Download Carbonate Environments and Sequences of Caicos Platform: by Harold R. Wanless, Jeffrey J. Dravis, Lenore P. Tedesco, PDF

By Harold R. Wanless, Jeffrey J. Dravis, Lenore P. Tedesco, Victor Rossinsky(auth.)

About The Product

Published through the yank Geophysical Union as a part of the Field journey Guidebooks Series.

The aim of this box expedition is to distinction the depositional environments and sedimentary facies of 2 carbonate platform settings: the south Florida carbonate peninsula and Caicos Platform. In doing this, we won't simply distinction how physiographic environment and weather strongly impact shallow-marine carbonate sedimentation yet, even as, current new substitute types of Bahamian sedimentation with direct software to the translation and prediction of similar historic carbonate facies and sequences.

In addition to containing a regular suite of Holocene sedimentary facies, Caicos Platform additionally shows tremendous outcropping Pleistocene marine and non-marine sequences, offering an extraordinary chance to determine how glossy facies are preserved in 3 dimensions.

To enable comparability of significant controls on shallow-marine carbonate sedimentation, this box day trip will commence through in short analyzing Holocene sedimentary environments and facies forming in south Florida below the impact of a non-oceanic, low-relief, shelf atmosphere and a wet weather.


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Additional info for Carbonate Environments and Sequences of Caicos Platform: Caicos, British West Indies to Miami, Florida, July 20-26, 1989

Example text

Mangrove prop roots and pneumatophores commonly have a growth of Scytonema over a vertical zone of several centimeters. This zone correlates with the elevation of the Scytonema mats on the ground surface. In addition, Hardie (1977) found that the Scytonema level on the channel levee backslope and in the inner algal marsh of Andros were at the same elevation. When buried, the Scytonema mat gradually decomposes to an organic-rich sediment layer. Five months after Hurricane Kate, the stench released when walking through the outer marsh was overwhelming.

Where burrowers, roots or intraclasts cause irregularities, the mat and associated sediment-trapped laminae will drape and accentuate irregularities (Hardie, 1977). Schizothrix is also the pioneer colonizer of a new sediment surface. Where Hurricane Kate (November, 1985) deposited a sediment layer greater than several millimeters in thickness on the tidal flat, the previous algal community was killed. Schizothrix mats were still not present two months after the event but had recolonized essentially the entire new surface five months after the event.

STABILIZED CONCENTRIC . ::ij AND LUMPS ~ HOLOCENE ISLANDS • PLEISTOCENE ISLANDS DBASIN FLOOD TIDAL DELTAS MARINE SAND BELTS Shoal, Caicos Platform; Figs. 35h and 36-2). Third, extensive oolitic tidal bar belts form in areas of strong tidal flow at the ends of deep ocean re-entrants (southern end of the Tongue of the Ocean and the northern end of Exuma Sound; Figs. 7 and 36-3). Fourth, ooids can form on wave-agitated beaches and nearshore zones and spread to adjacent environments by onshore storms and longshore currents (Joulter's Cay, Great Bahama Bank; Long Bay, Providenciales and east West Caicos, Caicos Platform; Figs.

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