Douglas Group (KSPAd;0)

Lawrence FM (base LA)- mostly gray shale and sandstone with minor red shale, coal, gray limestone and conglomerate, thickness ranges from 140ft to 250 ft. Stranger FM- five members containing sandstone, shale, and minor limestone, coal and conglomerate ranging from 100 ft. to 180 ft. thickness.

State	Kansas
Name	Douglas Group
Geologic age	Phanerozoic \| Paleozoic \| Carboniferous Pennsylvanian-Late [Virgilian]
Original map label	&d
Comments	Total approximate thickness ranging from 240 ft. to 400 ft. in outcrop.
Primary rock type	shale
Secondary rock type	sandstone
Other rock types	coal; limestone; conglomerate
Lithologic constituents	Major Sedimentary > Clastic > Sandstone (Bed) Sedimentary > Clastic > Mudstone > Shale (Bed) Minor Sedimentary > Carbonate > Limestone (Bed) Sedimentary > Clastic > Conglomerate (Bed) Incidental Sedimentary > Coal (Bed)
Map references	Ross, J. A., 1991, Geologic Map of Kansas: Kansas Geological Survey, Univ. of Kansas Map M-23 Scale 1:500K.
Unit references	Ross, J. A., 1991, Geologic Map of Kansas: Kansas Geological Survey, Univ. of Kansas Map M-23 Scale 1:500K. Zeller, D.E., ed., 1968, The Stratigraphic Succession in Kansas, State Geological Survey of Kansas Bull. 189.
Geographic coverage	Allen - Anderson - Atchison - Chautauqua - Coffey - Doniphan - Douglas - Elk - Franklin - Greenwood - Jefferson - Johnson - Leavenworth - Miami - Montgomery - Osage - Shawnee - Wilson - Woodson - Wyandotte