Results 111 to 120 of about 104,611 (276)
Impact fracturing and aqueous alteration of the CM carbonaceous chondrites [PDF]
, 2014 Aqueous alteration of the CM carbonaceous chondrites has produced a suite of secondary minerals, and differences between meteorites in their abundance defines a progressive alteration sequence [e.g. 1, 2]. The means by which this water gained access
Lee, M.R., Lindgren, P., Simpson, S.S.L.
core
, 2019 Metallic microstructures in slowly-cooled iron-rich meteorites reflect the thermal and magnetic histories of their parent planetesimals. Of particular interest is the cloudy zone, a nanoscale intergrowth of Ni-rich islands within a Ni-poor matrix that ...
Bryson, James F. J. +2 more
core +2 more sources
Sulfur‐bearing serpentine in carbonaceous chondrites
Meteoritics &Planetary Science, EarlyView.Abstract A correlative multi‐technique approach, including electron microscopy and X‐ray synchrotron work, has been used to obtain both structural and compositional information of a sulfur‐bearing serpentine identified in several carbonaceous chondrites (Winchcombe CM2, Aguas Zarcas CM2, Ivuna CI, and Orgueil CI), and in Ryugu samples returned by the ...
N. Topping +14 more
wiley +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract The majority of planetary impacts occur at oblique angles. Impact structures on Earth are commonly eroded or buried, rendering the identification of the direction and angle of impact—using methods such as asymmetries in ejecta distribution, surface topographic expression, central uplift structure, and geophysical anomalies—challenging. In this
Eloise E. Matthews +5 more
wiley +1 more source
Геодинамика и тектонофизика, 2019 A superbolide with an estimated mass of 13,000 tonnes exploded at an altitude of 22 km over the city of Chelyabinsk (Russia) at 03 hours 20 min. 33 sec. UTC on February 15, 2013. It is now known as the Chelyabinsk meteorite. Over the past 100 years after
R. A. Rakhmatulin
doaj +1 more source
Seismic reflection and topography insights into Ries crater diameter and megablock zone
Meteoritics &Planetary Science, EarlyView.Abstract Most of the extensive crater‐wide geophysical studies at the Ries impact structure were made decades ago when the origin of the structure was still being debated. Although it is one of the most studied impact structures, its internal structure was not imaged in high resolution until recently.
Kaidi Karro +5 more
wiley +1 more source
Dual isotopic composition of methane in Murchison meteorite [PDF]
, 2001 Dual isotopic composition (H and C) of methane extracted from a small sample of Murchison meteorite reveals a deuterium enrichment for this molecule, indicating the presence of interstellar ...
Butterworth, A. L. +2 more
core
Spinel assemblages in lunar meteorites Graves Nunataks 06157 and Dhofar 1528: Implications for impact melting and equilibration in the Moon's upper mantle [PDF]
, 2018 A. Wittmann +3 more
openalex +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract A bright fireball was seen at 4:46 a.m. CET on November 19, 2020, over Austria, and also eye witnessed in Italy and Germany. The resulting Kindberg meteorite was the fifth well‐approved meteorite fall in Austria, and all rocks represent ordinary chondrites.
Addi Bischoff +8 more
wiley +1 more source
Material composition of the Severnyy Kolchim meteorite
Vestnik Permskogo Universiteta: Seriâ Geologiâ, 2019 New data on the material composition of the Severny Kolchim meteorite, found in the Perm region territory in 1965, is presented. It is established that the cosmic substance is composed of forsterite, enstatite, diopside, plagioclase (oligoclase ...
Yu. V. Erokhin +4 more
doaj +1 more source