Lithofacies of the Pliocene-Pleistocene Lucayan Limestone, Great Abaco Island, Little Bahama Bank

<p>Petrographic and sedimentologic analyses of eleven shallow subsurface cores (3 to 19 meters in length) from the Lucayan Limestone where it occurs along northeastern Great Abaco Island (little Bahama Bank) are used to delineate five carbonate lithofacies. The most prevalent lithofacies is a mottled, nonskeletal, peloidal packstone to grainstone. Other lithofacies include a rudstone, a laminated nonskeletal grainstone, a crossbedded grainstone and a mudstone-wackestone.</p> <p>Cementation varies from poor to very well cemented core intervals. Cements observed included equant granular, equant blocky, drusy, meniscus, and needle fiber "whisker" cements. These cements reflect a variety of diagenetic environments such as the vadose, meteoric, and phreatic zones. It is not possible to use the cement types to define past sea level positions. However, the cement types indicate periods of subaerial exposure that may have been a result of sea level fluctuations.</p> <p>The near surface carbonates of northeastern Great Abaco Island can be correlated with the upper Lucayan Limestone found on Little Bahama Bank, northwestern Great Bahama Bank and in the southeastern Bahamas</p>

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Ocean & Earth Sciences

Year dc:date.available

1993

Author dc:creator

• Mullen, Mary K.

Contributors dc:contributor

• Dennis A. Darby
• G. Richard Whittecar
• Stephen J. Culver

• Lithafacies
• Limestone
• Bahamas
• Analysis
• Geology
• Paleontology

Statement dc:rights

• <p>In Copyright. URI: <a href="http://rightsstatements.org/vocab/InC/1.0/">http://rightsstatements.org/vocab/InC/1.0/</a> This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).</p>

Repository record dc:identifier

https://digitalcommons.odu.edu/oeas_etds/100

OAI identifier oai:identifier

oai:digitalcommons.odu.edu:oeas_etds-1106