Results 31 to 40 of about 8,403 (204)
How to form planetesimals from mm-sized chondrules and chondrule aggregates [PDF]
, 2015 The size distribution of asteroids and Kuiper belt objects in the solar system is difficult to reconcile with a bottom-up formation scenario due to the observed scarcity of objects smaller than $\sim$100 km in size.
D. Carrera, A. Johansen, M. Davies
semanticscholar +1 more source
Chromium Isotopic Evidence for an Early Formation of Chondrules from the Ornans CO Chondrite
Astrophysical Journal, 2019 Chondrules are the main components of primitive meteorites and possibly the building blocks of planetary embryos and terrestrial planets. However, their ages and modes of formation are still highly debated. Here, we present high-precision Cr isotope data
K. Zhu 朱 +5 more
semanticscholar +1 more source
Thermal History of CBb Chondrules and Cooling Rate Distributions of Ejecta Plumes [PDF]
Astrophysical Journal Letters, 2018 It has been proposed that some meteorites, CB and CH chondrites, contain material formed as a result of a protoplanetary collision during accretion.
R. Hewins +7 more
semanticscholar +1 more source
Parauapebas meteorite from Pará, Brazil, a “hammer” breccia chondrite
Brazilian Journal of Geology, 2020 The Parauapebas meteorite, third official meteorite discovered in the Brazilian Amazon region, is a “hammer meteorite” which fell on December 9th, 2013, in the city of Parauapebas, Pará State, Brazil.
Daniel Atencio +5 more
doaj +1 more source
Modeling Chondrule Dust Rim Growth with Ellipsoidal Monomers
The Astrophysical Journal, 2023 Fine-grained dust rims (FGRs) surrounding chondrules in carbonaceous chondrites encode important information about early processes in the solar nebula.
C. Xiang +3 more
doaj +1 more source
Can Chondrules Be Produced by the Interaction of Jupiter with the Protosolar Disk? [PDF]
Astrophysical Journal, 2019 Chondrules are crystallized droplets of silicate melt formed by rapid heating to high temperatures (>1800 K) of solid precursors followed by hours or days of cooling.
J. Bodénan +4 more
semanticscholar +1 more source
Structure of the chondrules and the chemical composition of olivine in meteorite Jesenice
Geologija, 2013 This paper presents a mineralogical analysis of various chondrule types and chemical analysis of olivine indifferent parts of meteorite Jesenice. Quantitative energy-dispersive X-ray spectroscopy with a scanning electronmicroscope was used in the ...
Bojan Ambrožič +3 more
doaj +1 more source
The Origin and Physico-Chemical Properties of Some Unusual Earth Rock Fragments
Applied Sciences, 2022 In this paper, several researches were undertaken related to a violent phenomenon, characterized by a sonic boom, felt on an area of at least 500 km2, shortly followed by the fall of rock fragments that were then recovered from the ground.
Alexandru Cocean +7 more
doaj +1 more source
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 +8 more
doaj +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract We report new results from a study of shock‐related features in the L6 ordinary chondrites Northwest Africa (NWA) 4672 and NWA 12841. Our observations confirm the occurrence of eight high‐pressure (HP) minerals in each meteorite, namely, ringwoodite, majorite, akimotoite, wadsleyite, albitic jadeite, lingunite, tuite, and xieite.
I. Baziotis +5 more
wiley +1 more source