Chemistry of the Calcalong Creek lunar meteorite and its relationship to lunar terranes

Details Chemistry of the Calcalong Creek lunar meteorite and its relationship to lunar terranes Chemistry of the Calcalong Creek lunar meteorite and its relationship to lunar terranes

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003m%26ps...38..595h&link_type=abstract

Meteoritics &Planetary Science, vol. 38, no. 4, p.595-626

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10

Scientific paper

The Calcalong Creek lunar meteorite is a polymict breccia that contains clasts of both highlands and mare affinity. Reported here is a compilation of major, minor, and trace element data for bulk, clast, and matrix samples determined by instrumental neutron activation analysis (INAA). Petrographic information and results of electron microprobe analyses are included. The relationship of Calcalong Creek to lunar terranes, especially the Procellarum KREEP Terrane and Feldspathic Highlands Terrane, is established by the abundance of thorium, incompatible elements and their KREEP-like CI chondrite normalized pattern, FeO, and TiO2. The highlands component is associated with Apollo 15 KREEP basalt but represents a variant of the KREEP-derived material widely found on the moon. Sources of Calcalong Creek's mare basalt components may be related to low-titanium (LT) and very low-titanium (VLT) basalts seen in other lunar meteorites but do not sample the same source. The content of some components of Calcalong Creek are found to display similarities to the composition of the South Pole-Aitken Terrane. What appear to be VLT relationships could represent new high aluminum, low titanium basalt types.

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