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The Utopia basin is estimated to have formed around 4.3-4.1 billion years ago. [ 6 ] [ 7 ] The impactor was likely around 400–700 kilometres (250–430 mi) in diameter. [ 8 ] [ 9 ] [ 10 ] The basin was subsequently mostly filled in, resulting in a mascon (a strong positive gravity anomaly ) detectable by orbiting satellites.
Isidis Planitia is a plain located within a giant impact basin on Mars, located partly in the Syrtis Major quadrangle and partly in the Amenthes quadrangle.At approximately 1,900 km (1,200 mi) in diameter, [1] it is the third-largest confirmed impact structure on the planet, after the Hellas and Utopia basins.
Short title: SJB Base Map; Unique ID of original document: xmp.did:72D9D8B287ABE61196FBF57DA2B92CCC: Software used: Adobe Illustrator CS4: Date and time of digitizing
Coloring of the base map indicates relative elevations, based on data from the Mars Orbiter Laser Altimeter on NASA's Mars Global Surveyor. Whites and browns indicate the highest elevations ( +12 to +8 km ); followed by pinks and reds ( +8 to +3 km ); yellow is 0 km ; greens and blues are lower elevations (down to −8 km ).
Coloring of the base map indicates relative elevations, based on data from the Mars Orbiter Laser Altimeter on NASA's Mars Global Surveyor. Whites and browns indicate the highest elevations ( +12 to +8 km ); followed by pinks and reds ( +8 to +3 km ); yellow is 0 km ; greens and blues are lower elevations (down to −8 km ).
The large basin is surrounded by heavily cratered highlands. The Argyre quadrangle is one of a series of 30 quadrangle maps of Mars used by the United States Geological Survey (USGS) Astrogeology Research Program. The Argyre quadrangle is also referred to as MC-26 (Mars Chart-26). [1] It contains Argyre Planitia and part of Noachis Terra.
The basin is located in the southern highlands of Mars and is thought to have been formed about 3.9 billion years ago, during the Late Heavy Bombardment. Studies suggest that when an impact created the Hellas Basin, the entire surface of Mars was heated hundreds of degrees, 70 meters of molted rock fell on the planet, and an atmosphere of ...
The basin is approximately 1,700 km (1,100 mi) wide [1] and drops 5.2 km (17,000 ft) below the surrounding plains; it is the second-deepest impact basin on Mars after Hellas. The crater Galle , located on the east rim of Argyre at 51°S 31°W / 51°S 31°W / -51; -31 , strongly resembles a smiley
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