USGS - science for a changing world

Mineral Resources On-Line Spatial Data

Mineral Resources > Online Spatial Data > Geology > by state > Wyoming

Greenhorn Formation and Belle Fourche Shale

GREENHORN FORMATION AND BELLE FOURCHE SHALE. GREENHORN FORMATION--Light-colored limestone, marl, and limy sandstone interbedded with gray concretionary shale. BELLE FOURCHE SHALE--Black soft bentonitic concretionary shale. CARLILE SHALE--Dark-gray sandy shale; Sage Breaks Member at top; Turner Sandy Member in middle.
StateWyoming
NameGreenhorn Formation and Belle Fourche Shale
Geologic agePhanerozoic | Mesozoic | Cretaceous-Late
Original map labelKgb
Primary rock typemixed clastic/carbonate
Secondary rock typefine-grained mixed clastic
Other rock typesmixed clastic/volcanic; medium-grained mixed clastic
Lithologic constituents
Minor
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Sandstone
Unconsolidated > Marl
Sedimentary > Carbonate > Limestone
Incidental
Sedimentary > Clastic > Mudstone > Claystone > Bentonite
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.
Geographic coverageNiobrara - Weston

Show this information as [XML] - [JSON]

AccessibilityFOIAPrivacyPolicies and Notices

Take Pride in America logoUSA.gov logoU.S. Department of the Interior | U.S. Geological Survey
URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=WYKgb;0
Page Contact Information: Peter Schweitzer