The data displayed below were collected during a joint project between the following departments at Montana Tech of The University of Montana: Geophysical Engineering and the Montana Bureau of Mines and Geology. The samples represent sandstones collected and analyzed for their potential use as proppant material.

General Information
Reference Richards, P.W, 1955, Geology of the Bighorn Canyon - Hardin area, Montana and Wyoming: U.S. Geological Survey Bulletin 1026, 93 p.
Notes
Measured Section Details
Unit Symbol Name Township Range Section 1/4 Section Location Latitude Longitude Geomethod Datum Page Number Sub Unit Id Sandstone Description Grain Size Cementation Roundness Sorting Thickness (ft) Suitability
*Ma Amsden Formation in canyon near Kane, Wyo., Dry Head, Mont., road. 09S 28E 35 W1/2 sec. 35, T. 9 S., R. 28 E. 45.00825870845 -108.260570101 TRS-SEC NAD83 28 Sandstone, light gray, cross bedded, ledge forming fine calcareous 4 maybe
*t Amsden Formation about 3 miles south of Bighorn River canyon mouth 06S 31E 33 A NE1/4 sec. 33, T. 6 S., R. 31 E. 45.2716295282 -107.913818682 TRS-SEC NAD83 29 sandstone, white, weathering gray - yellowish gray, massive cross-bedded friable 22 yes
*Ma Amsden Formation about 3 miles south of Bighorn River canyon mouth 06S 31E 33 A 45.2716295282 -107.913818682 TRS-SEC NAD83 29 Sandstone, purplish-brown and white, locally cherty quartzitic 10 no
*Ma Amsden Formation about 3 miles south of Bighorn River canyon mouth 06S 31E 33 A 45.2716295282 -107.913818682 TRS-SEC NAD83 29 sandstone, white to gray, weathers brown, massive calcareous 3 no
*Ma Amsden Formation about 3 miles south of Bighorn River canyon mouth 06S 31E 33 A 45.2716295282 -107.913818682 TRS-SEC NAD83 29 sandstone, dark red, massive, nonresitant, some gray streaks fine well-cemented to friable 6 no
*Ma Amsden Formation about 3 miles south of Bighorn River canyon mouth 06S 31E 33 A 45.2716295282 -107.913818682 TRS-SEC NAD83 29 sandstone, light reddish brown, massive medium to fine friable, very calcareous 11 probably not
*Ma Amsden Formation about 3 miles south of Bighorn River canyon mouth 06S 31E 33 A 45.2716295282 -107.913818682 TRS-SEC NAD83 29 sandstone, red, medium to coarse poorly cemented quartz and sand grains sub angular poorly 23 no
*t Section of Tensleep sandstone 09S 28E 34 S1/2 sec. 34, t. 9 S., R. 28 E. 45.00827704815 -108.280945999 TRS-SEC NAD83 31 yellowish brown, weathers brown, thin bedded, ledge forming, thin lenses of calcite in upper part calcareous 14 no
*t Section of Tensleep sandstone 09S 28E 34 45.00827704815 -108.280945999 TRS-SEC NAD83 31 white, cross-bedded, clean, weathers light gray and nodular fine porous, friable, well rounded 13 yes
*t Section of Tensleep sandstone 09S 28E 34 45.00827704815 -108.280945999 TRS-SEC NAD83 31 brown, eroded significantly to the north. medium calcareous, porous, slabby, 8 yes
*t Section of Tensleep sandstone 09S 28E 34 45.00827704815 -108.280945999 TRS-SEC NAD83 32 white, weathered light gray, fine friable 4 yes
*t Section of Tensleep sandstone 09S 28E 34 45.00827704815 -108.280945999 TRS-SEC NAD83 32 brown fine calcareous 2 yes
*t Section of Tensleep sandstone 09S 28E 34 45.00827704815 -108.280945999 TRS-SEC NAD83 32 white to light gray, medium bedded and cross bedded, nodular, ledge forming 6 no
*t Section of Tensleep sandstone 09S 28E 34 45.00827704815 -108.280945999 TRS-SEC NAD83 32 light-greenish gray, mostly covered calcareous, soft, platy 1 no
*t Section of Tensleep sandstone 09S 28E 34 45.00827704815 -108.280945999 TRS-SEC NAD83 32 white, weathers gray, cross bedded medium porous 3 yes
*t Section of Tensleep sandstone 09S 28E 34 45.00827704815 -108.280945999 TRS-SEC NAD83 32 light-brown gray, upper part forms ledge while lower is covered fine 6 maybe
*t Section of Tensleep sandstone 09S 28E 34 45.00827704815 -108.280945999 TRS-SEC NAD83 32 light gray, weathers brown, ledge forming medium variable calcareous locally quartzitic 4 yes
*t Section of Tensleep sandstone 09S 28E 34 45.00827704815 -108.280945999 TRS-SEC NAD83 32 light gray, thick bedded, nodular fine- medium calcareous 11 maybe
*t Section of Tensleep sandstone 09S 28E 34 45.00827704815 -108.280945999 TRS-SEC NAD83 32 white, weathers gray fine slightly calcareous, porous 5 yes
*t Section of Tensleep sandstone 09S 28E 34 45.00827704815 -108.280945999 TRS-SEC NAD83 32 white to light gray, weathers brown, ledge forming, cross bedded medium calcareous at top, friable 5 yes
*t Section of Tensleep sandstone 09S 28E 34 45.00827704815 -108.280945999 TRS-SEC NAD83 32 greenish gray, weathers light brown, crossbedded and nodular in upper half medium slightly calcareous 3 no