USGS - science for a changing world

Mineral Resources On-Line Spatial Data

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

Meeteetse Formation and Lewis Shale

MEETEETSE FORMATION AND LEWIS SHALE. MEETEETSE FORMATION (AGE ABOUT 73 Ma) (Km)--Chalky-white to gray sandstone, yellow, green, and dark-gray bentonitic claystone, white tuff, and thin coal beds. LEWIS SHALE (AGE ABOUT 68 Ma) (Kle)--Gray marine shale containing many gray and brown lenticular concretion-rich sandstone beds.
StateWyoming
NameMeeteetse Formation and Lewis Shale
Geologic agePhanerozoic | Mesozoic | Cretaceous-Late
Original map labelKml
Primary rock typemedium-grained mixed clastic
Secondary rock typefine-grained mixed clastic
Other rock typesmixed clastic/volcanic; coal
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Claystone
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Sandstone
Incidental
Sedimentary > Clastic > Mudstone > Claystone > Bentonite
Sedimentary > Coal
Igneous > Volcanic (Pyroclastic, tuff)
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 coverageFremont - Natrona

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=WYKml;0
Page Contact Information: Peter Schweitzer