| Basis for focus area |
Kennecott-type copper deposits, favorable host and source rocks, tectonic setting. |
| Identified resources |
Identified resources of copper. |
| Production |
None recorded. |
| Status |
Past and current exploration. |
| Estimated resources |
Caribou Dome (Denali) deposit; Measured, Indicated, and Inferred resource of 3,082,059 short tons grading 3.1% Cu (189,596 lbs Cu). |
| Geologic maps |
Little modern mapping better than 1:250,000 scale other than Twelker and others (2015), scale 1:50,000; Werdon and others (2002, scale 1:63,360. |
| Geophysical data |
Inadequate aeromagnetic and aeroradiometric coverage. |
| Favorable rocks and structures |
Triassic Nikolai greenstone and associated ultramafic intrusions provided a source of Cu, Co, and other metals that circulated through and were trapped within the overlying reactive Chitistone limestone. |
| Deposits |
Caribou Dome (Denali) deposit; Measured, Indicated, and Inferred resource of 3,082,059 short tons grading 3.1% Cu (189,596 lbs Cu). |
| Evidence from mineral occurrences |
Multiple additional ARDF occurrences including Lichen and Blue Lode; new industry discovery called Senator. |
| Geochemical evidence |
Anomalous Co, Ge, Ga and/or Ag concentrations in streambed sediments and rock chips. |
| Geophysical evidence |
No data. |
| Evidence from other sources |
Prospectivity analyses conducted by Karl and others (2016) show large areas of this region containing HUC's with medium to high prospectivity with medium to high certainty. |
| Comments |
Anomalous copper in sediments occurs for greater than 35 km near Caribou Dome deposit. |
| Cover thickness and description |
Unknown. |
| Authors |
Douglas C. Kreiner, James V. Jones III, Melanie B. Werdon. |
| New data needs |
New mapping, geophysics, updated geochemical sampling. |
| Geologic mapping and modeling needs |
Mapping at 1:100,000 scale or better. |
| Geophysical survey and modeling needs |
Aeromagnetics and radiometrics collected at Rank 2. |
| Digital elevation data needs |
IfSAR coverage is complete over entire focus area. |
