Silicic volcanism on Mars evidenced by tridymite in high-SiO2 sedimentary rock at Gale crater
RV Morris, DT Vaniman, DF Blake… - Proceedings of the …, 2016 - National Acad Sciences
Tridymite, a low-pressure, high-temperature (> 870° C) SiO2 polymorph, was detected in a
drill sample of laminated mudstone (Buckskin) at Marias Pass in Gale crater, Mars, by the …
drill sample of laminated mudstone (Buckskin) at Marias Pass in Gale crater, Mars, by the …
Chondrule properties and formation conditions
Chondrules are iconic sub-millimeter spheroids representing the most abundant high-
temperature dust formed during the evolution of the circumsolar disk. Chondrules have been …
temperature dust formed during the evolution of the circumsolar disk. Chondrules have been …
Formation of CV chondrules by recycling of amoeboid olivine aggregate-like precursors
Y Marrocchi, R Euverte, J Villeneuve… - … et Cosmochimica Acta, 2019 - Elsevier
We have studied porphyritic olivine-rich chondrules of the carbonaceous chondrite Kaba
(CV3) by combined high-resolution X-ray mapping, quantitative electron microprobe …
(CV3) by combined high-resolution X-ray mapping, quantitative electron microprobe …
What we know about elemental bulk chondrule and matrix compositions: Presenting the ChondriteDB Database
DC Hezel, M Harak, G Libourel - Geochemistry, 2018 - Elsevier
Chondrules and matrix are the major components of chondritic meteorites and represent a
significant evolutionary step in planet formation. The formation and evolution of chondrules …
significant evolutionary step in planet formation. The formation and evolution of chondrules …
Modal abundances of CAIs: Implications for bulk chondrite element abundances and fractionations
Modal abundances of Ca, Al‐rich inclusions (CAIs) are poorly known and reported data
scatter across large ranges. CAIs are Poisson distributed, and if only small areas (< 1000 …
scatter across large ranges. CAIs are Poisson distributed, and if only small areas (< 1000 …
The chemical relationship between chondrules and matrix and the chondrule matrix complementarity
DC Hezel, H Palme - Earth and Planetary Science Letters, 2010 - Elsevier
Chondrules and matrix are the two major components of carbonaceous chondrites (CC).
The Mg/Si ratios of chondrules and matrices in CV, CR, CO and CM chondrites are …
The Mg/Si ratios of chondrules and matrices in CV, CR, CO and CM chondrites are …
Oxygen isotopic diversity of chondrule precursors and the nebular origin of chondrules
FeO-poor (type I) porphyritic chondrules formed by incomplete melting of solid dust
precursors via a yet-elusive mechanism. Two settings are generally considered for their …
precursors via a yet-elusive mechanism. Two settings are generally considered for their …
The origin of chondrules: Constraints from matrix composition and matrix-chondrule complementarity
One of the major unresolved problems in cosmochemistry is the origin of chondrules, once
molten, spherical silicate droplets with diameters of 0.2 to 2 mm. Chondrules are an …
molten, spherical silicate droplets with diameters of 0.2 to 2 mm. Chondrules are an …
Amorphous silicates in the matrix of Semarkona: The first evidence for the localized preservation of pristine matrix materials in the most unequilibrated ordinary …
E Dobrică, AJ Brearley - Meteoritics & Planetary Science, 2020 - Wiley Online Library
We have investigated the fine‐grained matrix of the least‐altered unequilibrated ordinary
chondrite (UOC) Semarkona (LL3. 00) using different electron microscope techniques …
chondrite (UOC) Semarkona (LL3. 00) using different electron microscope techniques …
The conditions of chondrule formation, Part II: Open system
P Friend, DC Hezel, D Mucerschi - Geochimica et Cosmochimica Acta, 2016 - Elsevier
We studied the texture of 256 chondrules in thin sections of 16 different carbonaceous (CV,
CR, CO, CM, CH) and Rumuruti chondrites. In a conservative count∼ 75% of all chondrules …
CR, CO, CM, CH) and Rumuruti chondrites. In a conservative count∼ 75% of all chondrules …