MINOR MORAINES
ESKER
ICE-MOLDED OR ICE-SCOURED LANDFORM--Linear drumlin, rock drumlin, or fluting
LIMIT OF LATE WISCONSIN GLACIATION--Inferred
LIMIT OF LATE WISCONSIN GLACIATION
LIMIT OF ILLINOIAN GLACIATION--Inferred
BURIED BEDROCK VALLEYS OF THE ANCESTRAL MISSOURI AND MUSSELSHELL RIVERS
SOUTHEAST LIMIT OF RESIDUAL ERRATIC GLACIAL BOULDERS ON DISSECTED BEDROCK SURFACES COVERED BY DISINTEGRATION RESIDUUM
LIMIT OF ILLINOIAN GLACIATION
LIMIT OF A GLACIAL READVANCE, OR POSITION OF A SIGNIFICANT STILLSTAND OF AN ICE MARGIN
LIMIT OF A GLACIAL READVANCE, OR POSITION OF A SIGNIFICANT STILLSTAND OF AN ICE MARGIN--Inferred