Scale 1:750,000, 2 pls. PLATES: 1, Map A.--Bedrock geology; 2, Map B.--Bedrock topography of the sub-Cretaceous surface and Map C--Bedrock topography of the sub-Quaternary surface and Map D.--Isopachs of residual Cretaceous strata and Map E.--Isopachs of Quaternary strata.
M-069 Geologic maps of the Late Cretaceous rocks, southwestern Minnesota.
Minnesota Geological Survey.
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