Comparative petrology, geochemistry, and petrogenesis of evolved, low-Ti lunar mare basalt meteorites from the LaPaz Icefield, Antarctica

Day, James M.D.; Taylor, L. A.; Floss, C.; Patchen, A. D.; Schnare, D. W.; Pearson, D. Graham

doi:10.1016/j.gca.2005.11.015

Cited by 81 publications

(162 citation statements)

References 39 publications

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“…The compositions of these inclusions are similar to the composition of K-Si-rich glass described in previous studies (Anand et al, 2006;Day et al, 2006;Righter et al, 2005;Zeigler et al, 2005). The K-Si-rich glass is restricted to the mesostasis areas in LAP 02205, often in symplectitic intergrowth with fayalitic olivine, and associated with phases that appear late in a basaltic crystallizing sequence such as Fe-pyroxenes, free silica, and troilite.…”

Section: Petrology and Geochemistry Of Lap 02205supporting

confidence: 80%

“…The calculated concentrations of 191 to 10361 ppm Nd in the leachates are consistent with predominant leaching of phosphate phases (merrillite, fluorapatite) that contain 2700 to 15000 ppm neodymium (Anand et al, 2006;Day et al, 2006;Zeigler et al, 2005).…”

Section: Major and Trace Elementssupporting

confidence: 61%

“…This observation is substantiated by the absence of Ce anomalies in individual mineral phases (Anand et al, 2006), which may result from terrestrial weathering in the Antarctic environment (Crozaz et al, 2003). For detailed petrographic descriptions of the LAP stones see Anand et al (2006), Day et al (2006), Joy et al (2006), Righter et al (2005) and Zeigler et al (2005).…”

Section: Petrology and Geochemistry Of Lap 02205mentioning

confidence: 88%

“…In terms of its modal mineralogy, LAP 02205 mainly consists of pyroxene (57 vol%), plagioclase (33 vol%), minor ilmenite, silica, olivine, phosphates, and melt glass. There is no petrographic evidence for terrestrial weathering of LAP 02205 such as calcite, clay deposits or oxidized mineral rims (Anand et al, 2006;Day et al, 2006). This observation is substantiated by the absence of Ce anomalies in individual mineral phases (Anand et al, 2006), which may result from terrestrial weathering in the Antarctic environment (Crozaz et al, 2003).…”

Section: Petrology and Geochemistry Of Lap 02205mentioning

confidence: 99%

“…First, the occurrence of 0.3 to 0.7 percent by volume (vol%) of primary magmatic phosphate minerals in the groundmass of LAP 02205 (Anand et al, 2006;Day et al, 2006;Righter et al, 2005;Zeigler et al, 2005). These phosphates constitute the main host for the whole rock REE budget of LAP 02205.…”

Section: Petrology and Geochemistry Of Lap 02205mentioning

confidence: 99%

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A Rb–Sr and Sm–Nd isotope geochronology and trace element study of lunar meteorite LaPaz Icefield 02205

Rankenburg

Brandon

Norman

2007

Geochimica et Cosmochimica Acta

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Section: Petrology and Geochemistry Of Lap 02205supporting

confidence: 80%

Section: Major and Trace Elementssupporting

confidence: 61%

Section: Petrology and Geochemistry Of Lap 02205mentioning

confidence: 88%

Section: Petrology and Geochemistry Of Lap 02205mentioning

confidence: 99%

Section: Petrology and Geochemistry Of Lap 02205mentioning

confidence: 99%

See 3 more Smart Citations

A Rb–Sr and Sm–Nd isotope geochronology and trace element study of lunar meteorite LaPaz Icefield 02205

Rankenburg

Brandon

Norman

2007

Geochimica et Cosmochimica Acta

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New Insights Into Lithology Distribution Across the Moon

Wang

Zhao

2017

JGR Planets

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Lithology distribution across the Moon is pivotal for understanding lunar evolution. However, so far, the distribution of lunar rock suites is still uncertain; as a result, many related core issues on lunar evolution have long been in dispute. This work reports on a new lithology distribution map across the Moon and discusses some critical issues of the lunar evolutionary process. The oxide abundances derived from Chang'E‐1 Interference Imaging Spectrometer imagery and the Th contents inferred by Lunar Prospector Gamma Ray and Neutron Spectrometer data are employed to generate the lithological map by using the decision tree C5.0 algorithm. The following conclusions are inferred from this new map. (1) Magnesian suite is widely distributed across the Feldspathic Highlands Terrane and in the periphery of the South Pole‐Aitken Terrane. Thus, the viewpoints have been validated that the early magnesian magmatism may be a global phenomenon and that KREEP basalt is not necessary for the petrogenesis of Mg‐rich rocks. Moreover, the regions of Dryden, Chaffee S, Theophilus, and Moscoviense are confirmed as magnesian suite exposures. (2) The observation that the Feldspathic Highlands Terrane has a higher Mg/(Mg + Fe) value than the maria is related to the flood of the Mg suite across the Feldspathic Highlands Terrane. (3) The specific exposed locations of the alkali suite across the Moon have long been unsolved, and this work discloses that the alkali suite prevails in the outskirts of the Procellarum KREEP Terrane, the center of the South Pole‐Aitken Terrane, and some isolated locales. (4) Focusing on distinguishing mare basalts from other mafic rocks, seven geochemical indices are proposed to determine the potential exposures of mare basalts across the Moon. (5) In Mare Insularum, a series of KREEP volcanisms may have occurred and lasted longer than the mare volcanism.

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ANSMET Meteorites from the Moon

Korotev

Zeigler

2014

Special Publications

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Comparative petrology, geochemistry, and petrogenesis of evolved, low-Ti lunar mare basalt meteorites from the LaPaz Icefield, Antarctica

Cited by 81 publications

References 39 publications

A Rb–Sr and Sm–Nd isotope geochronology and trace element study of lunar meteorite LaPaz Icefield 02205

A Rb–Sr and Sm–Nd isotope geochronology and trace element study of lunar meteorite LaPaz Icefield 02205

New Insights Into Lithology Distribution Across the Moon

ANSMET Meteorites from the Moon

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