| 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. |
