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Masters_Thesis_Jared Brum_FINAL.pdf (25.67 MB)
ETD Abstract Container
Abstract Header
New Insights Into the Petrogenesis of Lunar Meteorite Allan Hills 81005 (ALHA81005)
Author Info
Brum, Jared Thomas
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=miami165062830881624
Abstract Details
Year and Degree
2022, Master of Science, Miami University, Geology and Environmental Earth Science.
Abstract
Observations of Allan Hills 81005 via PLM and SEM-EDS are consistent with the classification of anorthositic regolith breccia. Clasts of anorthosite, basalt, granulite, and impact melt breccia are present. The brecciated matrix is dominated by plagioclase, minor (clino)pyroxene, and rarer olivine in addition to trace oxides and sulfides. Phosphates, spinels, glass spherules, and crystalline spherules are rare and not ubiquitous in studied sections. In section -92, a spinel-bearing dunite clast is present alongside several pink spinel-bearing troctolitic clasts. The composition of dunitic olivines is consistent with the lunar Mg-suite as exemplified by Mg#, CaO, Cr, and Mn systematics. Compositions also overlap with those from dunite sample 72417. Both are distinct from non Mg-suite dunites in 74275 and the modeled composition of early-formed LMO cumulates. Spinels within the dunite clast are also consistent with spinels within Mg-suite dunites (Mg# ~50, Cr# ~70) while troctolitic pink are consistent with Mg-suite spinel troctolites (Mg# ~70-80, Cr# <10). Collectively, the clast and mineral assemblages support an origin of ALHA81005 from the lunar highlands. The observation of a lunar dunite contributes to our understanding of Mg-suite magmatism during lunar differentiation.
Committee
Dr. Claire McLeod (Advisor)
Dr. Mark Krekeler (Committee Member)
Dr. John Rakovan (Committee Member)
Pages
72 p.
Subject Headings
Chemistry
;
Geochemistry
;
Geological
;
Mineralogy
;
Petrology
;
Planetology
;
Remote Sensing
;
Scientific Imaging
Keywords
meteorite
;
Allan Hills 81005
;
Allan Hills
;
81005
;
dunite
;
spinels
;
pink-spinel troctolite
;
Mg-suite
;
moon
;
lunar
Recommended Citations
Refworks
EndNote
RIS
Mendeley
Citations
Brum, J. T. (2022).
New Insights Into the Petrogenesis of Lunar Meteorite Allan Hills 81005 (ALHA81005)
[Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami165062830881624
APA Style (7th edition)
Brum, Jared.
New Insights Into the Petrogenesis of Lunar Meteorite Allan Hills 81005 (ALHA81005).
2022. Miami University, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=miami165062830881624.
MLA Style (8th edition)
Brum, Jared. "New Insights Into the Petrogenesis of Lunar Meteorite Allan Hills 81005 (ALHA81005)." Master's thesis, Miami University, 2022. http://rave.ohiolink.edu/etdc/view?acc_num=miami165062830881624
Chicago Manual of Style (17th edition)
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Document number:
miami165062830881624
Download Count:
236
Copyright Info
© 2022, some rights reserved.
New Insights Into the Petrogenesis of Lunar Meteorite Allan Hills 81005 (ALHA81005) by Jared Thomas Brum is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Miami University and OhioLINK.