Aeolis Mensae
A group of mensae on Mars / From Wikipedia, the free encyclopedia
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Aeolis Mensae is a tableland feature in the northwest Aeolis quadrangle of Mars. Its location is centered at 2.9° south latitude and 219.6° west longitude, in the transition zone between the Martian highlands and lowlands.[1] It is 820 kilometres (510 mi) long and was named after a classical albedo feature (Aeolis).[2] The constituent mensae can be as long as 70 kilometres (43 mi) and as tall as 2 kilometres (1.2 mi).[3] It is notable for being the origin of an abnormal concentration of methane detected by Curiosity in 2019, although its geology has attracted scientific attention since at least a decade before this event.[4] Aeolis Mensae is also the first region in Mars where submarine cyclic steps, an erosion feature that gives evidence of an ancient ocean, were identified.[5]