A5085920123- Planetary Science and Exploration
- Astro and Planetary Science
- Space Exploration and Technology
- Geological and Geochemical Analysis
- Space Science and Extraterrestrial Life
- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Marine and environmental studies
- Geochemistry and Elemental Analysis
- Geomagnetism and Paleomagnetism Studies
- Isotope Analysis in Ecology
- Clay minerals and soil interactions
- High-pressure geophysics and materials
- nanoparticles nucleation surface interactions
- Spectroscopy Techniques in Biomedical and Chemical Research
- Historical and Architectural Studies
- Electrochemical sensors and biosensors
- Magnesium Oxide Properties and Applications
- Science Education and Perceptions
- Evolution and Science Education
- Animal and Plant Science Education
- Space exploration and regulation
- Layered Double Hydroxides Synthesis and Applications
- Geological and Geophysical Studies Worldwide
- Urological Disorders and Treatments
Johnson Space Center
2020-2024
Lunar and Planetary Institute
2020-2024
Goddard Space Flight Center
2023
University of New Mexico
2023
University of Aizu
2023
Johns Hopkins University Applied Physics Laboratory
2023
University of Notre Dame
2023
Washington University in St. Louis
2023
University of Maryland, College Park
2023
Universities Space Research Association
2020-2023
Research Article| December 01, 2023 Lunar Mare Basaltic Volcanism: Volcanic Features and Emplacement Processes James W. Head; Head Department of Earth, Environmental Planetary Sciences, Brown University, Providence, RI 02912, USA Search for other works by this author on: GSW Google Scholar Lionel Wilson; Wilson Lancaster Environment Centre, Lancaster, LA1 4YQ, UK Harald Hiesinger; Hiesinger Institut für Planetologie, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Str. 10, 48149 Münster,...
Research Article| December 01, 2023 Magmatic Evolution I: Initial Differentiation of the Moon Amy M. Gaffney; Gaffney Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA gaffney1@llnl.gov Search for other works by this author on: GSW Google Scholar Juliane Gross; Gross Department Earth Planetary Sciences, Rutgers, The State University New Jersey, Piscataway, NJ 08854, USADepartment American Museum Natural History, York, NY 10024, USALunar...
A robust assessment is made of the distribution and (spatially resolved) geologic context for newly identified rock type on Moon, a Mg-spinel-bearing anorthosite (pink-spinel anorthosite, PSA). Essential criteria confirmed detection Mg-spinel using spectroscopic techniques are presented these applied to recent data from Moon Mineralogy Mapper. Altogether, 23 regions containing exposures new identified. All in highly feldspathic terrain small-a few hundred meters-but distinct verifiable, most...
Research Article| December 01, 2023 Magmatic Evolution II: A New View of Post-Differentiation Magmatism Charles Shearer; Shearer Institute Meteoritics, University Mexico, Albuquerque, NM 87122, USALunar & Planetary Institute, Universities Space Association, Houtson, TX 77058, USA Designated chapter co-leads: cshearer@unm.edu Search for other works by this author on: GSW Google Scholar Clive R. Neal; Neal Department Civil and Environmental Engineering Earth Science Notre Dame Dame, IN 46556,...
Abstract The petrogenetic models of the lunar crust are built on returned Apollo and Luna samples collected from limited parts nearside that chemically unusual (i.e., material rich in K, Rare Earth Elements, P [KREEP]) not representative entire lithologic suite. Mg‐suite is part this sample collection ubiquitously has geochemical characteristics indicating involvement KREEP their petrogenesis seemed to be linked Procellarum Terrain (PKT). However, it unclear if necessary for magmatism or...
Two competing hypotheses suggest lunar Mg-suite parental melts formed: (1) by shallow-level partial melting of a hybridized source region (containing ultramafic cumulates, plagioclase-bearing rocks, and KREEP), producing plagioclase-saturated, MgO-rich melt, or (2) when plagioclase-undersaturated, were brought to plagioclase saturation during magma-wallrock interactions within the anorthositic crust. To further constrain existing models, phase equilibria experiments have been performed on...
Geochronology indicates a rapid transition (tens of Myrs) from primary to secondary crust building on the Moon. The processes responsible for initiating magmatism, however, remain in debate. Here we test hypothesis that earliest (Mg-suite) formed as direct consequence density-driven mantle overturn, and advance 3D convection models quantify resulting extent lower melting. Our modeling demonstrates overturn thin ilmenite-bearing cumulates ≤ 100 km triggers short-lived episode melting which...
Visible to near-infrared (V-NIR) remote sensing observations have identified spinel in various locations and lithologies on the Moon. Experimental studies quantified FeO content of these spinels (Jackson et al. 2014), however chromite component is not well constrained. Here we present compositional spectral analyses synthesized with varying chromium contents at lunar-like oxygen fugacity (fO2). Reflectance spectra chromium-bearing synthetic (Cr# 1–29) a narrow (~130 nm wide) absorption...
Abstract The magnesian suite (Mg‐suite) of rocks record some the earliest intrusive magmatism on Moon. Studies these Mg‐suite find they are plutonic or hypabyssal, formed typically kilometers under lunar surface. Several models exist to explain formation and evolution but distinguishing between hypotheses can be difficult given limited sample availability. global extent remains in debate is key constraining early secondary crust building. In this study, we present clasts within Apollo impact...
Though the lunar samples returned by Apollo and Luna missions have been studied for more than 50 years, scientists are discovering new clues into early evolution of Moon looking through lens modern analytical techniques.
Abstract Investigations of trapped melt inclusions in minerals can yield insights into the compositions and conditions parent magmas. These are particularly important for detrital grains like many lunar zircons found samples returned by Apollo missions. However, unlike their terrestrial counterparts, have potentially been exposed to billions years impact bombardment. Samples from structures shock experiments revealed that deformation during an event produces glass blebs mimic igneous both...
Abstract MS‐MU‐012, a 15.5 g clast from the Almahata Sitta polymict ureilite, is first known plagioclase‐bearing main group ureilite. It coarse‐grained (up to 4 mm), equilibrated assemblage of 52% olivine (Fo 88), 13% orthopyroxene (Mg# 89.2, Wo 4.5), 11% augite 90.2, 37.3), and 14% plagioclase (An 68), plus minor metal sulfide. The grains have been secondarily remelted internally recrystallized, but retain primary external morphologies. Melt inclusions occur in olivine. Rounded chadocrysts...
Abstract We conducted a petrologic study of apatite within one LL chondrite, six R chondrites, and CK chondrites. These data were combined with previously published from broader range chondrite meteorites to determine that chondrites host either chlorapatite or hydroxylapatite ≤33 mol% F in the X-site (unless affected by partial melting impacts, which can cause F-enrichment residual apatite). indicate fluorapatite was not primary condensate solar nebula it did survive lower temperature...