Where Is the Lunar Mantle and Deep Crust at Crisium? A Perspective From the Luna 20 Samples

Remote sensing observations have been interpreted to indicate that the Crisium basin‐forming event excavated deep crust and upper mantle. Samples from the highlands adjacent to the Crisium basin returned by Luna 20 (L‐20) bring a unique perspective for evaluating this concept. The magmatic lithologi...

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Bibliographic Details
Published in:Journal of geophysical research. Planets 2023-05, Vol.128 (5), p.n/a
Main Authors: Shearer, C. K., Moriarty, D. P., Simon, S. B., Petro, N., Papike, J. J.
Format: Article
Language:English
Subjects:
Crisium basin
Crystallization
Data collection
Earth
Excavation
ferroan anorthosites
Impact melts
Inclusions
Lava
Luna 20
Lunar crust
lunar crust and mantle
Lunar geology
lunar highlands
Lunar mantle
Lunar soil
Magma
Mg‐suite
Moon
Oceans
Olivine
Remote sensing
Rocks
Sample return missions
Terrain
U.S.S.R. space program
Ultramafic materials
Upper mantle
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Summary:Remote sensing observations have been interpreted to indicate that the Crisium basin‐forming event excavated deep crust and upper mantle. Samples from the highlands adjacent to the Crisium basin returned by Luna 20 (L‐20) bring a unique perspective for evaluating this concept. The magmatic lithologies returned from the noritic Hilly and Furrowed Terrain (nHFT) by L‐20 are coarse‐grained feldspar (>300 μm) with inclusions of pyroxene, and finer‐grained norites, troctolites, spinel troctolites, and gabbros (
ISSN:2169-9097
2169-9100
DOI:10.1029/2022JE007409