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Geochemistry of groundwater in Tertiary and Cretaceous sediments of the southeastern Coastal Plain in eastern Georgia, South Carolina, and southeastern North Carolina ( USA)

Water Resources Research

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Abstract

Water chemistry in both types of aquifer evolves to sodium chloride dominance as a result of fresh water mixing with subsurface brines or seawater present in the deeper downgradient parts of the aquifers. Principal aqueous chemical reactions include feldspar hydrolysis to kaolinite, calcite dissolution, calcium-for-sodium cation exchange, and neoformation of sodium smectite in the downgradient parts of the aquifers. Redox reactions produce dissolved iron concentrations greater than 1 mg/l -1 near the recharge areas. Organic matter is oxidized to CO 2 by iron and sulfate reduction processes. Production of CO 2 by a methanogenic process may also occur. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Geochemistry of groundwater in Tertiary and Cretaceous sediments of the southeastern Coastal Plain in eastern Georgia, South Carolina, and southeastern North Carolina ( USA)
Series title:
Water Resources Research
Volume
24
Issue:
2
Year Published:
1988
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
291
Last page:
303
Number of Pages:
13