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Evidence for late Quaternary sea level change around St. Helena island, south Atlantic
Journal article   Peer reviewed

Evidence for late Quaternary sea level change around St. Helena island, south Atlantic

Patrick Nunn
Catena, Vol.11(2-3), pp.187-195
1984
url
https://doi.org/10.1016/0341-8162(84)90008-0View
Published Version

Abstract

The evidence presented by DALY (1927) for a 3m raised shoreline along only the northwest coast of St. Helena and its implied absence elsewhere on the island is reappraised in the light of recent fieldwork. Low benches and abandoned caves have been found preserved on all coasts and are at a greater variety of elevations than supposed previously. The morphology of the benches and processes presently affecting them are described, and three types of raised beach identified. It is argued that the low level features represent three periods of marine erosion to 7.0-9.0 m, 3.0-4.5 m and 1.5-2.0 m, each attributable to a sea level relatively higher than the present one. © 1984.

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