Mrw. Johnson, VOLUME BALANCE OF EROSIONAL LOSS AND SEDIMENT DEPOSITION RELATED TO HIMALAYAN UPLIFTS, Journal of the Geological Society, 151, 1994, pp. 217-220
The volume of sediment in the foreland basins, deltas and fans which a
re a consequence or the collision of India and Asia appears to require
the removal or a vertical section c.35 km high if the sediments were
entirely derived from the Himalaya. It is argued that this is implausi
ble and that it is likely that the Himalayan hinterland (e.g. Karakora
m and Tibet) was an important source of sediment prior to c. 20 Ma whe
n significant Himalayan uplift commenced.