Tracing the Ingredients for a Habitable Earth from Interstellar Space through Planet Formation [PDF]
, 2015 We use the C/N ratio as a monitor of the delivery of key ingredients of life to nascent terrestrial worlds. Total elemental C and N contents, and their ratio, are examined for the interstellar medium, comets, chondritic meteorites and terrestrial planets;
Bergin, Edwin A. +4 more
core +2 more sources
Insights into secondary reactions occurring during atmospheric ablation of micrometeoroids [PDF]
, 2016 Ablation of micrometeoroids during atmospheric entry yields volatile gases such as water, carbon dioxide, and sulfur dioxide, capable of altering atmospheric chemistry and hence the climate and habitability of the planetary surface.
Court, RW, Tan, J
core +1 more source
Clasts in the CM2 carbonaceous chondrite Lonewolf Nunataks 94101: evidence for aqueous alteration prior to complex mixing [PDF]
, 2013 Clasts in the CM2 carbonaceous chondrite Lonewolf Nunataks (LON) 94101 have been characterized using scanning and transmission electron microscopy and electron microprobe analysis to determine their degrees of aqueous alteration, and the timing of ...
Bischoff A. +4 more
core +1 more source
Alkali magmatism on a carbonaceous chondrite planetesimal [PDF]
Proceedings of the National Academy of Sciences, 2020 SignificanceIn spite of magnetic and isotopic evidence revealing connections between the most primitive outer Solar System materials and differentiated bodies with a layered structure akin to terrestrial planets, the meteoritic record lacks samples that document the initiation of partial melting and the onset of planetary differentiation.
Aléon, Jérôme +5 more
openaire +2 more sources
Roughness and Angularity of Fragments from Meteorite Disruption Experiments
The Planetary Science Journal, 2023 In this study, we set out to explore the relationship between fracture roughness and sample strength. We analyze 45 fragments of Aba Panu, Allende, and Tamdakht, three meteorites that have been strength-tested to disruption, to determine whether their ...
Gabriel Gowman +5 more
doaj +1 more source
Halite and stable chlorine isotopes in the Zag H3-6 breccia [PDF]
, 2004 Zag is an H3-6 chondrite regolith breccia within which we have studied 14 halite grains ?3mm. The purity of the associated NaCl-H2O brine is implied by freezing characteristics of fluid inclusions in the halite and EPMA analyses together with a lack of ...
Banks, D.A. +3 more
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The Nitrogen Heterocycle Content of Meteorites and Their Significance for the Origin of Life
Life, 2018 Carbonaceous chondrites are very primitive meteorites that are rich in carbon. They contain many soluble organic compounds, including nitrogen heterocycles.
Zita Martins
doaj +1 more source
Organic material in meteorites and the link to the origin of life
BIO Web of Conferences, 2014 Life requires specific conditions that have been, so far, only proven to meet on Earth. Though the chemical elements required to form living organism (C, H, N, O, S, etc) are widespread in the universe, the molecules that are crucial for Life, like ...
Remusat L.
doaj +1 more source
Progress in Earth and Planetary Science, 2022 Enstatite chondrites are a small clan of meteorites, only ~ 1% out of all meteorite collection. However, they are the most reduced meteorites and have almost identical isotopic compositions to those of the Earth, suggestive of significant contributions ...
Yangting Lin
doaj +1 more source
Trace element geochemistry of ordinary chondrite chondrules: the type I/type II chondrule dichotomy [PDF]
, 2015 We report trace element concentrations of silicate phases in chondrules from LL3 ordinary chondrites Bishunpur and Semarkona. Results are similar to previously reported data for carbonaceous chondrites, with rare earth element (REE) concentrations ...
Alard, Olivier +2 more
core +2 more sources