Emergence and Evolution of Barbados

Emergence and Evolution of Barbados is a three-part analysis of the Quaternary geologic and geomorphologic evolution of the island of Barbados in the southeastern Caribbean. “Geology of Southeastern Barbados” assembles and integrates detailed observations into a complex 700 k.y. history of marine sculpting and riverine flooding processes. “Marine Terrace Evolution of Windward Barbados” revises the Quaternary stratigraphy of the island, describes the tectonics of emergence, and demonstrates that uplift rates vary by location. “Active Emergence, Chronology, and Limestone Facies in Southeastern Windward Barbados” is the first comprehensive study to integrate marine erosion and deposition with tectonic uplift rates. Major findings of this work are that Barbados’ Central Highlands are an erosional remnant, and that terraces originated principally by marine erosion rather than by reef construction.
Geology of southeastern Barbados Available to Purchase
*Deceased: 1933–2003; published posthumously.
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Published:June 09, 2021
ABSTRACT
This chapter presents geological documentation of Quaternary (and perhaps older) event histories of southeastern Barbados. The Barbados Limestone is herein formally defined. A time-stratigraphic division of the Barbados Limestone in southeastern Barbados and the properties of the stratigraphic units are presented. A major finding of this study is that the marine terraces originated wholly by marine erosion, not by reef construction, and evolved in stages over a long duration.
The hydrology and thickness data of the Barbados Limestone are discussed, and hypotheses on causes of thickness variations are given. The study domain is divided into seven areas that contain a continuous flight of nine marine terraces preserved in various partial sequences. Discussions of these key seven areas in southeastern Barbados are supported by geologic maps at large scale and cross sections. Sections with VE > 1 display limestone stratigraphy and facies over relatively large lengths. Sections with VE = 1 show true structural configurations over short lengths. Detailed observations and radio isotopic dating of the limestone units permit differentiation and correlation among them.
- absolute age
- actinides
- Antilles
- Barbados
- basins
- C-14
- carbon
- carbonate rocks
- Caribbean region
- Cenozoic
- clastic rocks
- correlation
- erosion features
- fluid flow
- ground water
- gullies
- hydrology
- isotope ratios
- isotopes
- karst
- Lesser Antilles
- limestone
- lithofacies
- marine environment
- marine terraces
- metals
- outcrops
- Quaternary
- radioactive isotopes
- reefs
- sedimentary basins
- sedimentary rocks
- shore features
- stratigraphic units
- tectonics
- thorium
- U-234/Th-230
- uranium
- West Indies