Results 61 to 70 of about 1,225 (202)
Correlated Molybdenum, Ruthenium, and Barium Isotope Anomalies in Presolar Silicon Carbide Grains
The Astrophysical JournalWe have analyzed molybdenum, ruthenium, and barium isotopes simultaneously in 55 individual presolar silicon carbide (SiC) grains from the Murchison CM2 meteorite using the Chicago Instrument for Laser Ionization (or CHILI).
Thomas Stephan +5 more
doaj +1 more source
Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.Abstract Earth's presently‐active magnetic field is thought to be generated by geodynamo via convection of liquid outer core, primarily composed of Fe alloyed with Ni and light elements, for example, Si. Core thermal conductivity critically controls its thermal evolution, dynamics, and available energy (thermal vs. compositional) powering the geodynamo
Wen‐Pin Hsieh +6 more
wiley +1 more source
Reviewing Martian Atmospheric Noble Gas Measurements: From Martian Meteorites to Mars Missions
Geosciences, 2020 Martian meteorites are the only samples from Mars available for extensive studies in laboratories on Earth. Among the various unresolved science questions, the question of the Martian atmospheric composition, distribution, and evolution over geological ...
Thomas Smith +3 more
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Analytical methods for geochemistry and cosmochemistry
This concept scheme contains skos concepts for analysis methods used to produce observation results with information about the physical properties, chemical or isotopic composition, crystallography, or molecular structure of material samples.
Luzi-Helbing, Manja +10 more
core +2 more sources
Nucleosynthesis in Type Ia Supernovae, Classical Novae, and Type I X-Ray Bursts. A Primer on Stellar Explosions [PDF]
EPJ Web of ConferencesNuclear astrophysics aims at unraveling the cosmic origins of chemical elements and the physical processes powering stars. It constitutes a truly multidisciplinary field, that integrates tools, advancements, and accomplishments from theoretical ...
José Jordi
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Looking for the origin of life in cosmochemistry: Asteroids and their carbon-rich meteorites
Mètode Science Studies Journal: Annual Review, 2016 Carbonaceous chondrite meteorites are carbon-containing fragments of primitive asteroids that have offered the only samples available to date giving insights into chemical evolution in laboratory analyses.
Sandra Pizzarello
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Geologica Acta, 2009 The black marl of the Fish Clay at Højerup is mainly made up of biogenic calcite and cheto-Mg-smectite. We suggest that the formation of the smectite occurred during the latest Maastrichtian (or earlier) and that it represents a short period of rapid ...
P.I. PREMOVIC +2 more
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Radial Breathing Modes in Cosmochemistry and Meteoritics [PDF]
, 2009 One area of continuing interest in cosmochemistry and meteoritics (C&M) is the identification of the nature of Q-phase, although some researchers in C&M are not reporting relevant portions of Raman spectral data.
Wilson, K.B., Wilson, T.L.
core
NWA 11562: A Unique Ureilite with Extreme Mg-rich Constituents
The Planetary Science JournalA comprehensive study of an ungrouped achondrite meteorite, North West Africa (NWA) 11562, was conducted, involving petrology, mineralogy, and mass-independent chromium isotopic composition. NWA 11562 comprises 34.9 vol% olivine, 56.1 vol% pyroxenes, 6.7
Mingbao Li +6 more
doaj +1 more source
Overview on the Re-Os isotopic method and its application on ore deposits and organic-rich rocks [PDF]
Geochimica Brasiliensis, 2013 The Re-Os method has in the last twenty years experienced outstanding improvements and is now widely applied in earth science studies. The unique geochemical characteristics of the isotopic pair allow its application on investigations that vary from ...
Juliana Charão Marques
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