Links between paleoclimate and prehistorical human dispersal in Sri Lanka: a critical view Online publication date: Tue, 08-Nov-2016
by Amila Sandaruwan Ratnayake
Interdisciplinary Environmental Review (IER), Vol. 17, No. 3/4, 2016
Abstract: Sri Lanka represents rich sources of prehistorical archaeological data such as the earliest: 1) Homo sapiens fossils; 2) geometric microliths in South Asia. Climatic and geological events were considered with known archaeological evidences that provide opportunities for comparative research. The author proposed that climatic transition from Marine Isotope Stage (MIS) 4 to MIS 3 and MIS 3 to MIS 2 could probably identify as main traverse periods of prehistoric modern Homo sapiens into Sri Lanka. Glacial eustatic sea-level drops create possible prehistoric migration routes between India and Sri Lanka across the Palk Strait during a number of phases under semi-arid climate. The interglacial sea-level rise had opened supplementary routes towards tropical inland rainforests along river valleys. The early-middle to late Holocene sea-level highstands can be recognised as the latest geographic isolation of island Sri Lanka.
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