Geologic map

A geologic map is a special-purpose map made to show subsurface geological features.

geologic map
A geologic map is a map that notes the structure and composition of geologic features, like the presence of minerals, rock types, earthquake faults, underground water, and landslide areas.
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geologic maps -- Maps that show the types and ages of rock of an area. These maps are used by paleontologists to find areas that are likely to contain fossils they are interested in.

Geologic map of California, USGS 1966, Scale 1:2,500,000
Two Weeks Ago ...
Landform map of England by Erwin Raisz (original drawing - 1948).

Kentucky Geologic Map
This map service is a one-stop location to view and explore Kentucky geologic map data and related-data (geologic outcrops, photos, and diagrams), Kentucky water wells and springs, Kentucky oil and gas wells.

Figure 2. USGS geologic map.
Figure 3. Landsat 7 satellite image from which land cover information can be derived.
Figure 4. Satellite image data in figure 3 have been analyzed to indicate classes of land uses and cover.

Development of 3-D framework models begins with the assembly of primary data such as: digital elevation models (DEM), geologic maps, geologic cross-sections, and lithologic well logs.

One fine map from 2004 that captured the award in the geologic mapping category was the 2004 Pine County Geologic Atlas from the Minnesota DNR.

consider laying a grid over a geologic map
create a raster by coding each cell with a value that represents the rock type which appears in the majority of that cells areas
when finished, every cell will have a coded value ...

National Cooperative Geologic Mapping Program (US)
NC&GS
National Charting & Geodetic Survey ...

geologic map See: map, geologic graticule Network of parallels and meridians on a map or chart.

The largest area covered by most topographic maps used for scientific mapping purposes (i.e. geologic mapping, habitat studies, etc.) are two degrees of longitude by one degree of latitude (see below).

Common applications of MSS and TM data include geologic mapping and exploration, vegetation mapping and change detection, cartography, civil engineering, oceanography, and assessment of the effects of agriculture, logging, ...

See also: Area, Map, Information, Image, Cover