Origin and abundance of water in carbonaceous asteroids
Sign Up to like & getrecommendations! Published in 2018 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2017.10.060
Abstract: Abstract The origin and abundance of water accreted by carbonaceous asteroids remains underconstrained, but would provide important information on the dynamic of the protoplanetary disk. Here we report the in situ oxygen isotopic compositions of… read more here.
Keywords: water; origin abundance; carbonaceous chondrites; isotopic ... See more keywords
Fluid evolution in CM carbonaceous chondrites tracked through the oxygen isotopic compositions of carbonates
Sign Up to like & getrecommendations! Published in 2017 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2017.01.048
Abstract: The oxygen isotopic compositions of calcite grains in four CM carbonaceous chondrites have been determined by NanoSIMS, and results reveal that aqueous solutions evolved in a similar manner between parent body regions with different intensities… read more here.
Keywords: oxygen; evolution; oxygen isotopic; isotopic compositions ... See more keywords
Signatures of the post-hydration heating of highly aqueously altered CM carbonaceous chondrites and implications for interpreting asteroid sample returns
Sign Up to like & getrecommendations! Published in 2020 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2020.08.021
Abstract: The CM carbonaceous chondrites have all been aqueously altered, and some of them were subsequently heated in a parent body environment. Here we have sought to understand the impact of short duration heating on a… read more here.
Keywords: sample; post hydration; carbonaceous chondrites; aqueously altered ... See more keywords
The Loongana (CL) group of carbonaceous chondrites
Sign Up to like & getrecommendations! Published in 2021 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2021.04.007
Abstract: Abstract A coordinated study of the petrology, mineral chemistry, and bulk chemical and isotopic composition of the five ungrouped carbonaceous chondrites Coolidge, Loongana 001, Los Vientos (LoV) 051, Northwest Africa (NWA) 033, and NWA 13400… read more here.
Keywords: group carbonaceous; carbonaceous chondrites; chondrite groups; carbonaceous chondrite ... See more keywords
The Sn isotope composition of chondrites: Implications for volatile element depletion in the Solar System
Sign Up to like & getrecommendations! Published in 2021 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2021.08.011
Abstract: Abstract The origin of volatile element depletion in terrestrial planets and meteorites relative to a solar composition represented by CI carbonaceous chondrites remains an unsolved problem. The isotope compositions of moderately volatile elements may offer… read more here.
Keywords: isotope; ordinary chondrites; carbonaceous chondrites; element ... See more keywords
Spectral reflectance analysis of type 3 carbonaceous chondrites and search for their asteroidal parent bodies
Sign Up to like & getrecommendations! Published in 2021 at "Icarus"
DOI: 10.1016/j.icarus.2020.114034
Abstract: Abstract Non-differentiated asteroids are among the most primitive objects in our Solar System, having escaped intense heating mechanisms. To help us understand the information contained in reflectance spectra measured on asteroids, we analyzed meteorites in… read more here.
Keywords: analysis; reflectance; carbonaceous chondrites; type ... See more keywords
Visible-infrared spectroscopy of ungrouped and rare meteorites brings further constraints on meteorite-asteroid connections
Sign Up to like & getrecommendations! Published in 2021 at "Icarus"
DOI: 10.1016/j.icarus.2021.114393
Abstract: Abstract The composition of asteroids gives crucial insights into the formation and evolution of the Solar System. Although spectral surveys and spacecraft missions provide information on small bodies, many important analyses can only be performed… read more here.
Keywords: ungrouped chondrites; carbonaceous chondrites; visible infrared; parent bodies ... See more keywords
Mid-infrared reflectance spectroscopy of carbonaceous chondrites and Calcium–Aluminum-rich inclusions
Sign Up to like & getrecommendations! Published in 2020 at "Planetary and Space Science"
DOI: 10.1016/j.pss.2020.105078
Abstract: Abstract We obtained mid-infrared reflectance spectra of powdered size fractions (0–25 μm, 25–63 μm, 63–125 μm and 125–250 μm) of 5 carbonaceous chondrites HaH 280 (CK4), Allende (CV3), NWA 10574 (CM2) and Murchison (CM2), and C2 (ungrouped) Tagish Lake.… read more here.
Keywords: infrared reflectance; carbonaceous chondrites; mid infrared; spectroscopy ... See more keywords
Clays and the Origin of Life: The Experiments
Sign Up to like & getrecommendations! Published in 2022 at "Life"
DOI: 10.3390/life12020259
Abstract: 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… read more here.
Keywords: clay; role; clays origin; carbonaceous chondrites ... See more keywords
Possible Ribose Synthesis in Carbonaceous Planetesimals
Sign Up to like & getrecommendations! Published in 2022 at "Life"
DOI: 10.3390/life12030404
Abstract: The origin of life might be sparked by the polymerization of the first RNA molecules in Darwinian ponds during wet-dry cycles. The key life-building block ribose was found in carbonaceous chondrites. Its exogenous delivery onto… read more here.
Keywords: carbonaceous chondrites; possible ribose; synthesis carbonaceous; life ... See more keywords