Physics
Scientific paper
Feb 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jgr...103.3701l&link_type=abstract
Journal of Geophysical Research, vol. 103, p. 3701
Physics
79
Lunar Rocks, Iron Oxides, Titanium Oxides, Lunar Crust, Structural Basins, Lunar Mantle, Chemical Composition, Mineral Deposits
Scientific paper
We use newly developed spectroscopic methods for determining FeO and TiO2 abundances to study the huge (2500 km diameter) South Pole-Aitken basin. The floor of this basin shows iron and titanium values which are weakly correlated and largely range from 7 to 14 wt pct FeO and from 0.5 to 1.5 wt pct TiO2. This composition is consistent with an approximate 1:1 mixture of lower crustal material like that found elsewhere on the moon and mantle rock containing 10-16 wt pct FeO and below 0.1 wt pct TiO2. Although mantle rock appears to compose about 50 percent of the floor deposits, models of the formation of large impact basins predict that virtually all the floor materials ought to be derived from the mantle.
Hawke Bernard Ray
Jeffrey Taylor G.
Lucey Paul G.
Spudis Paul D.
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