Paleoenvironmental Implications of Holocene Sea-level Variation and Fluvial Depositional Change on the South Carolina Coastal Plain

Paleoenvironmental Implications of Holocene Sea-level Variation and Fluvial Depositional Change on the South Carolina Coastal Plain
Title Paleoenvironmental Implications of Holocene Sea-level Variation and Fluvial Depositional Change on the South Carolina Coastal Plain PDF eBook
Author Mark Jay Brooks
Publisher
Pages 256
Release 1996
Genre
ISBN

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Variation in Sea Level on the South Carolina Coastal Plain

Variation in Sea Level on the South Carolina Coastal Plain
Title Variation in Sea Level on the South Carolina Coastal Plain PDF eBook
Author Donald J. Colquhoun
Publisher
Pages 218
Release 1983
Genre Coasts
ISBN

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Late Holocene Sea Level Variability and Prehistoric Adaptations in the Lower Coastal Plain of South Carolina

Late Holocene Sea Level Variability and Prehistoric Adaptations in the Lower Coastal Plain of South Carolina
Title Late Holocene Sea Level Variability and Prehistoric Adaptations in the Lower Coastal Plain of South Carolina PDF eBook
Author Mark J. Brooks
Publisher
Pages 306
Release 1980
Genre Coasts
ISBN

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Defining the Stratigraphic and Paleoenvironmental Record of Rapid Sea-level Rise During the Late Pleistocene to Holocene in the Albemarle Sound Region of North Carolina

Defining the Stratigraphic and Paleoenvironmental Record of Rapid Sea-level Rise During the Late Pleistocene to Holocene in the Albemarle Sound Region of North Carolina
Title Defining the Stratigraphic and Paleoenvironmental Record of Rapid Sea-level Rise During the Late Pleistocene to Holocene in the Albemarle Sound Region of North Carolina PDF eBook
Author Erik Kenneth Gudmunson
Publisher
Pages 0
Release 2022
Genre
ISBN

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Sea-level fluctuations throughout the late Quaternary Period are recorded in the shallow stratigraphy and modern geomorphology of coastal North Carolina. In the Albemarle Sound region, four distinct Pleistocene sea-level highstand units occur between the late Pleistocene shoreline, marked by the Suffolk Scarp, and the modern ocean shoreline (a distance up to 120 km). Lithofacies and geophysical (ground penetrating radar and CHIRP seismic) data reveal the presence of multiple paleoenvironments during these highstand periods. These deposits are chronostratigraphically and lithostratigraphically categorized into depositional sequences (DS1-4), each separated by a subaerial unconformity or transgressive ravinement surface. DS1 and DS2 contain marine facies (shoreline, shallow shelf, and shoal) with DS1 representing marine deposition during either MIS5e or MIS5c and DS2 representing MIS5a transgressive deposits based on OSL age estimates (91.8 [plus-minus] 6.3 ka and 93.4 [plus-minus] 6.3). Overlying DS2, DS3 is dominated by marginal marine and fluvial facies interpreted to include estuarine, tidal flat, and braidplain paleoenvironments. Radiocarbon and OSL age data from this sequence suggest deposition occurred during MIS3. The uppermost sequence DS4, consists of Holocene valley-fill primarily within the Albemarle Sound, and marsh and swamp forest peat. Correlations of facies throughout the Albemarle Sound, paired with those interpreted in comparable studies in the region reveal how coastal North Carolina's geomorphology responded to relative sea-level changes during the late Pleistocene. The geologic characteristics of these depositional sequences and their corresponding depositional environments provide an analog for future conditions. The results of this study indicate that with current rates of regional sea-level rise (3.4 mm/yr) the wave dominated estuarine system of the present Albemarle Sound region will likely transition to an extensive tidal flat system comparable to the interpreted MIS3 paleoenvironment.

Chemical Abstracts

Chemical Abstracts
Title Chemical Abstracts PDF eBook
Author
Publisher
Pages 2692
Release 2002
Genre Chemistry
ISBN

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American Doctoral Dissertations

American Doctoral Dissertations
Title American Doctoral Dissertations PDF eBook
Author
Publisher
Pages 872
Release 1996
Genre Dissertation abstracts
ISBN

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Holocene Cycles

Holocene Cycles
Title Holocene Cycles PDF eBook
Author Charles W. Finkl
Publisher
Pages 440
Release 1995
Genre Climatic changes
ISBN

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