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Presentation Time: 9:00 AM-6:30 PM

SURFICIAL STRATIGRAPHY OF HORRY COUNTY, SC


WRIGHT, Eric, Department of Marine Science, Coastal Carolina University, P.O. Box 261954, Conway, SC 29528, HARRIS, M. Scott, Geology and Environmental Geosciences, College of Charleston, 66 George Street, Charleston, SC 29424 and HILL, Jenna, Marine Science Department, Coastal Carolina University, P.O. Box 261954, Conway, SC 29526, ewright@coastal.edu

Late Quaternary deposits of Horry County, SC are dominated by four paleo-barrier landforms. Characterized by topographic expression, these emergent systems are primarily composed of prograding beach-dune ridge deposits. At the modern sediment-starved shoreline, Holocene barrier islands show transgressive to compound transgressive-regressive architecture modified by spit accretion. The modern barrier coastline has intersected the most recent emergent barrier system producing the Grand Strand shoreline composed of welded deposits of overwash sand infilling back barrier lows. This study summarizes previous detailed stratigraphic studies of the modern and paleo-barrier systems, which are based upon LIDAR, ground penetrating radar and shallow coring. Modern shoreline configurations are used to better interpret paleo barrier systems stratigraphy and better understand the history of the high-stand paleo barrier deposits.

Session No. 31

T26. Linking Coastal and Aeolian Geomorphology at the Beach-Dune Interface (Posters)
Sunday, 4 November 2012: 9:00 AM-6:30 PM
Hall B (Charlotte Convention Center)
Geological Society of America Abstracts with Programs. Vol. 44, No. 7, p.106
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