Explanation: Tillite:

• It is the sedimentary rock formed out of deposits of glaciers.
• The Gondawana system of sediments from India is known to have its counterparts in six different landmasses of the Southern Hemisphere.
• At the base, the system has thick tillite indicating extensive and prolonged glaciation. Counterparts of this succession are found in Africa, Falkland Island, Madagascar, Antarctica and Australia.
• Overall resemblance of the Gondawana-type sediments clearly demonstrates that these landmasses had remarkably similar histories. The glacial tillite provides unambiguous evidence of palaeoclimates and also of drifting of continents.

Source: NCERT Class 11