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Unusual polygenetic void and cave development in dolomitized Miocene chalks on Barbados, West Indies
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|Authors:||Sumrall, Jonathan B.; Mylroie, John E.; Machel, Hans G.|
|Author Affiliations:||Primary: |
Sam Houston State University, Department of Geography and Geology, Huntsville, TX, United States
Mississippi State University, United States
University of Alberta, Canada
|Volume Title:||International Journal of Speleology|
|Source:||International Journal of Speleology, 42(3), p.247-255. Publisher: Societa Speleologica Italiana, Bologna, Italy. ISSN: 0392-6672|
|Note:||In English. 38 refs.; illus., incl. 2 tables, geol. sketch maps|
|Summary:||Barbados provides an unusual case of polygenetic cave development within dolomitized chalks and marls of the Miocene Oceanics Group. These diagenetic processes are driven by a succession and interplay of tectonic uplift, fracturing, hypogene fluid injection, overprinting by mixing zone diagenesis, and mechanical and biological erosion in the current littoral zone. The significance of the voids and caves within the chalks on Barbados are: 1) these appear to be the first dissolution caves documented in dolomitized chalk, and 2) these features show a polygenetic origin documenting the diagenetic changes in lithology that allowed the development and preservation of these cave types.|
|Subjects:||Brittle deformation; Carbonate rocks; Carbonatization; Caves; Cenozoic; Chalk; Clastic rocks; Deformation; Diagenesis; Dolomitization; Erosion; Fracturing; Isotopes; Karstification; Marl; Miocene; Neogene; Permeability; Porosity; Sedimentary rocks; Solution features; Stable isotopes; Tectonics; Tertiary; Uplifts; Antilles; Barbados; Caribbean region; Lesser Antilles; West Indies; Conset Bay; Cove Bay; Culpepper Island; Gent's Bay; Oceanics Group; Pico Teneriffe; Speleogenesis|
|Coordinates:||N130000 N132000 W0592000 W0594500|
|Copyright Information:||GeoRef, Copyright 2020 American Geosciences Institute.|
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