Results 101 to 110 of about 67,364 (304)
VIS‐to‐MIR reflectance and Raman spectroscopy of the CM2 NWA 12184 carbonaceous chondrite
Abstract The spectral analysis of CM meteorites can help to constrain the mineralogical composition of their parent body, the C‐type asteroids. The CM2 NWA 12184 was spectrally examined employing seven complementary techniques at different spatial resolutions, including VIS‐to‐MIR reflectance and Raman spectroscopy.
A. Galiano+15 more
wiley +1 more source
Abstract Results of microanalysis study of NWA 869 meteorite, an ordinary chondrite, where silicates, Fe‐Ni alloys, and troilite are major constituents, are reported. The presented study of microtextures in metallic and sulfide grains provides information on processes occurring from the asteroid's accretion, through the impacts until cooling.
Paulina Skirak+4 more
wiley +1 more source
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
Abstract Samples of impactite from the small (~350 m diameter) Monturaqui crater in northern Chile contain Fe‐Ni metallic spherules sourced from the iron meteorite impactor. Textural characterization and quantification were done using SEM and μCT data. Two textural types are distinguished, with different size distributions.
Daniel O. Cukierski+5 more
wiley +1 more source
Material composition of the Severnyy Kolchim meteorite
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
The Probability of Large Meteorites Having Fallen upon the Earth [PDF]
E. H. L. Schwarz
openalex +1 more source
A feasibility assessment of micromill sampling for Rb‐Sr and Sm‐Nd geochronology of shergottites
Abstract Accurate dating of Martian meteorites is crucial for understanding key events in the planet's evolution. However, not all Martian meteorites are amenable to dating techniques currently in use for these rocks. The priority of sample preservation precludes mineral separation methods for low‐volume specimens, whereas the less destructive in situ ...
A. I. Sheen, C. D. K. Herd, K. T. Tait
wiley +1 more source
Tunguusi fenomeni kajastus evenkide rahvapärimuses ja teaduslikes hüpoteesides [PDF]
On 30 June 1908, a so far unexplained peculiar natural disaster occurred in central Siberia, in the vicinity of the River Podkamennaya Tunguska, the right tributary of Yenisei.
Natalia Dmitrieva, Vitali Romeiko
doaj