Buried topography of Utopia, Mars - Persistence of a giant impact depression

Details Buried topography of Utopia, Mars - Persistence of a giant impact depression Buried topography of Utopia, Mars - Persistence of a giant impact depression

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.2753m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, March 10, 1989, p. 2753-2759.

Physics

78

Hypervelocity Impact, Mars Surface, Structural Basins, Topography, Impact Damage, Landforms, Mesas, Planetary Mapping, Ring Structures, Vertical Distribution, Mars, Topography, Impacts, Surface, Features, Plains, Utopia Planitia, Diameter, Basins, Photographs, Maps, Craters, Diagrams, Crust, Depth, Age, Stratigraphy, Geology

Scientific paper

Knobs, partially buried craters, ring fractures, and some mesas permit a qualitative determination of the topography buried beneath younger northern plains materials. These features are widely distributed in the Utopia area but are absent in a large, roughly circular region centered at about 48 deg N, 240 deg W. This implies the existence of a circular depression about 3300 km in diameter buried beneath Utopia Planitia that is interpreted to represent the central part of a very large impact basin. The presence of buried curved massifs around part of this depression, and a roughly coincident mascon, lend further support. Present topography, areal geology, and paleotopography of buried surfaces all point to the persistence of this major depression for almost the entire history of Mars.

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