Results 11 to 20 of about 52,439 (271)

Dating and Tracing the Origin of Enstatite Chondrite Chondrules with Cr Isotopes [PDF]

open access: bronzeAstrophysical Journal, 2020
Chondrules are major components of chondrites and are believed to drive the accretion of planetary embryos. As such, constraining the timing and origin of chondrules is central for understanding the early evolution of the solar system and the formation ...
Ke Zhu   +3 more
openalex   +2 more sources

Reduced and unstratified crust in CV chondrite parent body

open access: yesNature Communications, 2017
Meteorites may unlock the history of the early solar system. Here, the authors find, through Ca-Fe-rich secondary phases, that the distinction between reduced and oxidized CV chondrites is invalid; therefore, CV3 chondrites are asteroid fragments that ...
Clément Ganino, Guy Libourel
doaj   +2 more sources

The Winchcombe meteorite—A regolith breccia from a rubble pile CM chondrite asteroid

open access: yesMeteoritics & Planetary Science, 2022
The Winchcombe meteorite is a CM chondrite breccia composed of eight distinct lithological units plus a cataclastic matrix. The degree of aqueous alteration varies between intensely altered CM2.0 and moderately altered CM2.6.
M. Suttle   +40 more
semanticscholar   +1 more source

Carbon Speciation and Solubility in Silicate Melts

open access: yesGeophysical Monograph Series, Page 179-194., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Natalia Solomatova   +2 more
wiley  

+5 more sources

Earth’s water may have been inherited from material similar to enstatite chondrite meteorites

open access: yesScience, 2020
An unexpected source of Earth's water The abundances of Earth's chemical elements and their isotopic ratios can indicate which materials formed Earth. Enstatite chondrite (EC) meteorites provide a good isotopic match for many elements but are expected to
L. Piani   +5 more
semanticscholar   +1 more source

Thermal history modelling of the L chondrite parent body [PDF]

open access: yesAstronomy & Astrophysics, 2019
Context.The cooling history of individual meteorites can be reconstructed if closure temperatures and closure ages of different radioisotopic chronometers are available for a couple of meteorites.
H. Gail, M. Trieloff
semanticscholar   +1 more source

Classification of CM chondrite breccias—Implications for the evaluation of samples from the OSIRIS‐REx and Hayabusa 2 missions

open access: yesMeteoritics and Planetary Science, 2020
CM chondrites are complex impact (mostly regolith) breccias, in which lithic clasts show various degrees of aqueous alteration. Here, we investigated the degree of alteration of individual clasts within 19 different CM chondrites and CM‐like clasts in ...
S. Lentfort   +3 more
semanticscholar   +1 more source

Abundant extraterrestrial amino acids in the primitive CM carbonaceous chondrite Asuka 12236

open access: yesMeteoritics and Planetary Science, 2020
The Asuka (A)‐12236 meteorite has recently been classified as a CM carbonaceous chondrite of petrologic type 3.0/2.9 and is among the most primitive CM meteorites studied to date.
D. Glavin   +10 more
semanticscholar   +1 more source

The role of Bells in the continuous accretion between the CM and CR chondrite reservoirs

open access: yesMeteoritics and Planetary Science, 2020
CM meteorites are dominant members of carbonaceous chondrites (CCs), which evidently accreted in a region separated from the terrestrial planets. These chondrites are key in determining the accretion regions of solar system materials, since in Mg and Cr ...
Elishevah van Kooten   +3 more
semanticscholar   +1 more source

The Piancaldoli meteorite: A forgotten primitive LL3.10 ordinary chondrite

open access: yesMeteoritics and Planetary Science, 2020
The Piancaldoli ordinary chondrite fell in northern Italy on August 10, 1968. Preliminary studies led to its classification as an LL3.4 unequilibrated ordinary chondrite.
Y. Marrocchi   +9 more
semanticscholar   +1 more source

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