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Exposed Boulders in the Aitken Mare
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Exposed Boulders in the Aitken Mare

December 5, 2012
Boulder fields on the Moon are a fairly common feature. In general, large boulder fields are usually part of an ejecta deposit surrounding their parent crater or a product of gravity-driven mass wasting, where blocks on a slope are dislodged from the regolith or rock outcrops by various geologic processes (including meteorite impacts or moonquakes) and roll downhill. Since this boulder field is located at the base of a slope, it is likely a product of gravity-driven mass wasting. This field has boulders as large as 10 meters in size. Boulders eroding out of the hillslope and concentrated between two hills. NAC image M143480262, image width is 700 m [NASA/GSFC/Arizona State University].


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