Results 21 to 30 of about 424,190 (218)

Neon produced by solar cosmic rays in ordinary chondrites [PDF]

open access: yes, 2017
Solar-cosmic-ray-produced Ne (SCR-Ne), in the form of low cosmogenic ²¹Ne/²²Ne ratios (²¹Ne/²²Necos
Knut Metzler   +9 more
core   +2 more sources

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

open access: yesScientific 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   +8 more
doaj   +1 more source

Aqueous alteration without initial water: possibility of organic-induced hydration of anhydrous silicates in meteorite parent bodies

open access: yesEarth, Planets and Space, 2021
Early evolution of Solar System small bodies proceeded through interactions of mineral and water. Melting of water ice accreted with mineral particles to the parent body results in the formation of secondary minerals, the so-called aqueous alteration ...
Naoki Hirakawa   +5 more
doaj   +1 more source

Magnetic classification of stony meteorites: 2. Non-ordinary chondrites [PDF]

open access: yes, 2008
A database of magnetic susceptibility (χ) measurements on different non-ordinary chondrites (C, E, R, and ungrouped) populations is presented and compared to our previous similar work on ordinary chondrites. It provides an exhaustive study of the amount
Bonal, L.   +13 more
core   +3 more sources

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

open access: yesЗаписки 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   +2 more
doaj   +1 more source

Metamorphism of CO and CO-like chondrites and comparisons with type 3 ordinary chondrites [PDF]

open access: yes, 1991
P(論文)In order to explore their metamorphic history, thermoluminescence data have been obtained for 10 CO or CO-related chondrites from the Antarctic. Six have TL properties indicating low to intermediate levels of metamorphism, while Lewis Cliff 85332 ...
Sears,Derek W. G.   +3 more
core   +1 more source

Extended chronologies of aqueous alteration in the CM2 carbonaceous chondrites: evidence from carbonates in Queen Alexandra Range 93005 [PDF]

open access: yes, 2012
The Antarctic CM2 carbonaceous chondrite QUE 93005 contains four compositionally distinct carbonates, namely breunnerite, calcite, dolomite and a Ca-poor dolomite. These carbonates can form monomineralic grains, or may be intergrown as bimineralic grains
Alexander, C.   +4 more
core   +1 more source

THE EXISTENCE OF GROUPS OF METEORITE-PRODUCING FIRE-BALLS AND METEORITES IN COMET-LIKE ORBITS

open access: yesOdessa Astronomical Publications, 2018
This paper discusses the existence of groups of meteorite-producing fireballs and ordinary chondrites in the Earth-crossing Jupiter-family comet-like (JFC) orbits.
N. A. Konovalova   +2 more
doaj   +1 more source

Native Platinum in the Ordinary Chondrite

open access: yesВестник Пермского университета. Геология, 2020
The article presents the first results of the study of native platinum extracted from chondrite. The native platinum forms microinclusions in carbonaceous matter andchromites, which are found in ordinary chondrite. Native platinum forms micrograins and aggregates of cubic microcrystals, most of which are free from impurities.
N. Y. Nikulova   +3 more
openaire   +3 more sources

The dynamic strength of an ordinary chondrite [PDF]

open access: yesMeteoritics & Planetary Science, 2011
Abstract– Dynamic and quasistatic unconfined compression experiments were performed on samples of the L5 ordinary chondrite MacAlpine Hills (MAC) 88118. The dynamic compressive strength measurements are the first of its kind for a stony meteorite, and indicate that the material tested here exhibits significant increase in compressive strength with ...
Jamie KIMBERLEY, K. T. RAMESH
openaire   +1 more source

Home - About - Disclaimer - Privacy