Petrogenesis of the Apollo 14 high-alumina basalts: Implications from ion microprobe analyses

Details Petrogenesis of the Apollo 14 high-alumina basalts: Implications from ion microprobe analyses Petrogenesis of the Apollo 14 high-alumina basalts: Implications from ion microprobe analyses

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005gecoa..69.5831h&link_type=abstract

Geochimica et Cosmochimica Acta, Volume 69, Issue 24, p. 5831-5845.

Other

6

Scientific paper

In this study, ion microprobe analyses of individual minerals are used to investigate the petrogenesis of the Apollo 14 high-Al basalts. We use trace element concentrations from individual minerals in the Apollo 14 high-Al basalts to evaluate both endogenic and exogenic models. The data show that if the Apollo 14 high-Al basalts were produced by melting within the lunar mantle, these basalts cannot be related to one another by closed-system fractional crystallization of a single basaltic melt. Rather, the trace element data show that variable amounts of a KREEP component were added to the basalts by either assimilation, mixing into mantle sources, or impact melting. Single-stage assimilation fractional crystallization models can only explain the data from this study if an excessively large mass of urKREEP is assimilated into the parent magma before olivine crystallization. Alternatively, the trace element data can be explained if the Apollo 14 high-Al basalts were produced by melting multiple Al-rich mantle sources that contain different amounts of urKREEP. Finally, for impact melting to be a relevant process, the data require that multiple large impact melts be formed from mixed KREEP-rich target lithologies. The resulting impact melts must then crystallize to produce basalts with igneous textures, high Al2O3 concentrations, uniform major element compositions, and a wide range of incompatible trace element concentrations.

Affiliated with

Also associated with

No associations

Rating

Petrogenesis of the Apollo 14 high-alumina basalts: Implications from ion microprobe analyses 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 Petrogenesis of the Apollo 14 high-alumina basalts: Implications from ion microprobe analyses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Petrogenesis of the Apollo 14 high-alumina basalts: Implications from ion microprobe analyses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1432135