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The Base and Top of the Coral-rock in Barbados

Published online by Cambridge University Press:  01 May 2009

C. T. Trechmann
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Extract

1. The coral-rock commences nearly everywhere with a basal bed of varying thickness containing a fauna of pre-Pleistocene aspect among which the genus Haliotis (absent from these coasts at the present day), Pleurotomaria, Meiocardia, etc., are noticeable. This faunule may have lived at a depth of 700–1,000 feet.

2. The supposition that the southerly anticlines are a later uplift than the main portion of Barbados is supported by the absence of ravines, and the presence of post-coral-rock beds which occur as coastal veneers at low altitudes, and in greater thickness in the south-east corner near Whitehaven.

3. The south-east part of the island from Consett Point to Ragged Point has probably extended further seawards in comparatively recent times ; the series of converging faults and dislocations in the cliff sections suggest that the thrusts from the west or south-west may have been resisted by this part of the island.

4. The relative claims of fault-scarping or marine erosion in production of the rising terraces is discussed ; and new information regarding the thickness of the coral-rock at sea-level from a boring is detailed.

5. The finding of a faunule with Pliocene or possibly Miocene affinities at the base of the coral-rock puts the Oceanic series further back, into the Miocene.

Type
Original Articles
Information
Geological Magazine , Volume 74 , Issue 8 , August 1937 , pp. 337 - 359
Copyright
Copyright © Cambridge University Press 1937

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References

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page 356 note 1 The only previous reference to these beds I can find is Jukes-Browne and Harrison, Quart. Journ. Geol. Soc., xlvii, 1891, 217, where small corals and land shells are mentioned from Culpepper Island.Google Scholar