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|a Transgressive Recycling Produces Organic-Rich Carbonate Muds |h [electronic resource]. |
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|a Please contact the owning institution for licensing and permissions. It is the user's responsibility to ensure use does not violate any third party rights. |
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|a Typical carbonate muds in the coastal bays of south Florida
contain 2-10% particulate organics. Carbonate muds formed in
response to historical and Holocene transgressive recycling
contain 20-40% organics.
Historical recycling is in response to a rapid sea level rise (25cm)
that began about 1930. Organic-rich carbonates are rapidly filling
lake and lagoon depressions in the coastal complex of
Northwestern Florida Bay, Cape Sable, Mangrove Coast and
10,000 Islands as they are opening to increased sediment input.
The organic component is composed of varying mixtures of
algal/cyanobacterial, mangrove root peat, and freshwater marsh
sedge detritus depending on the particulate organic matter sources
at a site. Algal/cyanobacterial organics are provided by mats
growing on recycled deposits, from recycling older carbonate and
organic muds, and from diatom blooms in response to higher
nutrients in the transgressive water column. Mangrove organics
are provided by both shore erosion of mangrove peats and posthurricane
decay of peats beneath collapsed mangrove forests.
Freshwater sedge organics are provided by collapse and decay of
freshwater marsh peats as a result of saline water intrusion.
Organic composition in carbonate muds varies both along the
Florida Bay, Mangrove Coast, and 10,000 Islands coastal complex
of southern Florida and within the coastal complex of local areas.
Rapid transgressive recycling of organic-rich carbonate sediment
also occurred following a small rapid rise in sea level about 2,500-
2,400 years before present. This sea-level-induced transgression
triggered both a 100km-long rapidly shallowing carbonate mud
tidal flat coastline and produced extensive channel- and lake-filling
organic-rich carbonate mud sequences. |
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|a Electronic reproduction. |c Florida International University, |d 2015. |f (dpSobek) |n Mode of access: World Wide Web. |n System requirements: Internet connectivity; Web browser software. |
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|t Transgressive Recycling Produces Organic-Rich Carbonate Muds |
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|a Florida Documents Collection. |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15060929/00001 |y Click here for full text |
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|3 FULL TEXT- Transgressive Recycling Produces Organic-Rich Carbonate Muds |u http://www.searchanddiscovery.com/pdfz/documents/2005/wanless/images/wanless_small.pdf.html |y Transgressive Recycling Produces Organic-Rich Carbonate Muds |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/06/09/29/00001/Wanless et al_2010_Transgressive Recycling Produces Organic-Rich Carbonate Mudsthm.jpg |
