Preliminary stratigraphic and hydrostratigraphic correlation of four deep coreholes east of the Savannah River Site in Allendale, Barnwell, and Aiken Counties, South Carolina

Conference · Mon Mar 01 00:00:00 EST 1993 · Geological Society of America, Abstracts with Programs; (United States)

OSTI ID:5948940

Gellici, J A; Logan, W R ^[1]

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1. South Carolina Water Resources Commission, Columbia, SC (United States)

Preliminary paleontologic, lithologic, and geophysical data from four deep coreholes east of the Savannah River Site in Allendale, Barnwell and Aiken Counties in South Carolina indicate the presence of four Upper Cretaceous formations and seven Tertiary formations in a dip-oriented geologic section. Hydrologic and lithologic data have been used to delineate three aquifer systems along the same section. The Cretaceous units are composed mainly of sand and clay with minor amounts of carbonates. The lowermost unit is correlative with the Cape Fear Formation. The upper three Cretaceous units are correlative with the Lumbee Group (Middendorf, Black Creek, Peedee). Updip units of the Tertiary section are mainly sand and clay, becoming increasingly calcareous downdip. The lower two Tertiary units are correlative with the Black Mingo Group (Ellenton, Williamsburg). Two middle units are correlative with the Orangeburg Group (Congaree, Santee) and the upper three units correlate with the Barnwell Group (Clinchfield, Dry Branch, Tobacco Road). Hydrologic and lithologic data are used to delineate three regional aquifer systems at the downdip terminus of the section; two in the Cretaceous and one in the Tertiary. Updip where the Cretaceous clays cease to act as an effective confining unit, the two aquifer systems coalesce resulting in one Cretaceous and one Tertiary aquifer system. Farther updip the Tertiary confining system pinches out and the entire sedimentary sequence acts as a single aquifer system.

• OSTI ID: 5948940
• Report Number(s): CONF-9304188-; CODEN: GAAPBC
• Journal Information: Geological Society of America, Abstracts with Programs; (United States), Vol. 25:4; Conference: 42. annual Geological Society of America (GSA) Southeastern Section meeting, Tallahassee, FL (United States), 1-2 Apr 1993; ISSN 0016-7592
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
54 ENVIRONMENTAL SCIENCES
GEOLOGIC FORMATIONS
STRATIGRAPHY
SAVANNAH RIVER PLANT
HYDROLOGY
SOUTH CAROLINA
AQUIFERS
LAND USE
LITHOLOGY
PALEONTOLOGY
DEVELOPED COUNTRIES
GEOLOGY
NATIONAL ORGANIZATIONS
NORTH AMERICA
PETROLOGY
US AEC
US DOE
US ERDA
US ORGANIZATIONS
USA
580000* - Geosciences
540250 - Environment
Terrestrial- Site Resource & Use Studies- (1990-)