Bibliographic Citation
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Title | Postglacial wetland paleohydrology, southeastern United States: what is the climatic signal. |
Creator/Author | Stone, P.A. ; Gleason, P.J. ; Stipp, J.J. ; Johnson, R. |
Publication Date | 1985 Jan 01 |
OSTI Identifier | OSTI ID: 6070864 |
Report Number(s) | CONF-8510489- |
Other Number(s) | CODEN: GAAPB |
Resource Type | Conference |
Specific Type | Journal Article |
Resource Relation | Geol. Soc. Am., Abstr. Programs ; Vol/Issue: 17; 98. annual meeting of the Geological Society of America; 28 Oct 1985; Orlando, FL, USA |
Research Org | Univ. of South Carolina, Columbia (USA) |
Subject | 580100 -- Geology & Hydrology-- (-1989); FLORIDA-- WETLANDS;GEORGIA-- WETLANDS;PEAT-- DEPOSITION;WETLANDS-- CLIMATE MODELS;WETLANDS-- HYDROLOGY; CLIMATES;PALEOCLIMATOLOGY;SEA LEVEL;STRATIGRAPHY;VARIATIONS |
Related Subject | AQUATIC ECOSYSTEMS;ECOSYSTEMS;ENERGY SOURCES;FEDERAL REGION IV;FOSSIL FUELS;FUELS;GEOLOGY;LEVELS;MATHEMATICAL MODELS;NORTH AMERICA;ORGANIC MATTER;PALEONTOLOGY;USA |
Description/Abstract | Much of the abundant wetland area in S.E.U.S. that accretes autochthonous sediment (peat, muck, calcitic mud) began to do so in post-glacial times (less than or equal to ca.^13,000 B.P.^(/sup 14/C yr)).^Inundation intensities exert ecologic controls on the types of sediments produced.^Paleobotanical evidence in peats, via ecologic inferences, indicates a restricted range of paleohydrologic conditions.^Calcitic muds in South Florida indicate marshes with prolonged dry seasons.^Onsets and stratigraphic changes in sedimentation indicate the occurrence of hydrologic changes.^Radiocarbon correlation of widespread changes in different topographic settings allow the rejection of certain nonclimatic factors and the major factor of rising Holocene sea level.^A major climatic component is evidenced for each major regional hydrologic shift.^Deglaciation elsewhere was accompanied in S.E.U.S. by the onset of wetter condition despite a low sea level.^An areal explosion of peat deposits occurred in mid-Holocene times (most ca.^6500-4500 B.P.) and included areas elevated and isolated from rising sea level (e.g., Okefenokee Swamp, Ga., ca.^30 m msl).^Increasing surface wetness was interrupted, at least in the Everglades, by a ca.^1000-1500 year drier period beginning ca.^3000 B.P., evidenced by an intercalated calcitic-mud layer in marsh peats.^Evidence for concurrent higher levels of Lake Okeechobee also may reflect increased seasonality or else temperate-vs-tropical differences, in that the lake`s watershed experiences a more-temperate climate. |
Country of Publication | United States |
Language | English |
Format | Pages: 729 |
System Entry Date | 2001 May 13 |
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