Apollo 15 yellow-brown volcanic glass: Chemistry and petrogenetic relations to green volcanic glass and olivine-normative mare basalts

Journal Article · Sat Oct 01 04:00:00 EDT 1988 · Geochimica et Cosmochimica Acta; (USA)

DOI:https://doi.org/10.1016/0016-7037(88)90295-5· OSTI ID:5221516

Hughes, S S; Schmitt, R A; Delano, J W ^[1]

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1. State Univ. of New York, Albany (USA)

Apollo 15 yellow-brown glass is one of twenty-five, high Mg, primary magmas emplaced on the lunar surface in pyroclastic eruptions. Forty spherules of this glass were individually analyzed by electron microprobe and INAA for major- and trace-elements. The abundances demonstrate that this primary magma was produced by partial melting of differentiated cumulates in the lunar mantle. Models are developed to explain the possible source-regions of several Apollo 15 and Apollo 12 low-Ti mare magmas as being products of hybridization involving three ancient differentiated components of a primordial lunar magma ocean: (a) early olivine {plus minus} orthopyroxene cumulates; (b) late-stage clinopyroxene + pigeonite + ilmenite + plagioclase cumulates; and (c) late-stage inter-cumulus liquid.

• OSTI ID: 5221516
• Journal Information: Geochimica et Cosmochimica Acta; (USA), Journal Name: Geochimica et Cosmochimica Acta; (USA) Vol. 52:10; ISSN GCACA; ISSN 0016-7037
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580000* -- Geosciences
ALKALINE EARTH METAL COMPOUNDS
AMORPHOUS STATE
APOLLO PROJECT
BASALT
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CHEMISTRY
ELECTRON MICROPROBE ANALYSIS
ERUPTION
GEOCHEMISTRY
GEOLOGIC MODELS
GLASS
IGNEOUS ROCKS
IRON COMPOUNDS
IRON SILICATES
ISOTOPE RATIO
LUNAR MATERIALS
MAGMATISM
MAGNESIUM COMPOUNDS
MAGNESIUM SILICATES
MATERIALS
MICROANALYSIS
MINERALOGY
MINERALS
OLIVINE
OXYGEN COMPOUNDS
PETROGENESIS
PYROXENES
QUANTITATIVE CHEMICAL ANALYSIS
ROCKS
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VOLCANIC ROCKS