Geologic maps of the Late Cretaceous rocks, southwestern Minnesota, M-69, Plate2
Description
Bedrock topography (elevation of the bedrock surface) of the sub-Cretaceous surface; Bedrock topography of the sub-Quaternary surface; Isopachs (thickness) of residual Cretaceous strata; Isopachs (thickness) of Quaternary strata, scale 1:750,000.
Setterholm, Dale R. (1990). Geologic maps of the Late Cretaceous rocks, southwestern Minnesota, M-69, Plate2. Minnesota Geological Survey. https://reflections.mndigital.org/catalog/mgs:952 (map)