Results 61 to 70 of about 7,944 (214)
Origin of 182W Anomalies in Ocean Island Basalts
Geochemistry, Geophysics, Geosystems, 2023 Ocean island basalts (OIB) show variable 182W deficits that have been attributed to either early differentiation of the mantle or core‐mantle interaction.
Gregory J. Archer +5 more
doaj +1 more source
Thermal Alteration of Labile Elements in Carbonaceous Chondrites
, 2018 Carbonaceous chondrite meteorites are some of the oldest Solar System planetary materials available for study. The CI group has bulk abundances of elements similar to those of the solar photosphere.
Andronikov, Alexandre +6 more
core +1 more source
Atmospheric dust is a global nutrient source for plants via foliar uptake
New Phytologist, EarlyView.Summary Atmospheric mineral dust is a critical nutrient supplier to marine ecosystems, but its role in terrestrial plant nutrition remains underexplored due to the assumption that nutrients are acquired solely from soils via roots. Here, we demonstrate that plants directly acquire nutrients from dust through leaves, revealing an unrecognized ...
Anton Lokshin +5 more
wiley +1 more source
Sedimentology, EarlyView.ABSTRACT The integrated analysis of lithofacies, mineralogy and geochemistry of the hemipelagic marine succession exposed in La Cerradura section (South‐Iberian Palaeomargin) provides new information to characterise the palaeoenvironmental conditions during the latest Pliensbachian to early Toarcian, including the Jenkyns Event.
Chaima Ayadi +4 more
wiley +1 more source
A new CH carbonaceous chondrite from Acfer, Algeria [PDF]
, 2006 A single stone weighing 1456 g was found in November 2002 in the Acfer area, Algeria. Oxygen isotope, chondrules-matrix ratio as well as other petrographic features point to a classification as CH carbonaceous ...
Franchi, Ian +4 more
core
Nature's Starships II: Simulating the Synthesis of Amino Acids in Meteorite Parent Bodies
, 2015 Carbonaceous chondrite meteorites are known for having high water and organic material contents, including amino acids. Here we address the origin of amino acids in the warm interiors of their parent bodies (planetesimals) within a few million years of ...
Cobb, Alyssa K. +2 more
core +1 more source
Earth, Planets and Space, 2018 We measured the abundances of Sr and rare earth elements (REEs) in the matrices of five CV3 carbonaceous chondrites: Meteorite Hills (MET) 00430, MET 01070, La Paz ice field (LAP) 02206, Asuka (A) 881317 and Roberts Massif (RBT) 04143.
Kaori Jogo +4 more
doaj +1 more source
Unique evidence of fluid alteration in the Kakowa (L6) ordinary chondrite
Scientific Reports, 2022 Meteorites preserve evidence of processes on their parent bodies, including alteration, metamorphism, and shock events. Here we show that the Kakowa (L6) ordinary chondrite (OC) preserves both shock-melt veins and pockets of detrital grains from a ...
I. P. Baziotis +8 more
doaj +1 more source
Mineralogical Characterization of Baptistina Asteroid Family: Implications for K/T Impactor Source
, 2011 Bottke et al. (2007) linked the catastrophic formation of Baptistina Asteroid Family (BAF) to the K/T impact event. This linkage was based on dynamical and compositional evidence, which suggested the impactor had a composition similar to CM2 carbonaceous
Candal, Alvaro Alvarez +10 more
core +1 more source
The Planetary Science JournalSurfaces of carbonaceous asteroids (C-complex) have shown diverse, contrasting spectral variations, which may be related to space weathering. We performed laser irradiation experiments on CI and CM simulant material under vacuum to mimic the spectral ...
Andy J. López-Oquendo +2 more
doaj +1 more source