Salt Lake Formation?

Tuffaceous sediments, mudstone, sandstone, valley fill.
State Utah
Name Salt Lake Formation?
Geologic age Middle Miocene to Late Pliocene
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone (Tuffaceous)
Unconsolidated (Alluvial)valley fill
Minor
Sedimentary > Clastic > Sandstone (Bed)
References

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

Oaks, R.Q., Jr., Smith, K.A., Janecke, S.U., Perkins, M.E., and Nash, W.P., 1999, Stratigraphy and tectonics of Tertiary strata of southern Cache Valley, north-central Utah: Utah Geological Association Publication 27, p. 71-110.

NGMDB product
Counties Box Elder - Cache - Rich - Weber