Elk Creek region

Region Central, North Central
Mineral systems
Deposit types
Other minerals

Information leading to the delineation of this focus area

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).