| Basis for focus area |
Elk Creek carbonatite occurs at a step in the Midcontinent Rift System trend; other carbonatites may appear elsewhere in this area. |
| Identified resources |
Unknown. |
| Production |
Unknown. |
| Status |
Unknown. |
| Estimated resources |
Unknown. |
| Geologic maps |
Rocks of interest are fully concealed by younger rocks. |
| Geophysical data |
Inadequate aeromagnetic and aeroradiometric coverage. |
| Favorable rocks and structures |
Carbonatite host rock. Carbonatite apparently intruded the previously existing Midcontinent Rift System at a place where the rift has a jog/break, however existing aeromagnetic data are too poor to evaluate this possibility. |
| Deposits |
No data. |
| Evidence from mineral occurrences |
No data. |
| Geochemical evidence |
No data. |
| Geophysical evidence |
No data. |
| Evidence from other sources |
No data. |
| Cover thickness and description |
Concealed by Paleozoic sedimentary cover, thickness 200 m-1 km. |
| Authors |
Benjamin J. Drenth. |
| New data needs |
New basement mapping, high resolution geophysics. |
| Geologic mapping and modeling needs |
Basement geologic map needed. |
| Geophysical survey and modeling needs |
Need Rank 1 aeromagnetic data across this region to evaluate carbonatite signature in a regional structural context, gravity data are also very important. |
| Digital elevation data needs |
Lidar adequate, but not needed (concealed). |
