According to the study, the value is very similar to that of the lunar crust
This impact, the researchers calculated, sent at least 816,000 cubic miles of pulverized lunar crust
flying out from the impact site--an amount equivalent to 135 times the combined volume of the Great Lakes.
The lunar crust
consists of aluminum- and calcium-rich rocks, similar to the terrestrial rock anorthosite.
Using ambient noise tomography, it will provide a new, more accurate, model of the lunar crust
From the variable distance between the probes, Zuber and her team determined the strength of gravity across the moon's surface, creating a highly detailed map, which they then used to determine where the lunar crust
thickens and thins.
These discoveries provide a new tool to unravel the processes involved in the formation of the Moon, how the lunar crust
cooled, and its impact history.
Among the discoveries: The lunar crust
is much thinner and more battered than scientists had imagined.
Accordingly, these domes might be interpreted as surface manifestations of laccolithic intrusions formed by flexure-induced vertical uplift of the lunar crust
(or, alternatively, as low effusive edifices due to lava mantling of highland terrain, or kipukas, or structural features).
The lunar crust
is also far more fractured by impacts than anyone had suspected; a full 12 percent of the surface layer is nothing but empty space in churned-up rock deposits.
The probes are designed to precisely map the moon's gravity so scientists can learn what lies beneath the lunar crust
and whether the moon's core is solid, liquid or some combination of the two.
US scientists have analysed ancient samples of lunar crust
derived from the molten rock that gave birth to the Moon.
This added weight caused the basins to subside, or sink, into the lunar crust