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.
Reference | Richards, P.W., 1957, Geology of the area east and southeast of Livingston, Park County, Montana: U.S. Geological Survey Bulletin 1021-L, p. 385-436. |
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Notes | There is information in this reference about the Virgelle Formation (p. 417-419) but it does not indicate any specific locations for sandstone, nor does it describe its characteristics in any detail other than color and weathering. |
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 |
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_f | Middle Cambrian Strata between head of Rough Draw and crest of Shell Mountain | 03S | 11E | 21 | C | SW1/4 sec. 21, T.3 S., R. 11 E. | 45.55615212625 | -110.379655031 | TRS-SEC | NAD83 | 394 | Quartzite (upper 50ft )and massive sandstone, gray/reddish, thick bedded, hematite and limeonite nodules near bottom | some granules of quartzite few mm in diameter (basal) | 75 | no | ||||
Jsw | Ellis Group, south slope of Dry Creek Ridge | 02S | 10E | 26 | D | SE sec. 26,T. 2 S., R. 10 E. | 45.6290692873 | -110.4524421125 | TRS-SEC | NAD83 | 411 | Sandstone, light gray, cross bedded, brown weathered, forms ledges, Gryphaea shells in many beds, salt and pepper | mostly medium | calcareous, glauconitic | 80 | no |