GEOLOGIC CONTACTS AND LANDFORMS
Geologic Contact - Well defined geologic contact.
Geologic Contact - Inferred, gradational, or approximately located geologic contact.
Channel Scarp - Well defined channel scarp or boundary of outwash channel.
Channel Scarp - Inferred or approximate location of channel scarp or boundary of channel.
Glacial Margin - Well defined glacial margin.
Glacial Margin - Inferred or approximate location of glacial margin.
