| Basis for focus area |
Prospectivity analysis for VMS systems has highlighted a belt extending along northern central coast of the Seward Peninsula and along the Kougruk fault zone on the western edge of the Seward Peninsula. Lithology in the belt includes a bi-modal metavolcanic suite and pelitic metamorphosed sedimentary rocks. |
| Identified resources |
None. |
| Production |
None recorded. |
| Status |
Past exploration including local drilling. |
| Estimated resources |
None. |
| Geologic maps |
Statewide geologic map database; Wilson, Hults and others (2015), scale 1:1,584,000; Till and others (2011), scale 1:500,000. |
| Geophysical data |
Mostly (>90%) inadequate aeromagnetic and aeroradiometric coverage. |
| Favorable rocks and structures |
Interlayered bi-modal-felsic metavolcanic suite and marine metasedimentary rocks. |
| Deposits |
None. |
| Evidence from mineral occurrences |
ARDF occurrences. |
| Geochemical evidence |
Sediment and soil anomalies in pathfinder elements including Cu, Ag, Pb, Zn, Cd, or Co. Additional geochemical evidence comes from pan concentrates containing anglesite, cerussite, chalcopyrite, copper sulfide/oxide, galena, or sphalerite. Heavy Mineral concentrates containing Cu, Pb, Zn or Ag. |
| Geophysical evidence |
No data. |
| Evidence from other sources |
Moderate to high potential defined by prospectivity analysis; Karl and others (2016). |
| Comments |
This belt of rocks consists of metamorphosed bi-modal volcanic suites. Occurrences are hosted in felsic components of the package of rocks. |
| Cover thickness and description |
Unknown. |
| Authors |
Douglas C. Kreiner, James V. Jones, III. |
| New data needs |
New geologic mapping, geophysical surveys and well-constrained geochemical sampling. |
| Geologic mapping and modeling needs |
Mapping at 1:100,000 scale or better. |
| Geophysical survey and modeling needs |
Rank 1 or 2 aeromagnetics over the entire belt. |
| Digital elevation data needs |
IfSAR coverage is complete over entire focus area. |
