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Triassic (2) sedimentary rocks in southwestern Utah

StateUtah
NameTriassic (2) sedimentary rocks in southwestern Utah
Geologic ageLate Triassic
Original map labelTr2
Commentscontinental, interior basin. Shinarump member coincides with the initiation of the Andean-type margin
Primary rock typemudstone
Secondary rock typeconglomerate
Other rock typessiltstone
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone (Bed)contains petrified wood, tuffaceous material from west (bentonitic mudstone)
Minor
Sedimentary > Clastic > Conglomerate (Bed)Shinarump Conglomerate Member at base; major for that member
Incidental
Sedimentary > Clastic > Mixed-clastic (Bed)
Map references
Hintze, L.F., 1980, Geologic map of Utah: Utah Geological and Mineral Survey, scale 1:500,000.
Unit references
Hintze, L.F., 1980, Geologic map of Utah: Utah Geological and Mineral Survey, scale 1:500,000.
Biek, R.G., Willis, G.C., Hylland, M.D., and Doelling, H.H., 2000, Geology of Zion National Park, Utah, in Sprinkel, D.A., Chidsey, Jr., T.C., and Anderson, P.B., Geology of Utah's Parks and Monuments: Utah Geological Association Publication 28, p. 107-138.`
Geographic coverageIron - Kane - Millard - Washington

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