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A "quadrangle" is a topographic map produced by the United States Geological Survey (USGS) covering the United States. The maps are usually named after local physiographic features. The shorthand " quad " is also used, especially with the name of the map; for example, "the Ranger Creek, Texas quad".
Ternary diagram showing the relative abundance of quartz, feldspar, and lithic grains and views of what selected compositions would look like. A QFL diagram or QFL triangle is a type of ternary diagram that shows compositional data from sandstones and modern sands, point counted using the Gazzi-Dickinson method. The abbreviations used are as ...
This template displays the quadrangles of Mercury in relation to each other. Note that the quadrangles actually overlap with each other by 5 degrees along their north-to-south edges, this table is only intended as an approximate navigational guide.
Hence, any 15 degree quadrangle can be identified by two letters; the easting (longitude) is given first, followed by the northing (latitude). These two letters are the first two characters of a full GEOREF coordinate. Each 15-degree quadrangle is further divided into smaller quadrangles, measuring 1 degree of longitude by 1 degree of latitude.
The template takes a single optional parameter—a description of what the image should illustrate. Adds page to Category:Wikipedia requested geological diagrams . If you are requesting a technical illustration (e.g. a graph), please provide as much reference data as possible.
[[Category:Geology templates]] to the <includeonly> section at the bottom of that page. Otherwise, add <noinclude>[[Category:Geology templates]]</noinclude> to the end of the template code, making sure it starts on the same line as the code's last character.
This is a list of free and open-source software for geological data handling and interpretation. The list is split into broad categories, depending on the intended use of the software and its scope of functionality.
Download QR code; Print/export Download as PDF; Printable version; In other projects ... Diagram of Venus' 1:5,000,000 map quadrangles. Name Number Latitude Longitude