Ramar Sethu issue: “No geological evidence”
Staff Reporter
TIRUCHI: There is absolutely no geological evidence to indicate that the submerged formation between Rameswaram and Mannar is a man-made structure, according to K. Anbarasu, Research Scholar, Post Graduate and Research Department of Geology, National College, Tiruchi.
The underwater features generally called shoals observed between Rameswaram and Mannar are nothing but continuation of depositional formations akin to the 21 small islands found parallel to the coast formed by the deposition of sands due to low energy wave movement. The deposition has also been facilitated by the alongshore drift of sediments by littoral or long shore currents, explained Dr. Anbarasu, who has compiled a report on the coastline of Tamil Nadu as part of a project funded by the Department of Ocean Development, Government of India.
Atlas
He has also brought out the Atlas of Coastal Gemorophology of India. Deposition is a common feature observed in several coasts of the earth wherever the low wave energy environment is found, and there is nothing unusual in the occurrence of shoals in a narrow water region like Palk Strait, where currents get deflected forming low wave energy environment and with a source – usually rivers. Vaigai and Tambrabarani rivers supply sediments to the longshore currents for onward drift.
The northern part of Rameswaram island is made up of dead and live corals overlain by recent sediments, whereas the southern part is like a spit extending towards Mannar for about fifteen kilometres. It is this extension, a naturally formed shoal, that is observed underwater in the Palk Strait, and has nothing to do with ‘Ramar Bridge’.
But for the remnants of Dhanuskodi that was washed away by a heavy storm in 1963, there is no evidence for the ‘Ramar Bridge’. Had the ‘Ramar Bridge’ existed in the region, it should have been the extension of the Dhanuskodi spit and the remnants of it should have been observed. On the other side of Palk Strait in Sri Lanka also, no evidence of ‘Ramar Bridge’ has been noted.
The details of marine processes and sedimentation can be explained only by geologists and not by archaeologists, though at times the latter conduct underwater survey for studying submerged remnants of ancient structures. Going by records, no underwater archaeological survey has been conducted along the coast of Rameswaram, Dr. Anbarasu said.
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