Results 51 to 60 of about 8,403 (204)

Textural and geochemical diversity of impact melt rock clasts in Apollo 16 sample 67015: Implications for the provenance of impact ejecta in the lunar highlands

Meteoritics &Planetary Science, EarlyView.
Abstract Apollo sample 67015 has been classified as a fragmental breccia comprised of highlands‐type clasts and is proposed to be the most complex Apollo 16 sample. 67015 is dominated by impact melt rock clasts that display a variety of textures, which have been previously interpreted to be indicative of multiple impact events.
Tara S. Hayden, Gordon R. Osinski
wiley   +1 more source

Micromagnetic and microstructural analyses in chondrules of the Allende meteorite

Revista Mexicana de Ciencias Geológicas, 2018
Results of micromagnetic and microstructural studies of individual chondrules from the Allende carbonaceous meteorite are presented. Allende is a member of the CV3 carbonaceous chondrites, and part of the oxidized meteorites with iron in silicates and ...
Daniel Flores-Gutiérrez, Jaime Urrutia-Fucugauchi, Ligia Pérez-Cruz, Carlos Linares-López   +3 more
doaj  

Iron Isotope Constraints on the Structure of the Early Solar System

The Astrophysical Journal Letters, 2023
The recent advent of nontraditional isotopic systems has revealed that meteorites display a fundamental isotopic dichotomy between noncarbonaceous (NC) and carbonaceous (C) groups, which represent material from the inner and outer solar system ...
Yves Marrocchi, Maxime Piralla, François L. H. Tissot   +2 more
doaj   +1 more source

Nondestructive analysis of Bennu samples toward comparative studies with Ryugu samples

Meteoritics &Planetary Science, EarlyView.
Abstract Analyzing primitive extraterrestrial samples from asteroids is key to understanding the evolution of the early solar system. The OSIRIS‐REx mission returned samples from the B‐type asteroid Bennu, providing a valuable opportunity to compare them with the Ryugu samples collected by the Hayabusa2 mission.
Ryota Fukai, Masahiro Nishimura, Koki Yumoto, Yuichiro Cho, Yuta Shimizu, Moe Matsuoka, Eri Tatsumi, Soichiro Furukawa, Ryosuke Sakurai, Toru Yada, Kentaro Hatakeda, Kasumi Yogata, Yuma Enokido, Rui Tahara, Akiko Miyazaki, Seiya Kawasaki, Rei Kanemaru, Seiji Sugita, Shoki Mori, Shumpei Nakahara, Yuta Aikyo, Hideaki Miyamoto, Cedric Pilorget, Damien Loizeau, Laura Nardelli, Rachel Sheppard, Cateline Lantz, Lucie Riu, Jean‐Pierre Bibring, Rosario Brunetto, Tatsuaki Okada, Masanao Abe, Tomohiro Usui   +32 more
wiley   +1 more source

Description and modeling of the Jiddat al Harasis 091 L5 strewn field

Meteoritics &Planetary Science, EarlyView.
Abstract With a size of 51.2 × 7.2 km, the 10.9 ± 1.7 ka old Jiddat al Harasis 091 L5 chondrite strewn field is the largest known in Oman. It consists of more than 700 meteorites with a total mass of >4.5 tons from which the largest six stones of >100 kg to 1.5 tons make up two thirds of the total mass.
Karl Wimmer, Edwin Gnos, Beda Hofmann, Sandro Boschetti, Jan Walbrecker, Hansruedi Maurer   +5 more
wiley   +1 more source

Modeling enstatite chondrites: Reduced rocks with a pinch of oxidized material (affected by varying H2O(g)) derived from planetesimals shocked during the epoch of giant–planet migration

Meteoritics &Planetary Science, EarlyView.
Abstract The O‐, N‐, Mo‐, Ru‐, Os‐, Cr‐, Ti‐, Ni‐, Fe‐, Nd‐, Ca‐, Zn‐, Sr‐, and Mg‐isotopic compositions of enstatite chondrites are essentially identical to those of the Earth and Moon. These correspondences suggest enstatite chondrites formed at ≈1 AU as the only known chondrite groups that accreted in the vicinity of a major planet. Bulk Earth has a
Alan E. Rubin
wiley   +1 more source

YARATKULOVO – A NEW H-CHONDRITE IN THE URALS: MINERALOGICAL DATA [PDF]

Минералогия, 2017
The Yaratkulovo meteorite was found in 2016 in the Argayash district of the Chelyabinsk region. It is a «chondrite breccia», in which the light coarse-grained fragments (primary chondrite) occur in the dark fine-grained matrix (impact assemblages ...
V.V. Sharygin, S.V. Kolisnichenko
doaj  

Various Size-sorting Processes for Millimeter-sized Particles in the Sun’s Protoplanetary Disk? Evidence from Chondrules in Ordinary Chondrites

Astrophysical Journal, 2019
Chondrules are approximately millimeter-sized beads of crystallized silicate melt. They formed mainly in the first ∼3 Ma of the Sun’s protoplanetary disk and are the main constituents of chondritic asteroids.
K. Metzler, D. Hezel, J. Nellesen
semanticscholar   +1 more source

Chondrule heritage and thermal histories from trace element and oxygen isotope analyses of chondrules and amoeboid olivine aggregates [PDF]

, 2017
We report combined oxygen isotope and mineral‐scale trace element analyses of amoeboid olivine aggregates (AOA) and chondrules in ungrouped carbonaceous chondrite, Northwest Africa 5958.
E. Jacquet, Y. Marrocchi
semanticscholar   +1 more source

Raman Study of the Slobodka Ordinary Chondrite

Journal of Raman Spectroscopy, Volume 56, Issue 11, Page 1329-1344, November 2025.
The texture and mineral chemistry of Slobodka are most consistent with L4 chondrites, exhibiting strong shock metamorphism characteristic of shock stage S4, including irregular and planar fractures, undulatory extinction, and mosaicism in olivine, pyroxene, and plagioclase.
M. Simopoulou, I. Baziotis, L. Ferrière, J. Hu, C. Sanchez‐Valle, P. N. Gamaletsos, D. Palles, J. Berndt, C. Ma, S. Klemme, P. D. Asimow   +10 more
wiley   +1 more source