Meeting Planning Services

8:30 AM

Stadermann A. C.* McCubbin F. M. Eckley S. A. O'Neal E. W. Iacovino K. et al.

Olivine-Hosted Melt Inclusions Within Apollo Mg-Suite Troctolite 76535 [#6043]
We are investigating melt inclusions hosted in olivine in 76535 to characterize the parental magma composition and constrain models of Mg-suite formation.

8:45 AM

Florin G.* Gleißner P. Becker H.

Copper Isotopic Compositions in Mare Basalts Reveal Mantle Source Heterogeneities in the Moon [#6109]
We present new Cu isotope data for 30 Apollo mare basalts and discuss whether their isotopic composition is related to processes during formation of their mantle sources, basalt formation or accompanying volatility-related processes.

9:00 AM

Wilbur Z. E.* Barnes J. J. Eckley S. A. Erickson T. Domanik K. et al.

The Eruptive Histories of Compositionally and Texturally Diverse Low-Titanium Mare Basalts [#6110]
We present our study of apatite and metal chemistry in low-Ti Apollo 15 basalts. These measurements clarify the sources, crystallization, and eruptive histories of the studied basalts, which are placed within geologic context on the lunar surface.

9:15 AM

Zhang X. H.* Su F. He H. Y.

Dynamic Process of Lunar Regolith Unveiled by Chang’E 5 Plagioclase [#6284]
This study enhances our understanding of solar wind and micrometeorites interactions with lunar regolith, yielding crucial implications for deciphering the origin of the lunar atmosphere and the historical solar wind characteristics.

9:30 AM

Merle R. E.* Whitehouse M. J. Nemchin A. A. Deligny C. Kenny G. C. et al.

Deciphering the Origin of the Chemical Characteristics of the 3000 Ma-Old Chemical Group of Lunar Basalts [#6317]
We have determined age and Pb isotope ratios of five lunar basaltic meteorites using in-situ Pb-Pb SIMS method. The studied samples have same age, REE patterns, and initial Pb ratios and form a chemical group distinct from the other lunar basalts.

9:45 AM

Salin E.* Nemchin A. A. Norman M. D. Whitehouse M. J. Timms N. E.

U-Pb Ages of Volcanic and Impact Glass Beads from Apollo 11 Soil [#6246]
Impact and volcanic glasses from the lunar regolith carry unique information about processes on the Moon and contain small quantities of U, allowing to utilize U-Pb system to constrain the timing of eruptions and impact events on the Moon.

10:00 AM

Gleißner P.* Becker H.

Siderophile Volatile Elements in Lunar Low-Ti Mare Basalts: Constraints on Mantle Source Compositions [#6332]
Siderophile volatile element data on lunar low-Ti mare basalts reveal differences between mantle sources. New estimates on absolute source concentrations support the hypothesis of volatile loss prior to formation of the lunar mantle sources.

10:15 AM

Diaz C. A.* Flowers R. M. Crow C. A. Metcalf J. R. Economos R. et al.

Phosphate (U-Th)/He Thermochronology of Apollo 14 Melt Breccia 14311 [#6406]
Low-temperature thermochronology has the potential to decipher thermal histories related to impact events over vast timescales. We present initial results for the first lunar phosphate (U-Th)/He dating on an Apollo 14 melt-breccia.

10:30 AM

McFadden J. A.* Thompson M. S.

Surface Exposure Age Distribution of Space Weathered Regolith Grains from the Apollo 17 Mission [#6359]
We explore how SEP derived exposure ages for lunar regolith grains vary between soil maturity and the context of the Apollo 17 field site. At the time of submission, soil sample 72141 exhibits exposure up to ~7 Ma with a right skewed distribution.

10:45 AM

Lin Y.* Liu X. Gu L. Zhang C. Hao J. et al.

Separation and Classification of Meteorite Debris in Lunar Soils [#6012]
Two metal spheres were separated from Chang’e-5 lunar soils, classified as IICD and IAB, respectively. It demonstrates feasibility of determine type distribution of asteroids impacting Moon via in situ separation of metal in future lunar exploration.

11:00 AM

Ravy D. T.* Neave D. A. Joy K. H. Bell S. K. Hartley M. E.

Application of Clinopyroxene-Liquid Thermobarometers to Low-Ti Apollo 15 Mare Basalts [#6035]
The crystallization pressures and temperatures of lunar magmas remain uncertain. We apply terrestrial clinopyroxene-liquid thermobarometers to Apollo 15 mare basalts, assessing their relevance to lunar conditions.

11:15 AM

Alosius R. M. L.* Busemann H. Krietsch D. Maden C.

A High-Precision Isotope Investigation of Indigenous Krypton and Xenon Signatures in Lunar Mare Basalts [#6374]
We performed high-precision Kr and Xe isotope investigation on paired unbrecciated lunar mare basalts carrying a solar-like He and Ne signature. We determined the carrier phase to be black glass shock veins with solar-like Xe.

11:30 AM

Lagain A.* Devillepoix H. A. R. Vernazza P. Robertson D. Granvik M. et al.

Recalibration of the Lunar Chronology Due to Spatial Cratering-Rate Variability [#6118]
We demonstrate a significant spatial variability of the cratering rate on the Moon, by about a factor of 2 between ±60°N, 90°W and 0°N, 90°E. We propose a new cratering chronology model that accounts for these variations.

11:45 AM

Grèbol-Tomàs P.* Trigo-Rodríguez J. M. Ibáñez-Insa J. Peña-Asensio E. Cuscó R. et al.

Nanoindentation of Lunar Basalts: Mechanical Properties of the Northwest Africa 12008 Meteorite [#6334]
We have applied nanoindentation to study the mechanical properties of olivine in a lunar basalt. Our results show that the values of olivine hardness and reduced elastic modulus do depend on the mineral origin (lunar, terrestrial or asteroidal).