Quadrangle (geography)

Source: Wikipedia, the free encyclopedia.
New York (Essex County) Mt. Marcy: an 1892 USGS quadrangle map (or topographic sheet) of the Mount Marcy area of the Adirondacks in New York State from the first decades of the United States Geological Survey.

A "quadrangle" is a

physiographic features. The shorthand "quad" is also used, especially with the name of the map; for example, "the Ranger Creek, Texas quad". A quadrangle is defined by north and south boundaries of constant latitude
(which are not great circles so are curved), and by east and west boundaries of constant longitude.

From approximately 1947–1992, the USGS produced the 7.5 minute series, with each map covering an area one-quarter of the older 15-minute quad series, which it replaced.

NAD83 datum, which is typically within one meter of WGS84, or within the uncertainty of most GPS coordinate measurements. The USGS also produces quarter quadrangle (QQ) maps of areas 3.75 minutes square.[3][4][5]

The surfaces of other planets have also been divided into quadrangles by the USGS. Martian quadrangles are also named after local features.[6]

See also

References

  1. ^ "Topographic Maps". United States Geological Survey. Retrieved 4 April 2020.
  2. ^ Map Scales, Fact Sheet FS105-02, (February 2002)
  3. ^ "Quarter Quad of Digital Orthophoto Quadrangle (DOQs) Color". Retrieved 2023-01-01.
  4. ^ "USGS 3.75 minute quarter quadrangle boundaries". Retrieved 2023-01-01.
  5. ^ "3.75' 1:12,000 Quarter Quadrangle Index". Archived from the original on 2020-10-23. Retrieved 2023-01-01.
  6. ISBN 0-312-24551-3
    .
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