Tikhonravov (crater)

Summary

Tikonravov
Tikhonravov - PIA00172-MC-12-ArabiaRegion-19980605 (cropped).jpg
Viking 1 Orbiter photo
PlanetMars
Coordinates13°18′N 35°54′E / 13.3°N 35.9°E / 13.3; 35.9Coordinates: 13°18′N 35°54′E / 13.3°N 35.9°E / 13.3; 35.9
QuadrangleArabia quadrangle
Diameter344 km (214 mi)
EponymMikhail Tikhonravov

Tikhonravov is a large, eroded crater in the Arabia quadrangle of Mars. It is 344 kilometres (214 mi) in diameter and was named after Mikhail Tikhonravov, a Russian rocket scientist.[1] Tikhonravov is believed to have once held a giant lake that drained into the 4,500-kilometre-long (2,800 mi) Naktong-Scamander-Mamers lake-chain system. An inflow and outflow channel has been identified.[2] Many craters once contained lakes.[3][4]

Pedestal craters

Some craters in Tikhonravov are classified as pedestal craters. A pedestal crater is a crater with its ejecta sitting above the surrounding terrain. They form when an impact crater ejects material which forms an erosion resistant layer, thus causing the immediate area to erode more slowly than the rest of the region. The result is that both the crater and its ejecta blanket stand above the surroundings.[5]

See also

References

  1. ^ Gazetteer of Planetary Nomenclature: Tikhonravov
  2. ^ Fassett, C. and J. Head III. 2008. "Valley network-fed, open-basin lakes on Mars: Distribution and implications for Noachian surface and subsurface hydrology". Icarus: 198. 39–56.
  3. ^ Cabrol, N. and E. Grin. 2001. "The Evolution of Lacustrine Environments on Mars: Is Mars Only Hydrologically Dormant?" Icarus: 149, 291–328.
  4. ^ Fassett, C. and J. Head. 2008. "Open-basin lakes on Mars: Distribution and implications for Noachian surface and subsurface hydrology". Icarus: 198, 37–56.
  5. ^ http://hirise.lpl.arizona.edu/PSP_008508_1870