Compositional and lithological diversity among brecciated lunar meteorites of intermediate iron concentration
Abstract— We present new compositional data for 30 lunar stones representing about 19 meteorites. Most have iron concentrations intermediate to those of the numerous feldspathic lunar meteorites (3–7% FeO) and the basaltic lunar meteorites (17–23% FeO). All but one are polymict breccias. Some, as im...
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crwiley:10.1111/j.1945-5100.2009.tb01223.x 2024-06-23T07:56:50+00:00 Compositional and lithological diversity among brecciated lunar meteorites of intermediate iron concentration Korotev, Randy L. Zeigler, Ryan A. Jolliff, Bradley L. Irvin, Anthony J. Bunch, Theodore E. 2009 http://dx.doi.org/10.1111/j.1945-5100.2009.tb01223.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.2009.tb01223.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.2009.tb01223.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Meteoritics & Planetary Science volume 44, issue 9, page 1287-1322 ISSN 1086-9379 1945-5100 journal-article 2009 crwiley https://doi.org/10.1111/j.1945-5100.2009.tb01223.x 2024-06-06T04:22:16Z Abstract— We present new compositional data for 30 lunar stones representing about 19 meteorites. Most have iron concentrations intermediate to those of the numerous feldspathic lunar meteorites (3–7% FeO) and the basaltic lunar meteorites (17–23% FeO). All but one are polymict breccias. Some, as implied by their intermediate composition, are mainly mixtures of brecciated anorthosite and mare basalt, with low concentrations of incompatible elements such as Sm (1–3 μg/g). These breccias likely originate from points on the Moon where mare basalt has mixed with material of the FHT (Feldspathic Highlands Terrane). Others, however, are not anorthosite‐basalt mixtures. Three (17–75 μ/g Sm) consist mainly of nonmare mafic material from the nearside PKT (Procellarum KREEP Terrane) and a few are ternary mixtures of material from the FHT, PKT, and maria. Some contain mafic, nonmare lithologies like anorthositic norites, norites, gabbronorites, and troctolite. These breccias are largely unlike breccias of the Apollo collection in that they are poor in Sm as well as highly feldspathic anorthosite such as that common at the Apollo 16 site. Several have high Th/Sm compared to Apollo breccias. Dhofar 961, which is olivine gabbronoritic and moderately rich in Sm, has lower Eu/Sm than Apollo samples of similar Sm concentration. This difference indicates that the carrier of rare earth elements is not KREEP, as known from the Apollo missions. On the basis of our present knowledge from remote sensing, among lunar meteorites Dhofar 961 is the one most likely to have originated from South Pole‐Aitken basin on the lunar far side. Article in Journal/Newspaper South pole Wiley Online Library Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) South Pole Meteoritics & Planetary Science 44 9 1287 1322 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract— We present new compositional data for 30 lunar stones representing about 19 meteorites. Most have iron concentrations intermediate to those of the numerous feldspathic lunar meteorites (3–7% FeO) and the basaltic lunar meteorites (17–23% FeO). All but one are polymict breccias. Some, as implied by their intermediate composition, are mainly mixtures of brecciated anorthosite and mare basalt, with low concentrations of incompatible elements such as Sm (1–3 μg/g). These breccias likely originate from points on the Moon where mare basalt has mixed with material of the FHT (Feldspathic Highlands Terrane). Others, however, are not anorthosite‐basalt mixtures. Three (17–75 μ/g Sm) consist mainly of nonmare mafic material from the nearside PKT (Procellarum KREEP Terrane) and a few are ternary mixtures of material from the FHT, PKT, and maria. Some contain mafic, nonmare lithologies like anorthositic norites, norites, gabbronorites, and troctolite. These breccias are largely unlike breccias of the Apollo collection in that they are poor in Sm as well as highly feldspathic anorthosite such as that common at the Apollo 16 site. Several have high Th/Sm compared to Apollo breccias. Dhofar 961, which is olivine gabbronoritic and moderately rich in Sm, has lower Eu/Sm than Apollo samples of similar Sm concentration. This difference indicates that the carrier of rare earth elements is not KREEP, as known from the Apollo missions. On the basis of our present knowledge from remote sensing, among lunar meteorites Dhofar 961 is the one most likely to have originated from South Pole‐Aitken basin on the lunar far side. |
format |
Article in Journal/Newspaper |
author |
Korotev, Randy L. Zeigler, Ryan A. Jolliff, Bradley L. Irvin, Anthony J. Bunch, Theodore E. |
spellingShingle |
Korotev, Randy L. Zeigler, Ryan A. Jolliff, Bradley L. Irvin, Anthony J. Bunch, Theodore E. Compositional and lithological diversity among brecciated lunar meteorites of intermediate iron concentration |
author_facet |
Korotev, Randy L. Zeigler, Ryan A. Jolliff, Bradley L. Irvin, Anthony J. Bunch, Theodore E. |
author_sort |
Korotev, Randy L. |
title |
Compositional and lithological diversity among brecciated lunar meteorites of intermediate iron concentration |
title_short |
Compositional and lithological diversity among brecciated lunar meteorites of intermediate iron concentration |
title_full |
Compositional and lithological diversity among brecciated lunar meteorites of intermediate iron concentration |
title_fullStr |
Compositional and lithological diversity among brecciated lunar meteorites of intermediate iron concentration |
title_full_unstemmed |
Compositional and lithological diversity among brecciated lunar meteorites of intermediate iron concentration |
title_sort |
compositional and lithological diversity among brecciated lunar meteorites of intermediate iron concentration |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1111/j.1945-5100.2009.tb01223.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.2009.tb01223.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.2009.tb01223.x |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) |
geographic |
Aitken South Pole |
geographic_facet |
Aitken South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Meteoritics & Planetary Science volume 44, issue 9, page 1287-1322 ISSN 1086-9379 1945-5100 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1945-5100.2009.tb01223.x |
container_title |
Meteoritics & Planetary Science |
container_volume |
44 |
container_issue |
9 |
container_start_page |
1287 |
op_container_end_page |
1322 |
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1802650201835438080 |