Results 51 to 60 of about 6,413 (223)

Two faces of L-type asteroids

Astronomy & Astrophysics
Context. L-types are a rare class of asteroids whose spectra indicate similarities with CO and CV chondrites, suggesting high abundances of refractory inclusions, particularly with respect to the calcium-aluminium-rich inclusion.
Mahlke M., Marsset M., Devogèle M., Baklouti D., Beck P., Bonal L., Brunetto R., Lantz C., Tanga P.   +8 more
doaj   +1 more source

Mineralogy and Surface Composition of Asteroids

, 2015
Methods to constrain the surface mineralogy of asteroids have seen considerable development during the last decade with advancement in laboratory spectral calibrations and validation of our interpretive methodologies by spacecraft rendezvous missions ...
Burbine, Thomas H., Dunn, Tasha L., Moskovitz, Nicholas A., Reddy, Vishnu, Thomas, Cristina A.   +4 more
core   +1 more source

The effect of early diagenetic processes on the quantification of fossil micrometeorite abundance and flux in the geological record

Meteoritics &Planetary Science, EarlyView.
Abstract Fossil micrometeorites (MMs) recovered from lithified sedimentary rocks, particularly iron‐rich (I‐type) cosmic spherules (CSs) provide valuable insights into past dust‐forming events. Their abundances, when combined with estimates of local sedimentation rates can be used to reconstruct the flux of extraterrestrial dust.
Isabelle S. Mattia, Matthew J. Genge, Martin D. Suttle   +2 more
wiley   +1 more source

Thermal history modeling of the H chondrite parent body [PDF]

, 2012
The cooling histories of individual meteorites can be empirically reconstructed by using ages from different radioisotopic chronometers with distinct closure temperatures.
Akridge, Arzt, Bennett, Benoit, Birck, Bouvier, Charbonneau, Cherniak, Consolmagno, Dauphas, Dodd, Dodson, D’Antonia, Fei, Fischmeister, Gaffey, Ganguly, Göpel, Güttler, H.-P. Gail, Haisch, Harrison, Henke, Herpfer, Hevey, Hopfe, James, Kakar, Kita, Kleine, Kleine, Kleine, Krause, Krause, Larsson, M. Trieloff, McSween, Minster, Miyamoto, Morbidelli, Nyquist, Pellas, Quitté, Rao, Richardson, Rudraswami, Rudraswami, Rugel, Ryan, S. Henke, Sahijpal, Slater-Reynolds, Storåkers, T. Kleine, Tang, Taylor, Torppa, Trieloff, W. H. Schwarz, Warren, Wittmann, Yomogida, Yomogida   +62 more
core   +1 more source

Drelów, the 13th and latest meteorite fall in Poland—A typical L6 chondrite with shock veins

Meteoritics &Planetary Science, EarlyView.
Abstract On Tuesday, February 18, 2025, at 18:04:14 local time, residents of Poland observed a bright fireball registered by many Polish fireball stations belonging to the Skytinel Network established a few months before by Mateusz Żmija. Thus, the meteoroid's orbit, atmospheric trajectory, and the strewn field were calculated, and over 70 fragments ...
Addi Bischoff, Krzysztof Szopa, Jean‐Alix Barrat, Stig Bartel, Jasper Berndt, Tommaso Di Rocco, Dieter Heinlein, Stephan Klemme, Tomasz Krzykawski, Björn Lehnert, Agnieszka Mirek, Andreas Pack, Markus Patzek, Marie Pichotta, Maximilian P. Reitze, Stefan Ruchti, Philippe Schmitt‐Kopplin, Karl Wimmer, Mateusz Żmija   +18 more
wiley   +1 more source

Thermoluminescence studies of ordinary chondrites in the Japanese Antarctic meteorite collection, III: Asuka and Yamato type 3 [PDF]

, 2002
We measured thermoluminescence (TL) properties of 37 Asuka and 13 Yamato type 3 ordinary chondrites from Japanese Antarctic meteorite collection for determining subtypes and pairing.
Hideyasu Kojima, Kiyotaka Ninagawa, Masanori Ota, Naoya Imae   +3 more
core   +1 more source

60Fe-60Ni chronology of core formation in Mars

, 2014
The timescales of accretion, core formation, and magmatic differentiation in planetary bodies can be constrained using extinct radionuclide systems. Experiments have shown that Ni becomes more siderophile with decreasing pressure, which is reflected in ...
Dauphas, Nicolas, Tang, Haolan
core   +1 more source

High pressure minerals in the Château-Renard (L6) ordinary chondrite: implications for collisions on its parent body [PDF]

, 2018
We report the first discoveries of high-pressure minerals in the historical L6 chondrite fall Château-Renard, based on co-located Raman spectroscopy, scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy and electron backscatter ...
Anand, Mahesh, Asimow, Paul D., Baziotis, Ioannis, Cernok, Ana, Ferrière, Ludovic, Hu, Jinping, Ma, Chi, Topa, Dan   +7 more
core   +2 more sources

Microchondrules in three unequilibrated ordinary chondrites [PDF]

Meteoritics & Planetary Science, 2016
AbstractWe report on a suite of microchondrules from three unequilibrated ordinary chondrites (UOCs). Microchondrules, a subset of chondrules that are ubiquitous components of UOCs, commonly occur in fine‐grained chondrule rims, although may also occur within matrix.
John N. Bigolski, Michael K. Weisberg, Harold C. Connolly, Denton S. Ebel   +3 more
openaire   +1 more source

Combining universal‐stage, backscatter electron imaging and electron backscatter diffraction for improved indexing of planar microstructures in quartz and plagioclase

Meteoritics &Planetary Science, EarlyView.
Abstract Quartz and feldspar commonly develop planar microstructures due to shock metamorphism. These are generally investigated and indexed (identifying the crystallographic orientation along which they developed) using a universal stage (U‐stage) on a petrographic microscope.
Lidia Pittarello, Thomas Griffiths, Gerlinde Habler   +2 more
wiley   +1 more source