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The longitude gives the position east or west of the Moon's prime meridian, which is the line passing from the lunar north pole through the point on the lunar surface directly facing Earth to the lunar south pole. (See also Earth's prime meridian.) This can be thought of as the midpoint of the visible Moon as seen from the Earth.
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Layout of the 30 lunar quadrangles at the 1:2,500,000 map scale Layout of the 144 Lunar quadrangles at the 1:1,000,000 map scale. The Moon has been divided into 30 quadrangles by the United States Geological Survey at the 1:2,500,000 map scale. [1] At the 1:1,000,000 scale it's divided into 144 quadrangles. [2]
This map is the first (1:2,500,000)-scale lunar global geologic map, which incorporates the most comprehensive knowledge about the Moon by taking advantage of the latest exploration results and scientific findings.
Short title: CRMOmap2 pre pdf deletion; Software used: Adobe Illustrator CS5: Date and time of digitizing: 12:32, 22 May 2012: File change date and time: 12:35, 22 May 2012
The south pole itself is in lower left, in shadow. There is a long, narrow valley leading directly away from Schrödinger to the northwest, designated Vallis Schrödinger . This formation begins some distance from the outer rim of the crater, at the edge of the ejecta that surrounds the perimeter.
The Procellarum KREEP Terrane, or PKT, is a large province on the near side of the Moon that has high abundances of KREEP.KREEP is an acronym built from the letters K (the atomic symbol for potassium), REE (rare-earth elements) and P (for phosphorus), [3] and is a geochemical component of some lunar impact breccia and basaltic rocks.
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