Results 71 to 80 of about 9,703 (232)
Stardust Mine: A 2024 gabbroic shergottite from Arizona, USA
Meteoritics &Planetary Science, EarlyView.Abstract This study provides an initial characterization of Stardust Mine, a fresh gabbroic enriched shergottite collected in Arizona, USA, in September 2024 and is the first Martian meteorite to be unequivocably collected on US soil. Analysis was conducted on the type specimen and finds that Stardust Mine is composed of equal proportions of pyroxene ...
Jennifer T. Mitchell +4 more
wiley +1 more source
, 2018 (Tabel S5a) Clinopyroxene-hosted melt inclusions, host clinopyroxene composition adjacent to inclusion, and thermobarometry of melt inclusion - host mineral ...
Melanie Siegburg (6968786) +7 more
core +1 more source
Geochemistry, Geophysics, Geosystems, 2023 Kimberlite‐borne eclogite xenoliths having Precambrian oceanic crustal protoliths and entrained from ≥100 km depth can retain pristine geochemical features despite extended residence in the cratonic lithospheric mantle, making them valuable archives of ...
Sonja Aulbach +5 more
doaj +1 more source
Geology of the central uplift of the Kamestastin Lake impact structure, Labrador, Canada
Meteoritics &Planetary Science, EarlyView.Abstract The ~28 km Kamestastin (Mistastin) Lake impact structure is a relatively well‐preserved and well‐exposed complex impact structure. The central uplift of this structure is accessible as two islands in the middle of Kamestastin Lake. We present an updated, detailed geological map and description of Horseshoe and Bullseye islands that provides ...
A. C. Singleton, G. R. Osinski
wiley +1 more source
(Table 1) Geochemistry of plagioclase microlyte in clinopyroxene megacryst in ODP Hole 140-504B
, 1995 (Table 1) Geochemistry of plagioclase microlyte in clinopyroxene megacryst in ODP Hole 140 ...
Henry J B Dick (6887306) +3 more
core +1 more source
The effect of fluorine on clinopyroxene/melt trace-element partitioning
, 2020 International audienceThe impact of fluorine on phase relations and clinopyroxene-melt element partitioning has been explored experimentally to better understand the effect of this halogen on the residual enrichment of the REE and HFSE during ...
van Hinsberg, Vincent J. +3 more
core +1 more source
The Lages diatremes: mineral composition and petrological implications
Anais da Academia Brasileira de Ciências, 2007 Chemical data of heavy minerals from Lages diatremes in southern Brazil have been studied with the aim of characterizing the sample source(s). Three groups of minerals are recognized: I) aluminian-chromian pyroxene, pyrope garnet and chromian spinel ...
Giancarlo Barabino +2 more
doaj +1 more source
Ductile Extrusion Triggered by Continental Collision in NE Brazil
Terra Nova, EarlyView.ABSTRACT The Borborema Province in northeastern Brazil hosts one of the world's largest strike‐slip shear zone networks, active during the late Neoproterozoic assembly of West Gondwana. Whether these shear zones initiated during active continental collision or as a post‐orogenic response to far‐field stresses remains debated.
L. R. Tesser +6 more
wiley +1 more source
, 2015 [EN] Major and trace element chemistry has been determined in the main minerals (olivine, orthopyroxene, clinopyroxene, plagioclase, amphibole, phlogopite) from the Talavera and La Solanilla gabbroic intrusions (Spanish Central System). The results show
Jeffries, T. E. +11 more
core +1 more source
Crystal growth of clinopyroxene in mafic alkaline magmas
, 2021 Recent experimental and natural studies have shown that igneous crystals can start to crystallize through skeletal or dendritic growth, and then backfill progressively to form polyhedral crystal morphologies, in contrast to the traditional tree-ring ...
Zhou, Jin-Sheng +7 more
core +1 more source