Results 21 to 30 of about 69,839 (285)
Calcium–aluminum‐rich inclusions in non‐carbonaceous chondrites: Abundances, sizes, and mineralogy
Meteoritics & Planetary Science, 2023 As the Sun was forming, calcium–aluminum‐rich inclusions (CAIs) were the first rocks to have condensed in the hottest regions of the solar nebula disk.
E. Dunham +5 more
semanticscholar +1 more source
Constraints on the ice composition of carbonaceous chondrites from their magnetic mineralogy
Earth and Planetary Science Letters, 2021 Carbonaceous chondrites experienced varying degrees of aqueous alteration on their parent asteroids, which influenced their mineralogies, textures, and bulk chemical and isotopic compositions.
S. Sridhar +3 more
semanticscholar +1 more source
Iron Isotope Constraints on the Structure of the Early Solar System
The Astrophysical Journal Letters, 2023 The recent advent of nontraditional isotopic systems has revealed that meteorites display a fundamental isotopic dichotomy between noncarbonaceous (NC) and carbonaceous (C) groups, which represent material from the inner and outer solar system ...
Yves Marrocchi +2 more
doaj +1 more source
Clays and the Origin of Life: The Experiments
Life, 2022 There are three groups of scientists dominating the search for the origin of life: the organic chemists (the Soup), the molecular biologists (RNA world), and the inorganic chemists (metabolism and transient-state metal ions), all of which have ...
Jacob Teunis (Theo) Kloprogge +1 more
doaj +1 more source
The Astrophysical Journal, 2023 Prebiotic molecules, fundamental building blocks for the origin of life, have been found in carbonaceous chondrites. The exogenous delivery of these organic molecules onto the Hadean Earth could have sparked the polymerization of the first RNA molecules ...
Klaus Paschek +5 more
doaj +1 more source
Life, 2022 The stable isotope composition of soluble and insoluble organic compounds in carbonaceous chondrites can be used to determine the provenance of organic molecules in space.
Heather V. Graham +4 more
doaj +1 more source
Oxygen isotope characteristics of chondrules from the Yamato‐82094 ungrouped carbonaceous chondrite: Further evidence for common O‐isotope environments sampled among carbonaceous chondrites [PDF]
, 2016 T. J. Tenner, Makoto Kimura, N. T. Kita
openalex +2 more sources
Nature Communications, 2022 Researchers at Earth-Life Science Institute (ELSI) discovered a chemical process that can explain the very low amino acid abundances in aqueously altered carbonaceous chondrites, deepening our understanding on the Solar System chemical evolution.
Yamei Li +5 more
doaj +1 more source
Exploring the link between molecular cloud ices and chondritic organic matter in laboratory
Nature Communications, 2021 Several scenarios exist to explain the origins of the organic matter found in carbonaceous chondrites. Here, the authors show laboratory experiments confirming that a significant portion of the soluble organic matter can originate from organic ices ...
G. Danger +8 more
doaj +1 more source
Metal compositions of carbonaceous chondrites [PDF]
Geochimica et Cosmochimica Acta, 2022 FeNi metals represent an important fraction of chondritic components that remains relatively unexplored within most carbonaceous chondrite groups. The compositions of these metals can place constraints on the nature of their precursor materials as well as the physicochemical conditions of chondrule formation.
van Kooten, Elishevah +5 more
openaire +3 more sources