Astronomy:Pasteur (Martian crater)

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Location of Pasteur Crater
RegionArabia quadrangle
CoordinatesCoordinates: 19°24′N 335°30′W / 19.4°N 335.5°W / 19.4; -335.5
Diameter116.15 km

Pasteur Crater is a crater in the Arabia quadrangle of Mars, located at 19.4° north latitude and 335.5° west longitude. It is approximately 116 kilometres (72 mi) in diameter and was named after renowned French chemist and microbiologist Louis Pasteur.[1]


Dark sand dunes are clustered in the southwest of the crater. The orientation of the barchan dunes suggest that they were generated by northeasterly winds. The source of the dune's sand appears to be local. Upwind of the dunes there is a 2-km diameter crater, informally known as Euphrates, within Pasteur crater that may have excavated sediments. The dark sediments have formed a patch at Euphrates' base. HiRISE imagery of the intracrater dunes within Pasteur crater over 1 martian year indicate that the dunes are active with sand movement in a southwesterly direction.[2]



See also