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Mineral Resources On-Line Spatial Data

Eagle sandstone

Eagle sandstone: sandstone and shaly sandstone with lignite beds in basal part of upper unit (Keu). The Virgelle sandstone member (Kvi) at base is distinguished where possible. Near Yellowstone National Park rocks incorrectly called Laramide in early reports and now regarded as roughly equivalent to the Eagle sandstone are tentatively mapped as Eagle sandstone.
StateMontana
NameEagle sandstone
Geologic agePhanerozoic | Mesozoic | Cretaceous-Late
Original map labelKeu
CommentsThis map unit (Keu) describes the upper unit of the Eagle sandstone.
Primary rock typesandstone
Secondary rock typemudstone
Other rock typescoal
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone > Arkose (Bed)
Minor
Sedimentary > Clastic > Mudstone (Bed)
Sedimentary > Coal (Bed)
Map references
Ross, P.R., Andrews, D.A., and Witkind, I.J., 1955, Geologic map of Montana: U.S. Geological Survey, 2 sheets, scale 1:500,000.
Unit references
Roberts, A.E., 1972, Cretaceous and early Tertiary depositional and tectonic history of the Livingston area, southwestern Montana, in Geology of the Livingston area, southwestern Montana: U.S. Geological Survey Professional Paper 526-C, p. C1
Van Gosen, B.S., Elliott, J.E., LaRock, E.J., du Bray, E.A., Carlson, R.R., and Zientek, M.L., 2000, Generalized geologic map of the Absaroka-Beartooth study area, south-central Montana: U.S. Geological Survey Miscellaneous Field Studies Map MF-2338, sca
Berg, R.B., Vuke, S.M., 2002, Geologic map of the Fort Benton 30' x 50' quadrangle: Montana Bureau of Mines and Geology Open File Report 460, 7 p., scale 1:100,000.
du Bray, E.A., Elliott, J.E., Van Gosen, B.S., LaRock, E.J., and West, A.W., 1994, Reconnaissance geologic map of the Sliderock Mountain area, Sweet Grass and Stillwater Counties, Montana: U.S. Geological Survey Miscellaneous Field Studies Map MF-2259, 1
Vuke, S.M., Berg, R.B., Colton, R.B., O'Brien, H.E., 2002, Geologic map for the Belt 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open File Report 450, 16 p., scale 1:100,000.
Lopez, D.A., 2001, Geologic map of the Sweet Grass Hills 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open File Report 443, 4 p., scale 1:100,000.
Porter, K.W., Wilde, E.M., 2001, Geology of the Winifred 30' x 60' quadrangle, eastern Montana: Montana Bureau of Mines and Geology Open File Report 437, scale 1:100,000.
Skipp, Betty and McGrew, L.W., 1977, The Maudlow and Sedan Formations of the Upper Cretaceous Livingston Group at the west edge of the Crazy Mountains basin, Montana, in Contributions to stratigraphy: U.S. Geological Survey Bulletin 1422-B, p.
Lopez, D.A., 2002, Geologic map of the Lonesome Lake 30' x 60' quadrangle, north-central Montana: Montana Bureau of Mines and Geology Open File Report 446, 4 p., scale 1:100,000.
Lopez, D.A., 2000, Geologic map of the Billings 30' x 60' quadrangle, Montana: Montana Bureau of Mines and Geology Geologic Map 59, scale 1:100,000.
Fraser, G.D., Waldrop, H.A. and Hyden, H.J., 1969, Geology of the Gardiner area, Park County, Montana: U.S. Geological Survey Bulletin 1277, 118 p.
Wilde, E.M., and Porter, K.W., 2000, Geologic map of the Roundup 30' X 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open File Report 404, scale 1:100,000.
Porter, K.W., and Wilde, E.M, 1999, Geologic map of the Musselshell 30' x 60' quadrangle, central Montana: Montana Bureau of Mines and Geology Open File Report 386, 13 p., scale 1;100,000.
Geographic coverageBig Horn - Blaine - Carbon - Cascade - Chouteau - Fergus - Gallatin - Garfield - Golden Valley - Hill - Judith Basin - Lewis and Clark - Liberty - Madison - Meagher - Musselshell - Park - Petroleum - Phillips - Rosebud - Stillwater - Sweet Grass - Toole - Wheatland - Yellowstone

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