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You searched for: geology Remove constraint geology Subject Geoscientific Information Remove constraint Subject: Geoscientific Information Time Period 1950-1999 Remove constraint Time Period: 1950-1999
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illinois

3. Glacial Boundaries: Illinois, 1998

1998. Illinois State Geological Survey. Glacial boundary lines representing the extent of glaciation for major glacial episodes in Illinois. Data originally from Quaternary Deposits in Il...
illinois

4. Bedrock Geology of Illinois - Geologic Units, 2004

1996. Illinois State Geological Survey. This feature class shows the distribution and extent of the bedrock geologic units within the State of Illinois, as depicted on the Geologic Map of...
illinois

5. Quaternary Deposits: Illinois, 1996

1996. Barb Stiff. This feature dataset is a generalized version of Quaternary Deposits of Illinois. Updated to reflect the areal distribution of the Wedron and Mason...
minnesota

7. C-09 Geologic atlas of Rice County, Minnesota [Part A]

1995. Hobbs, H.C and Minnesota Geological Survey. 6 pls. Scale 1:100,000. Pl. 1, data-base; pl. 2, bedrock geology; pl. 3, surficial geology; pl. 4, Quaternary stratigraphy; pl. 5, depth to bedrock...
penn-state

9. Late Wisconsinan Glacial Border 1:100,000

1995. Pennsylvania Department of Conservation and Natural Resources. Late in 1994, the Pennsylvania Bureau of Topographic and Geologic Survey was asked to develop a digital physiographic provinces map at 1:100,000 sc...
penn-state

10. Late Wisconsinan Glacial Border 1:500,000

1995. Pennsylvania Department of Conservation and Natural Resources. Late in 1994, the Pennsylvania Bureau of Topographic and Geologic Survey was asked to develop a digital physiographic provinces map at 1:100,000 sc...