The Memnonia quadrangle is one of a series of 30 quadrangle maps of Mars used by the United States Geological Survey (USGS) Astrogeology Research Program. The Memnonia quadrangle is also referred to as MC-16 (Mars Chart-16).
The quadrangle is a region of Mars that covers latitude -30° to 0° and longitude 135° to 180°. The western part of Memnonia is a highly cratered highland region that exhibits a large range of crater degradation.
Memnonia includes these topographical regions of Mars (listed North to South):
- Arcadia Planitia
- Amazonis Planitia
- Lucus Planum
- Terra Sirenum
- Terra Cimmeria
Recently, evidence of water was found in the area. Layered sedimentary rocks were found in the wall and floor of Columbus Crater. These rocks could have been deposited by water or by wind. Hydrated minerals were found in some of the layers, so water may have been involved.
Many ancient river valleys Vallis including Mangala Vallis, have been found in the Memnonia quadrangle. Mangala appears to have begun with the formation of a graben, a set of faults that may have exposed an aquifer. Dark slope streaks and troughts (fossae) are present in this quadrangle.
Read more about Memnonia Quadrangle: Layers, Mangala Vallis, Craters, Dark Slope Streaks, Fossa On Mars, Valles