dc.contributor.author |
Thompson, Thomas W. |
en |
dc.contributor.author |
Campbell, Bruce A. |
en |
dc.contributor.author |
Ghent, Rebecca R. |
en |
dc.contributor.author |
Hawke, B. Ray |
en |
dc.date.accessioned |
2011-06-01T16:44:13Z |
|
dc.date.available |
2011-06-01T16:44:13Z |
|
dc.date.issued |
2009 |
|
dc.identifier.citation |
Thompson, Thomas W., Campbell, Bruce A., Ghent, Rebecca R., and Hawke, B. Ray. 2009. "<a href="https://repository.si.edu/handle/10088/16533">Rugged crater ejecta as a guide to megaregolith thickness in the southern nearside of the Moon</a>." <em>Geology</em>. 37 (7):655–658. <a href="https://doi.org/10.1130/G25565A.1">https://doi.org/10.1130/G25565A.1</a> |
en |
dc.identifier.issn |
0091-7613 |
|
dc.identifier.uri |
http://hdl.handle.net/10088/16533 |
|
dc.description.abstract |
The southern highlands of the Moon comprise superposed ejecta layers, individually as thick as a few kilometers, from the major basins. Smaller (1-16-km-diameter) impact craters that penetrate this layered megaregolith and excavate material from depth have radar properties that provide insight into the variability of megaregolith thickness above a postulated basement of large crustal blocks. We observe a significant difference in the population of radar-bright craters, 1-16 km and larger in diameter, between regions of the southeastern near-side highlands north and south of ~lat 48{degrees}S. There are about one-third more radar-bright craters north of this line than to the south, broadly coincident with the mapped boundary between southern deposits mapped as pre-Nectarian age and those of Nectarian-Imbrian age to the north. The radar-bright crater population is consistent with a megaregolith thickness of ~1.5 km in the north and ~2.5 km in the south, a difference we attribute to South Pole-Aitken basin ejecta. |
en |
dc.relation.ispartof |
Geology |
en |
dc.title |
Rugged crater ejecta as a guide to megaregolith thickness in the southern nearside of the Moon |
en |
dc.type |
Journal Article |
en |
dc.identifier.srbnumber |
78759 |
|
dc.identifier.doi |
10.1130/G25565A.1 |
|
rft.jtitle |
Geology |
|
rft.volume |
37 |
|
rft.issue |
7 |
|
rft.spage |
655 |
|
rft.epage |
658 |
|
dc.description.SIUnit |
NASM |
en |
dc.description.SIUnit |
NASM-CEPS |
en |
dc.citation.spage |
655 |
|
dc.citation.epage |
658 |
|