Argyre Planitia

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Argyre Planitia is a circular extensive lowlands in the southern hemisphere of the planet Mars. The name is derived from ancient Greek and means as much as "Silver Level". Argyre Planitia Hellas Planitia and Isidis is the third largest Planitia impact basin on Mars.

The center of the area is located in 49.4 ° south latitude and 42.8 degrees west longitude. The plane between the highland regions Aonia Terra and Terra Noachis.

Description

Argyre Planitia was formed about 3.9 billion years ago, during the geological history of the planet early, by the impact of a large meteorite. The impact basin has a diameter of about 900 miles and is an average of 5 km below the surrounding regions. The bottom of the basin has several large impact craters, the largest of Mars crater Hooke (44 ° 55 ' S, 44 ° 24' WMars - 44.92 - 44.4 ) at its northern edge, has a diameter of 138 km. In the midst of the elevations of the eastern crater rim, on the border with Noachis Terra, is the 224 km diameter impact crater Galle ( 50 ° 38 ' S, 31 ° 0' WMars - 50.63 -31). In addition, relatively sharply defined rock formations rise out of the plane.