Iron Springs Formation of Cedar City Area (Tropic Shale and Dakota Sandstone)

Iron Springs Formation of Cedar City Area (Tropic Shale and Dakota Sandstone).
State Utah
Name Iron Springs Formation of Cedar City Area (Tropic Shale and Dakota Sandstone)
Geologic age Late Cretaceous
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone (Bed)Dakota and lenses in the Tropic
Sedimentary > Clastic > Mudstone > Shale (Bed)Tropic Shale
Incidental
Sedimentary > Coal (Bed)Tropic Shale and carbonaceous zones in the Dakota
Sedimentary > Clastic > Conglomerate (Bed)basal conglomerate of Dakota
Comments Tropic: marine; Dakota, coastal, floodplain and nearshore marine
References

Hintze, L.F., 1980, Geologic map of Utah: Utah Geological and Mineral Survey, scale 1:500,000.

Dyman, T.S., Cobban, W.A., Davis, L.E., Eves, R.L., Pollock, G.L., Obradovich, J. D., Titus, A.L.,Takahashi, K.I., Hester, T.C., and Cantu, D, 2002, Upper Cretaceous marine and brackish water strata at Grand Staircase-Escalante National Monument, Utah in Lund, W.R., ed., Field guide to geologic excursions in southwestern Utah and adjacent areas of Arizona and Nevada: U. S. Geological Survey Open-File Report 2002-172, pp.171-198.

Cobban, W.A., Dyman, T.S., Pollock, G.L., Takahashi, K.I., Davis, L.E., and Riggin, D.B., 2000, Inventory of dominantly marine and brackish-water fossils from Late Cretaceous rocks in and near Grand Staircase-Escalante National Monument, 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. 579-589.

NGMDB product
Counties Garfield - Iron - Kane - Washington