Results: 1 - 3 of 3
Jul 12, 2009
Open File Report
… the unit being protected was a bedrock unit. Stratigraphic … the drift, AGS used available bedrock topography or drift …
Dec 31, 1972
Open File Report
… layer (other than consolidated bedrock) thicker than four inches …
Dec 31, 1968
Bulletin
… reflects that of the underlying bedrock. A noticeable exception is …