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]
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]
Streaks on side of pedestal crater in Tikhonravov, as seen by HiRISE. Scale bar is 500 meters long. Click on image to see close-up of the crater edge.
Close-up of layers in Tikhonravov in Arabia, as seen by Mars Global Surveyor, under the MOC Public Targeting Program. Layers may form from volcanoes, the wind, or by deposition under water. The craters on the left are pedestal craters.
Layers under cap rock of a pedestal crater, as seen by HiRISE under HiWish program. Pedestal crater is within the much larger Tikhonravov Crater.
Layers under cap rock of a pedestal crater, as seen by HiRISE under HiWish program. Pedestal crater is within the much larger Tikhonravov.
Close-up of some layers under cap rock of a pedestal crater, as seen by HiRISE under HiWish program.
Close-up of some layers under cap rock of a pedestal crater and a dark slope streak, as seen by HiRISE under HiWish program.
^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.
^Cabrol, N. and E. Grin. 2001. "The Evolution of Lacustrine Environments on Mars: Is Mars Only Hydrologically Dormant?" Icarus: 149, 291–328.
^Fassett, C. and J. Head. 2008. "Open-basin lakes on Mars: Distribution and implications for Noachian surface and subsurface hydrology". Icarus: 198, 37–56.
^"HiRISE | the Margin of a Pedestal Crater (PSP_008508_1870)".
tikhonravov, crater, tikhonravov, large, eroded, crater, arabia, quadrangle, mars, kilometres, diameter, named, after, mikhail, tikhonravov, russian, rocket, scientist, tikhonravov, believed, have, once, held, giant, lake, that, drained, into, kilometre, long,. 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 TikonravovViking 1 Orbiter photoPlanetMarsCoordinates13 18 N 35 54 E 13 3 N 35 9 E 13 3 35 9QuadrangleArabiaDiameter344 km 214 mi EponymMikhail TikhonravovPedestal craters editSome 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 nbsp Oblique Viking Orbiter 1 view of Tikhonravov nbsp Map of Arabia quadrangle with major craters nbsp Tikhonravov crater floor as seen by Mars Global Surveyor Click on image to see dark slope streaks and layers nbsp Streaks on side of pedestal crater in Tikhonravov as seen by HiRISE Scale bar is 500 meters long Click on image to see close up of the crater edge nbsp Close up of layers in Tikhonravov in Arabia as seen by Mars Global Surveyor under the MOC Public Targeting Program Layers may form from volcanoes the wind or by deposition under water The craters on the left are pedestal craters nbsp Layers under cap rock of a pedestal crater as seen by HiRISE under HiWish program Pedestal crater is within the much larger Tikhonravov Crater nbsp Layers under cap rock of a pedestal crater as seen by HiRISE under HiWish program Pedestal crater is within the much larger Tikhonravov nbsp Close up of some layers under cap rock of a pedestal crater as seen by HiRISE under HiWish program nbsp Close up of some layers under cap rock of a pedestal crater and a dark slope streak as seen by HiRISE under HiWish program See also editList of craters on MarsReferences edit Gazetteer of Planetary Nomenclature Tikhonravov 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 Cabrol N and E Grin 2001 The Evolution of Lacustrine Environments on Mars Is Mars Only Hydrologically Dormant Icarus 149 291 328 Fassett C and J Head 2008 Open basin lakes on Mars Distribution and implications for Noachian surface and subsurface hydrology Icarus 198 37 56 HiRISE the Margin of a Pedestal Crater PSP 008508 1870 Portal nbsp Solar System nbsp This article about the planet Mars or its moons is a stub You can help Wikipedia by expanding it vte nbsp This article about an extraterrestrial geological feature is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Tikhonravov crater amp oldid 1057067630, wikipedia, wiki, book, books, library,
