CAMP event-Culpeper basin

Region East, Southeast
Mineral systems
Deposit types
Other minerals

Information leading to the delineation of this focus area

Basis for focus area Lacustrine transgressive facies of the Newark Supergroup.
Identified resources None.
Production None.
Status Unknown.
Estimated resources Unknown.
Geologic maps Horton and others (2017), scale 1:500,000.
Geophysical data Mostly Inadequate aeromagnetic and aeroradiometric coverage: 95% Rank 4 & 5 aeromagnetics and Rank 3 aeroradiometric coverage, 5% Rank 2 aeromagnetics and aeroradiometric coverage.
Favorable rocks and structures Lacustrine transgressive facies of the Newark Supergroup.
Deposits Unknown.
Evidence from mineral occurrences Deposit model potential; Co anomalies associated with Cu mineralization; extent of mineralization unknown.
Geochemical evidence Unknown.
Geophysical evidence Unknown.
Evidence from other sources Base-metal Ag-rich veins and barite deposits share similarities with stratabound sandstone-hosted Cu-Ag deposits similar to those of the Revett Formation in the Belt Supergroup in Montana and Idaho. Characteristics include: tectonic setting (basin subsidence and crustal extension in a continental setting), association of mineralization with regional faults, and fluid inclusion evidence for moderately saline, low temperature (100 to 250° C) brines.
Cover thickness and description Exposed bedrock to thin cover.
Authors Jane M. Hammarstrom, Michael L. Zientek, Gilpin R. Robinson, Jr.
New data needs Geophysical data, geologic mapping, and geochemical analyses would be very helpful.
Geologic mapping and modeling needs 1:24,000 scale geologic mapping.
Geophysical survey and modeling needs High resolution aeromagnetic and radiometric coverage. Aeromagnetic data may image mafic rocks, associated structures, and possibly alteration zones. Radiometric data can help with geologic mapping in vegetated terrane.
Digital elevation data needs Lidar complete only in southern third of focus area.