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Hillard Shale

HILLIARD SHALE--Dark-gray to tan claystone, siltstone, and sandy shale.
State Wyoming
Name Hillard Shale
Geologic age Phanerozoic | Mesozoic | Cretaceous-Late
Primary rock type mudstone
Secondary rock type
Other rock types
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Claystone
Sedimentary > Clastic > Siltstone
Sedimentary > Clastic > Mudstone > Shale
Map references
Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey.
Unit references
Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey.
Counties Lincoln - Uinta