Explanation:

Meghalaya Plateau
The peninsular plateau extends further east beyond the Rajmahal hills to from Meghalaya or the Shillong plateau.Garo-Rajmahal Gap separates this plateau from the main block.This gap was formed by down-faulting (normal fault: a block of earth slides downwards). It was later filled by sediments deposited by the Ganga and Brahmaputa.The plateau is formed by Archaean quartzites, shales and schists.The plateau slopes down to Brahmaputra valley in the north and the Surma and Meghna valleys in the south.Its western boundary more or less coincides with the Bangladesh border.
The western, central and the eastern parts of the plateau are known as the Garo Hills (900 m), the Khasi-Jaintia Hills (1,500 m) and the Mikir Hills (700 m).Shillong (1,961 m) is the highest point of the plateau.Because of excessive rainfall the soil is severely leached and barren. Laterite soil is found in the region.