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.
||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.
||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.
Measured Section Details
||Sub Unit Id
||Middle Cambrian Strata between head of Rough Draw and crest of Shell Mountain
||SW1/4 sec. 21, T.3 S., R. 11 E.
||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)
||Ellis Group, south slope of Dry Creek Ridge
||SE sec. 26,T. 2 S., R. 10 E.
||Sandstone, light gray, cross bedded, brown weathered, forms ledges, Gryphaea shells in many beds, salt and pepper