Anaxagoras Crater

Anaxagoras crater is close to the north pole of the Moon, is about 50 km in diameter and is at coordinates 73.4 N / 10.1 W. There is a lot of impact melt within the crater which creates some interesting terrain. The interior of the crater was selected as a region of interest for human exploration by the Constellation program as this region may help in the study of the global magma ocean concept and the evolution and development of the lunar crust. The central peak of Anaxagoras crater is composed of pure anorthosite which probably formed when the Moon was molten and the lighter material floated to the top and solidified.


Anaxagoras crater seen by the high-definition camera on Japan’s lunar orbiter Selene-1 in 2009. [JAXA/NHK/SELENE]


M155309869RC
A dome within Anaxagoras crater. Most of the boulders in the image are between 10 and 30 metres in size.

Quote:(author=LROC News System) Additionally, there are several hills and bulges that are covered with clusters of boulders. There are no impacts in the melt sheet that might account for the boulder clusters, thus a possible explanation is that the boulders are eroding out of the impact melt that covers these hills. These boulders look similar to boulder clusters eroding out of wrinkle ridges in the mare; are they the result of a similar process?

See Impact melt in Anaxagoras crater below.


M155309869RC
A boulder precariously balanced on the edge of a cliff or steep slope.


M139964115RC
Boulder group resembling a face.

References

Impact melt in Anaxagoras crater (Lunar Networks)

Anaxagoras Crater – LOLA image

Anaxagoras Exterior Melt (LROC)

Lunar Anorthosite

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About geoffroynon

Retired mainframe programmer.

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