Lemmon Quadrangle

Geologic Map of the Lemmon 1 x 2 degree Quadrangle, South Dakota and North Dakota
Sawyer, J.S.; Fahrenbach, M.D., 2011
GQ250K-1_2011.ZIP

Martin Quadrangle

Geologic Map of the Martin 1 x 2 degree Quadrangle, South Dakota
Fahrenbach, M.D.; Sawyer, J.F.; Martin, J.E., 2020
GQ250K-2_2020.ZIP

McIntosh Quadrangle

Geologic Map of the McIntosh 1 x 2 degree Quadrangle, South Dakota
Fahrenbach, M.D.; Sawyer, J.F.; Martin, J.E., 2022
GQ250K-3_2022.ZIP

Rapid City Quadrangle

Geologic Map of the Rapid City 1 x 2 degree Quadrangle, South Dakota
Fahrenbach, M.D.; Myrman, T.J.; Sawyer, J.F., 2023
GQ250K-4_2023.ZIP