belts, particularly the transcontinental belts of Africa (named the Pan-African belts) can be traced back in time to about 1000 Ma. These belts can be traced from Africa into South America, Antarctica and Australia. The dominant tectonic activity of these belts took place between 800-450 million years ago. It is thought by many geologists that these belts contain suture zones along which various types of late-Paleozoic ocean basins closed. According to these scientists the orogenic belts may thus represent welds between large and small scale fragments that collided in the late Proterozoic-early Paleozoic and fused together to form Gondwana. It has long been observed that large regions of the intervening Precambrian terrains have undergone extensive thermal rejuvenation between about 600-450 million years ago: it is probable that this period coincides with the culmination of collisions, welding and rapid uplift of the building blocks of Gondwana (www.searchanddiscovery.net/documents/97019/index.htm).