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Deposition and sea level fluctuations during Miocene times, Grand Cayman, British West Indies
DownloadFall 2012
The Lower to Middle Miocene Cayman Formation on Grand Cayman, which is part of the Bluff Group, is at least 130 m thick. The mostly dolomitized Cayman Formation is herein divided into a ‘limestone member’ and ‘dolostone member’ as limestone is found in the formation in the central part of Grand...
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Diagenesis in limestone-dolostone successions after 1 million years of sea level fluctuations: A case study from Grand Cayman, British West Indies.
Download2016-01-01
Meteoric diagenesis in young marine carbonate sediments has commonly been linked to fluctuations in Quaternary glacio-eustatic sea levels. The extent to which these sea-level changes are recorded in these carbonate successions, however, remains questionable. This is amply demonstrated by the...
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Origin of Island Dolostone: Case Study of Cayman Formation (Miocene), Grand Cayman, British West Indies
DownloadFall 2017
Grand Cayman is located on an isolated fault block that is part of the Cayman Ridge that defines the southern margin of the North American Plate. The exposed part of the Oligocene to Pleistocene carbonate succession that forms the island comprises the Bluff Group (Brac Formation, Cayman...
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Spatial variations in the stoichiometry and geochemistry of Miocene dolomite from Grand Cayman: Implications for the origin of island dolostone.
Download2016-01-01
The Cayman Formation (Miocene), ~ 140 m thick on Grand Cayman, is incompletely dolomitized with the most of the dolomite restricted to the peripheral part of the island. These calcium-rich dolomites, with 50–60 mol%CaCO3 (%Ca), are divided into low-calcium dolomite (LCD, %Ca < 55%) and...
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Spring 2014
The Ironshore Formation, a Pleistocene limestone succession found on Grand Cayman, is formed of six unconformity-bounded units (A to F) that developed in response to transgressive-regressive cycles. Highstands led to deposition whereas lowstands led to diagenetic change in the earlier deposited...