Search

You searched for: Resource Class Imagery Remove constraint Resource Class: Imagery Time Period 1950-1999 Remove constraint Time Period: 1950-1999

Search Results

51.
Imagery imagery

Digital Orthophoto Quarter Quadrangle images for Pennsylvania Imagery imagery pennsylvania-state-university

1993. United States Geologic Survey (USGS) and Pennsylvania Bureau of Topographic and Geologic Survey. Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) is a ... State of Pennsylvania.

52.
Imagery imagery

Digital Orthophoto Quarter Quadrangle images for Pennsylvania Imagery imagery pennsylvania-state-university

1999. United States Geologic Survey (USGS) and Pennsylvania Bureau of Topographic and Geologic Survey. Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) is a ... State of Pennsylvania.

53.

Driftless Areas [Illinois] university-of-illinois-urbana-champaign

1994. Illinois State Geological Survey. Driftless areas in Illinois. These areas are analogous to areas of the state where the bedrock surface is not buried by glacial drift. Data origina... Illinois State Geological Survey.

55.

Glacial Drift: Thickness and Character [Illinois] university-of-illinois-urbana-champaign

1994. Illinois State Geological Survey. Unconsolidated deposits, mainly glacial drift, overlie the bedrock surface in most of Illinois. Data are originally from ISGS Circular 490 by Piski... Illinois State Geological Survey.

56.

Major Bedrock Valleys [Illinois] university-of-illinois-urbana-champaign

1994. Illinois State Geological Survey. Continuous lines representing the lowermost elevations/ locations of (buried) bedrock valleys in the state of Illinois. Names of buried valleys are... Illinois State Geological Survey.

57.

Public Land Survey System (PLSS) Boundaries [Illinois] university-of-illinois-urbana-champaign

1968. Illinois State Geological Survey. Illinois Public Land Survey System (PLSS) boundaries and designations in line and polygon feature classes. The polygon attribute data include merid... Illinois State Geological Survey.

58.
Imagery imagery

Saline Wetland Areas: Nebraska Imagery imagery university-of-nebraska-lincoln

1989. 1 page aerial map showing the saline wetland areas highlighed by category level. LPS Natural Resource District.

60.

Shaded Relief map [Illinois] university-of-illinois-urbana-champaign

1995. Abert, Curtis C. Landforms of Illinois with a shaded relief portrayal. Derived from USGS Digital Elevation Model(DEM) data. Illustrates various Illinois landforms i... Illinois State Geological Survey.