Results 81 to 90 of about 52,439 (271)

The Fountain Hills meteorite: A new CBa chondrite from Arizona [PDF]

, 2004
We describe a new member of the CR chondrite clan and compare it to other members of this ...
Franchi, I.A., Greenwood, R.G, Killgore, M., Lauretta, D.S., Verchovsky, A.V.   +4 more
core  

Moderately volatile elements in CB and CH chondrites [PDF]

, 2023
Jérôme Roland, Vinciane Debaille, Steven Goderis   +2 more
openalex   +1 more source

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source

Petrography and mineral chemistry of Escalón meteorite, an H4 chondrite, México

Revista Mexicana de Ciencias Geológicas, 2018
The Escalón meteorite, a crusted mass weighing 54.3 g, was recovered near Zona del Silencio in Escalón, state of Chihuahua, México. The stone is an ordinary chondrite belonging to the high iron group H, type 4.
Adela M. Reyes-Salas, Gerardo Sánchez-Rubio, Patricia Altuzar-Coello, Fernando Ortega-Gutiérrez, Daniel Flores-Gutiérrez, Karina Cervantes-de la Cruz, Eugenio Reyes, Carlos Linares   +7 more
doaj  

Refined Ordovician timescale reveals no link between asteroid breakup and biodiversification

Nature Communications, 2017
The high amount of L-type chondrites discovered in Ordovician sediments has previously been linked with the Great Ordovician Biodiversification Event. But here, Lindskoget al.
A. Lindskog, M. M. Costa, C.M.Ø. Rasmussen, J. N. Connelly, M. E. Eriksson   +4 more
doaj   +1 more source

Low delta-V near-Earth asteroids: A survey of suitable targets for space missions

, 2014
In the last decades Near-Earth Objects (NEOs) have become very important targets to study, since they can give us clues to the formation, evolution and composition of the Solar System.
Barucci, M. A., Bernardi, F., Brucato, J. R., De Luise, F., Dotto, E., Fornasier, S., Ieva, S., Perna, D., Perozzi, E., Rossi, A.   +9 more
core   +2 more sources

The fall of the Haag (LL4‐6) chondrite breccia—Just 8 years after the nearby fall Stubenberg (LL6)

Meteoritics &Planetary Science, EarlyView.
Abstract On October 24, 2024, an impressive fireball was visible over Austria. After the possible strewn field was calculated, the first sample of the Haag meteorite, with a mass of 8.76 g, was discovered on November 2, 2024, 8 days after the fireball event. Four more samples were found afterward putting the total sample mass at about 151 g.
Addi Bischoff, Markus Patzek, Jean‐Alix Barrat, Stig Bartel, Jasper Berndt, Henner Busemann, Tommaso Di Rocco, Mattias Ek, Manuela A. Fehr, Dieter Heinlein, Daniela Krietsch, Björn Lehnert, Colin Maden, Oscar Marchhart, Martin Martschini, Silke Merchel, Andreas Pack, Andrea Patzer, Marie Pichotta, Maximilian P. Reitze, Philippe Schmitt‐Kopplin, Maria Schönbächler, Leon Thannheiser, Iris Weber, Alexander Wieser, Karl Wimmer   +25 more
wiley   +1 more source

Unique evidence of fluid alteration in the Kakowa (L6) ordinary chondrite

Scientific Reports, 2022
Meteorites preserve evidence of processes on their parent bodies, including alteration, metamorphism, and shock events. Here we show that the Kakowa (L6) ordinary chondrite (OC) preserves both shock-melt veins and pockets of detrital grains from a ...
I. P. Baziotis, C. Ma, Y. Guan, L. Ferrière, S. Xydous, J. Hu, M. A. Kipp, F. L. H. Tissot, P. D. Asimow   +8 more
doaj   +1 more source

Sulfide–Metal Assemblages on CR2 Chondrule Rims: Products of Nebular Fission–Sulfidization and Parent Body Oxidation–Serpentinization

Meteoritics &Planetary Science, EarlyView.
Abstract We conducted a scanning electron microscopy (SEM) and transmission electron microscopy (TEM) study of sulfide–metal assemblages (SMAs) in minimally to moderately altered CR2 chondrites. The assemblages occur on chondrule rims and consist of kamacite cores rimmed by pyrrhotite.
S. A. Singerling, A. J. Brearley
wiley   +1 more source

Experimental constraints on the origin of metal and carbon in ureilite meteorites

Meteoritics &Planetary Science, EarlyView.
Abstract Ureilites are carbon‐rich ultramafic achondrites that display unique textures, including strips of metal and carbon phases situated along grain boundaries and in fractures. Shock metamorphism observed in ureilites suggests an episode of brittle deformation caused by impact disruption of their parent body.
Nicolas P. Walte, Max Collinet, Cyrena A. Goodrich   +2 more
wiley   +1 more source