Lance Formation (WYKl;0)

LANCE FORMATION north Wyoming--Thick-bedded buff sandstone and drab to green shale; thin conglomerate lenses; south and northeast Wyoming--Brown and gray sandstone and shale; thin coal and carbonaceous shale beds.

State	Wyoming
Name	Lance Formation
Geologic age	Phanerozoic \| Mesozoic \| Cretaceous-Late
Original map label	Kl
Primary rock type	sandstone
Secondary rock type	shale
Other rock types	conglomerate; coal
Lithologic constituents	Major Sedimentary > Clastic > Mudstone > Shale Sedimentary > Clastic > Sandstone Minor Sedimentary > Clastic > Mudstone > Shale (Carbonaceous) Sedimentary > Clastic > Conglomerate Sedimentary > Coal
Map references	Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey. [http://pubs.er.usgs.gov/publication/ofr83802]
Unit references	Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey. [http://pubs.er.usgs.gov/publication/ofr83802]
Geographic coverage	Big Horn - Campbell - Carbon - Converse - Crook - Fremont - Goshen - Hot Springs - Johnson - Natrona - Niobrara - Park - Sheridan - Sweetwater - Washakie - Weston