Mathematics – Logic
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jgre..107.5122h&link_type=abstract
Journal of Geophysical Research (Planets), Volume 107, Issue E12, pp. 5-1, CiteID 5122, DOI 10.1029/2000JE001494
Mathematics
Logic
2
Planetary Sciences: Composition, Planetary Sciences: Impact Phenomena (Includes Cratering), Planetary Sciences: Remote Sensing, Geochemistry: Planetary Geochemistry (5405, 5410, 5704, 5709, 6005, 6008), Planetology: Solar System Objects: Moon (1221)
Scientific paper
Detailed investigations of both endogenic and exogenic dark-haloed craters can provide critical information concerning the geology, composition, and evolution of portions of the lunar surface. Several dark-haloed and dark-rayed craters have been identified in the Maurolycus region in the southeastern nearside highlands. Clementine and Galileo multispectral imagery as well as Earth-based remote-sensing data were used to investigate the composition and origin of dark-haloed craters in the region. A striking albedo anomaly is associated with Buch B crater, which exhibits both a dark halo and dark rays. The result of a morphologic analysis clearly indicated that Buch B is an impact structure, not a volcanic vent. The optical maturity image shows that the Buch B ejecta deposits are immature and the radar and thermal data indicate a high abundance of fresh rocks and fragments in the 1-50 cm size range. FeO and TiO2 data as well as five point spectra extracted from Clementine UV-VIS images indicate that the dark ejecta is composed of immature mare-like material and may contain minor amounts of highland debris. Buch B excavated either an isolated cryptomare or, more likely, a mafic intrusion. One or more dikes of basaltic composition are possible candidates. Minor low-albedo anomalies have been identified around three other impact craters (Maurolycus A and B and Barocius M) in the region. While small FeO enhancements are seen in portions of the ejecta deposits associated with these craters, they do not approach the FeO values (12-14 wt.%) exhibited by the dark deposits of Buch B, and they do fall within the range of FeO abundances (5-9 wt.%) exhibited by highland terrain in the Maurolycus region. Hence the presence of a basaltic component is not required, and it cannot be concluded that either cryptomare or mafic intrusions were present in the target sites of these craters.
Blewett Dave T.
Giguere Thomas A.
Hawke Bernard Ray
Jeffrey Taylor G.
Lucey Paul G.
No associations
LandOfFree
Igneous activity in the southern highlands of the Moon does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Igneous activity in the southern highlands of the Moon, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Igneous activity in the southern highlands of the Moon will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-967612