Middle Shoreline Placers

Region East, Northeast; Southeast
Mineral systems
Deposit types
Other minerals

Information leading to the delineation of this focus area

Basis for focus area Belt sits between Fall Zone and lower shoreline placer belts and terminates in Georgia and Florida where carbonate rocks have been mapped. Some geochemical evidence, especially near major rivers. MRDS and geophysical data show more limited evidence for deposits compared to the Fall Zone and lower shorelines, but these areas have not been thoroughly explored and may be prospective.
Identified resources None.
Production No known production.
Status Unknown.
Estimated resources Potential resources identified near major rivers from geophysical and geochemical sample data, drilling.
Geologic maps Horton and others (2017), scale 1:500,000; Richmond and others (1987a, b), scale 1:1,000,000; Johnson and Peebles (1986), scale 1:1,000,000.
Geophysical data Inadequate aeromagnetic and aeroradiometric data: Rank 4 aeromagnetic; aeroradiometric 50% Rank 4, 40% Rank 5, 10% no coverage.
Favorable rocks and structures Atlantic Coastal Plain sands, especially in the vicinity of major rivers.
Deposits Unknown.
Evidence from mineral occurrences Potential from mineral system/deposit type.
Geochemical evidence Elevated Ti.
Geophysical evidence Radiometric eTh highs near major rivers.
Evidence from other sources Unknown.
Comments This is not a past producer and known occurrences are limited to areas near major rivers. However, there is reasonable argument for unknown concealed deposits. Land use is more favorable than the belt closer to the Atlantic coast. Resources identified near major rivers from geophysical and geochemical sample data, drilling.
Cover thickness and description Unknown.
Authors Anjana K. Shah, W.R. Doar, III, K.M. Farrell, S. Howard, William L. Lassetter, G. Means, R.H. Morrow, IV.
New data needs Geophysical data, geologic mapping, and geochemical analyses.
Geologic mapping and modeling needs Surface mapping will assist locations of sands; modeling to locate favorable strata at depth. Geochemical analyses to assess the resource quality/grade.
Geophysical survey and modeling needs High resolution aeroradiometric data to assist locations of heavy mineral sand deposits.
Digital elevation data needs Lidar variable across this large focus area -- either complete or in progress.