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Origin of Halogens and Nitrogen in Enstatite Chondrites [PDF]
Earth, Moon and Planets, 2009 The EH and EL enstatite chondrites are the most reduced chondrite groups, having formed in nebular regions where the gas may have had high C/O and/or pH2/pH2O ratios. Enstatite chondrites (particularly EH) have higher CI- and Mg-normalized abundances of halogens (especially F and Cl) and nitrogen than ordinary chondrites and most groups of carbonaceous
Alan E. Rubin, Byeon-Gak Choi
exaly +6 more sources
Earth’s Water May Have Been Inherited From Material Similar to Enstatite Chondrite Meteorites
Science, 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
Yves Marrocchi +2 more
exaly +3 more sources
The message of oldhamites from enstatite chondrites [PDF]
Progress in Earth and Planetary Science, 2022 We have determined rare-earth element (REE) abundances in oldhamites (CaS) from 13 unequilibrated and equilibrated enstatite chondrites (5 EH and 8 EL) and in a few enstatites by in situ, laser ablation ICP-MS.
Tahar Hammouda +3 more
doaj +3 more sources
A Pyroxenite Mantle on Mercury? Experimental Insights From Enstatite Chondrite Melting at Pressures Up to 5 GPa [PDF]
IcarusEnstatite chondrites (EC) are potential source material for the accretion of Mercury due to their reduced nature and enrichment in volatile elements. Understanding their melting properties is therefore important to better assess a scenario where Mercury ...
Sarah Lambart +2 more
exaly +2 more sources
Earth and Planetary Science Letters22 23 The nature and origin of the Earth's building blocks remain intensely debated. While 24 enstatite chondrites (ECs) were formed from a reservoir with an isotopic composition of 25 major elements similar to that of the Earth, they nevertheless ...
Yves Marrocchi +2 more
exaly +2 more sources
The integral enstatite chondrite model of the earth
Geophysical Research Letters, 1995 The only primitive meteorites that match satisfactorily both the stable isotope and redox characteristics of the Earth are the Enstatite chondrites. I present an integral Enstatite chondrite model in which the Earth is built from essentially pure EH material, which is justified by the above similarities and by the fact that most elements in these ...
M. Javoy
semanticscholar +2 more sources
An Almahata Sitta EL3 fragment: implications for the complex thermal history of enstatite chondrites
Progress in Earth and Planetary Science, 2021 Almahata Sitta is a polymict breccia, consisting of many kinds of clasts. Here we present our mineralogical and petrological results on an EL3 fragment, MS-177 from Almahata Sitta.
M. Kimura +4 more
doaj +1 more source
Heliyon, 2022 Volcanic scoriae from the southern part of the Cameroon Volcanic Line (Limbé, Loum-Tombel, Yamba, Doupé, Njinkouo, Foumbot, Manjo-manengollé, Galim and Djoungo) were investigated in order to determine their chemical and mineralogical composition, to ...
Estelle Huguette Ngono Onana +2 more
doaj +1 more source
, 2021 Chondrites are the likely building blocks of Earth, and identifying the group of chondrite that best represents Earth is a key to resolving the state of the early Earth.
Y. Miyazaki, J. Korenaga
semanticscholar +1 more source
I–Xe ages of enstatite chondrites [PDF]
Geochimica et Cosmochimica Acta, 2016 Abstract In order to elucidate the early thermal history of enstatite chondrite parent bodies we determined 129I–129Xe whole rock ages of enstatite chondrites (5 EH, 2 EL, one EH impact melt) relative to the Shallowater reference meteorite (4562.3 ± 0.4 Ma, all errors are 1σ).
Hopp, J., Trieloff, M., Ott, U.
openaire +2 more sources