Results 61 to 70 of about 64,884 (241)

Shock-transformation of whitlockite to merrillite and the implications for meteoritic phosphate

Nature Communications, 2017
Quantifying the amount of water in meteorites remains challenging, with minerals the key to understanding water contents. Here, Adcocket al. perform shock experiments on H+-bearing whitlockite demonstrating that it may transform into anhydrous merrillite,
C. T. Adcock, O. Tschauner, E. M. Hausrath, A. Udry, S. N. Luo, Y. Cai, M. Ren, A. Lanzirotti, M. Newville, M. Kunz, C. Lin   +10 more
doaj   +1 more source

Thermal evolution and sintering of chondritic planetesimals IV. Temperature dependence of heat conductivity of asteroids and meteorites

, 2018
Understanding the compaction and differentiation of the planetesimals and protoplanets from the Asteroid Belt and the terrestrial planet region of the Solar System requires a reliable modeling of their internal thermal evolution.
Gail, Hans-Peter, Trieloff, Mario
core   +1 more source

Spectral properties of the largest asteroids associated with Taurid Complex [PDF]

, 2014
We obtained spectra of six of the largest asteroids (2201, 4183, 4486, 5143, 6063, and 269690) associated with Taurid complex. The observations were made with the IRTF telescope equipped with the spectro-imager SpeX.
Birlan, M., Cristescu, C. P., Nedelcu, D. A., Popescu, M., Vaubaillon, J.   +4 more
core   +2 more sources

Investigation and reclassification of four mesosiderites—Implications for their formation

Meteoritics &Planetary Science, EarlyView.
Abstract Mesosiderites are rare, differentiated meteorites, so‐called stony‐iron meteorites—they are impact breccias composed of an unusual mix of crustal basalt and pyroxenite, core‐derived metal, but no mantle materials. This odd mixture makes their origin enigmatic and has inspired many different formation theories over the last several decades ...
Gabriel Zachén, Carl Alwmark, Sanna Alwmark, Ludovic Ferrière, Roger H. Hewins   +4 more
wiley   +1 more source

Orbital evolution of P\v{r}\'{i}bram and Neuschwanstein

, 2011
The orbital evolution of the two meteorites P\v{r}\'{i}bram and Neuschwanstein on almost identical orbits and also several thousand clones were studied in the framework of the N-body problem for 5000 years into the past.
A. Pauls, B.A. Lindblad, D.C. Jones, D.C. Jones, D.O. ReVelle, H. Stauffer, I. Halliday, J. Oberst, J.S. Stuart, Juraj Tóth, Leonard Kornoš, P. Brown, P. Spurný, P. Vereš, P. Vereš, Peter Vereš, R.B. Southworth, V. Porubčan, W.F. Bottke, Z. Ceplecha, Z. Wu   +20 more
core   +1 more source

Petrography of phosphates in CI and CY carbonaceous chondrites

Meteoritics &Planetary Science, EarlyView.
Abstract Phosphate minerals are significant carriers of volatiles (e.g., OH) and halogens in chondritic material; however, their origin in most groups of carbonaceous chondrites remains poorly characterized. We have determined the abundance, morphology, texture, and composition of phosphate grains in aqueously altered CI chondrites and in hydrated and ...
C. S. Harrison, A. J. King, R. H. Jones, L. Piani   +3 more
wiley   +1 more source

Study of the Extraterrestrial Materials at Antarctica, IV. : On the Yamato Meteorites

Antarctic Record, 1974
Additional mineralogical and chemical studies of the Yamato meteorites are under way. The mode analysis and the optical properties in thin sections are examined under a microscope.
Makoto SHIMA, Akihiko OKADA, Masako SHIMA   +2 more
doaj   +1 more source

Laser Induced Breakdown Spectroscopy for Elemental Analysis in Environmental, Cultural Heritage and Space Applications: A Review of Methods and Results

Sensors, 2010
Analytical applications of Laser Induced Breakdown Spectroscopy (LIBS), namely optical emission spectroscopy of laser-induced plasmas, have been constantly growing thanks to its intrinsic conceptual simplicity and versatility.
Alessandro De Giacomo, Giorgio S. Senesi, Olga De Pascale, Rosalba Gaudiuso, Marcella Dell’Aglio   +4 more
doaj   +1 more source

The Mg/Fe ratio of silicate minerals in the meteoritic materials and in the circumstellar environment: A case study for the chondritic-like composition

Open Astronomy, 2021
Kaba meteorite as a reference material (one of a least metamorphosed and most primitive carbonaceous chondrites fell on Earth) was chosen for this study providing an adequate background for study of the protoplanetary disk or even the crystallization ...
Futó Péter, Vanyó József, Simonia Irakli, Sztakovics János, Nagy Mihály, Gucsik Arnold, Döncző Boglárka, Kertész Zsófia, Novák Richárd, Csámer Árpád   +9 more
doaj   +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