Results 1 to 10 of about 3,558 (195)

Chondrule-like objects and Ca-Al-rich inclusions in Ryugu may potentially be the oldest Solar System materials [PDF]

Nature Communications, 2023
Chondrule-like objects and CAIs in the Ryugu samples are early generations of chondrules and possibly oldest solids in the Solar System. They were transported from the inner solar nebula to the formation location of the Ryugu original parent body.
Daisuke Nakashima, Tomoki Nakamura, Mingming Zhang, Noriko T. Kita, Takashi Mikouchi, Hideto Yoshida, Yuma Enokido, Tomoyo Morita, Mizuha Kikuiri, Kana Amano, Eiichi Kagawa, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Satoru Nakazawa, Fuyuto Terui, Hisayoshi Yurimoto, Takaaki Noguchi, Hikaru Yabuta, Hiroshi Naraoka, Ryuji Okazaki, Kanako Sakamoto, Sei-ichiro Watanabe, Shogo Tachibana, Yuichi Tsuda   +32 more
doaj   +2 more sources

Chondrule formation by collisions of planetesimals containing volatiles triggered by Jupiter’s formation [PDF]

Scientific Reports
Chondrules are spherical or subspherical particles of crystallized or partially crystallized liquid silicates that constitute large-volume fractions of most chondritic meteorites.
Sin-iti Sirono, Diego Turrini
doaj   +2 more sources

Abundant microchondrules in 162173 Ryugu suggest a turbulent origin for primitive asteroids [PDF]

Nature Communications
Chondrules are a characteristic feature of primitive Solar System materials and are common in all primitive meteorites except the CI-chondrites. They are thought to form owing to melting of solid dust aggregates by energetic processing within the solar ...
Matthew J. Genge, Natasha V. Almeida, Matthias van Ginneken, Lewis Pinault, Tobias Salge, Penelope J. Wozniakiewicz, Hajime Yano, Steven J. Desch   +7 more
doaj   +2 more sources

THE Formation of chondrule-like particles in RF discharge plasma

Physical Sciences and Technology, 2023
Chondrules are fundamental components of chondritic meteorites and play a vital role in understanding the formation of the early solar system. This study focuses on the synthesis of chondrule-like particles in a plasma environment using a radiofrequency
Assan Abdirakhmanov, Madina Dauylbayeva, Baglan Kyrykbay, Akdaulet Baikaliyev, Sagi Orazbayev, Almasbek Utegenov, Maratbek Gabdullin, Tlekkabul Ramazanov, Didar Batryshev   +8 more
doaj   +1 more source

Features of olivine crystallization in ordinary chondrites (Saratov meteorite): geochemistry of trace and rare earth elements

Записки Горного института, 2022
The paper discusses the geochemistry of major (EPMA) and trace (SIMS) elements in olivine of porphyritic, nonporphyritic chondrules, and the matrix of equilibrated ordinary chondrite Saratov (L4).
Kristina G. Sukhanova, Anton B. Kuznetsov, Olga L. Galankina   +2 more
doaj   +1 more source

Igneous Rim Accretion on Chondrules in Low-velocity Shock Waves

The Astrophysical Journal, 2023
Shock-wave heating is a leading candidate for the mechanisms of chondrule formation. This mechanism forms chondrules when the shock velocity is in a certain range.
Yuji Matsumoto, Sota Arakawa
doaj   +1 more source

Bubbles to Chondrites-II. Chemical fractionations in chondrites

Progress in Earth and Planetary Science, 2021
We attempt to develop a possible theory of chemical fractionations in chondrites, that is consistent with various features of chondritic components and current observation of protoplanetary disks (PPD).
Akihiko Hashimoto, Yuki Nakano
doaj   +1 more source

Bubbles to Chondrites-I. Evaporation and condensation experiments, and formation of chondrules

Progress in Earth and Planetary Science, 2020
We propose a simple model of chondrule formation that is supported by our new experiments. With a laser-heating and inert-gas-cooling technique, we obtained evaporation and condensation pathways starting with chondritic compositions till ends, and ...
Yuki Nakano, Akihiko Hashimoto
doaj   +1 more source

Implications for Chondrule Formation Regions and Solar Nebula Magnetism from Statistical Reanalysis of Chondrule Paleomagnetism

The Planetary Science Journal, 2023
Converging lines of evidence show that protoplanetary disks are complex environments hosting spatial and temporal variability at multiple scales.
Roger R. Fu, Sarah C. Steele, Jacob B. Simon, Richard Teague, Joan Najita, David Rea   +5 more
doaj   +1 more source

Preface for article collection “Thermal, dynamical, and chemical processes in our early Solar System”

Progress in Earth and Planetary Science, 2022
Upper: Giant impact (Courtesy NASA/JPL-Caltech); chondrule, majorite in shocked enstatite (Courtesy Miyahara); Lower: Collision of planetesimals (Courtesy NASA/JPL-Caltech); Raman mapping of wadsleyite and ringwoodite in Peace River L6 (Courtesy Miyahara
Audrey Bouvier, Makoto Kimura, Yangting Lin, Eiji Ohtani, Thomas Sharp   +4 more
doaj   +1 more source