Comments on Geologic Parameters
01 Depth:
The principal source for mapping formation depth of the Fox Hills Sandstone in the Powder River Basin is Lewis and Hotchkiss (1981), who presented a structure map on the top of the Fox Hills Sandstone; it reaches a maximum depth of more than 3,000 ft (>910 m) in the steeply dipping, western part of the basin, west of Gillette. We subtracted the subsea elevation of the formation top from the gridded land-surface elevation from a DEM generated from Digital Terrain Elevation Data (National Imagery and Mapping Agency, 2000) to calculate depth to top Fox Hills.
01 Map:

01 Reference:
Fox, J., and Higley, D., 1987, Structural at the Base of the Upper Cretaceous Fox Hills Sandstone, Power River Basin, Wyoming and Montana. USGS OFR 8
Lewis, B. D., and Hotchkiss, W. R., 1981, Thickness, percent sand, and configuration of shallow hydrogeologic units in the Powder River Basin, Montana and Wyoming: U. S. Geological Survey, Miscellaneous Investigations Series, Map I-1317, 6 sheets.
National Imagery and Mapping Agency, 2000, Digital terrain elevation data (DTED Level 0).
Geological Parameter 01, Depth
- Arbuckle Group
- Basin Fill /Carbonates
- Cape Fear Formation
- Cedar Keys Lawson
- Fox Hills, Lower Hell Creek
- Glen Canyon Group
- Granite Wash
- Lower Potomac Group
- Lyons Formation
- Madison Group
- Miocene, Lower
- Miocene, Upper
- Morrison Formation
- Mt. Simon Formation
- Oligocene
- Oriskany Formation
- Paluxy Sand
- Pliocene, Lower
- Pliocene, Upper
- Pottsville Formation
- Pre-Tuscaloosa
- Repetto Formation
- St. Peter Sand
- Tuscaloosa (AL)
- Tuscaloosa (GA)
- Woodbine Formation