Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Ahmed El Goresy"'
Autor:
Farhang Nabiei, James Badro, Teresa Dennenwaldt, Emad Oveisi, Marco Cantoni, Cécile Hébert, Ahmed El Goresy, Jean-Alix Barrat, Philippe Gillet
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018)
Ureilites are a type of meteorite that are believed to be derived from a parent body that was impacted in the early solar system. Here, the authors analyse inclusions within diamonds from a ureilite meteorite and find that they must have formed at ab
Externí odkaz:
https://doaj.org/article/b4c2bde440254a8e830f0faa39f1eca6
Autor:
Chris Ballhaus, Felipe P Leitzke, Raúl O C Fonseca, Thorsten Nagel, Dmitri Kuzmin, Ahmed El Goresy
Publikováno v:
Journal of Petrology. 63
It is not well known which chemical differentiation pathways basaltic melts will take when they are iron metal saturated. Thermodynamically, the pathway seems predictable. So long as Fe metal is a stable liquidus phase and relative oxygen fugacity (f
Publikováno v:
Physics of the Earth and Planetary Interiors. 291:1-11
Shock-induced melting textures and assemblages in the chassignite Northwest Africa (NWA) 2737 were investigated. NWA 2737 consists mainly of coarse-grained olivine (Fa19.6–20.5) and minor amounts of low-Ca pyroxene, plagioclase (now maskelynite), a
Autor:
Thorsten J. Nagel, Chris Ballhaus, Felipe Padilha Leitzke, Ahmed El Goresy, Raúl O.C. Fonseca
Publikováno v:
Goldschmidt2021 abstracts.
Publikováno v:
Geochimica et Cosmochimica Acta. 232:48-81
Oxygen, magnesium, and silicon isotopic compositions in the mineralogically complex, ultrarefractory (UR) calcium-aluminum-rich inclusion (CAI) E101.1 from the reduced CV3 chondrite Efremovka confirm that E101.1 is a compound CAI composed of several
Autor:
Teresa Dennenwaldt, Farhang Nabiei, Philippe Gillet, Ahmed El Goresy, Jean-Alix Barrat, Marco Cantoni, Emad Oveisi, Cécile Hébert, James Badro
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018)
Nature Communications
Nature Communications (2041-1723) (Nature Publishing Group), 2018-04, Vol. 9, N. 1327, P. 6p.
Nature Communications, Nature Publishing Group, 2018, 9 (1), ⟨10.1038/s41467-018-03808-6⟩
Nature Communications, 2018, 9, pp.1327. ⟨10.1038/s41467-018-03808-6⟩
Nature Communications, Nature Publishing Group, 2018, 9, pp.1327. ⟨10.1038/s41467-018-03808-6⟩
Nature Communications
Nature Communications (2041-1723) (Nature Publishing Group), 2018-04, Vol. 9, N. 1327, P. 6p.
Nature Communications, Nature Publishing Group, 2018, 9 (1), ⟨10.1038/s41467-018-03808-6⟩
Nature Communications, 2018, 9, pp.1327. ⟨10.1038/s41467-018-03808-6⟩
Nature Communications, Nature Publishing Group, 2018, 9, pp.1327. ⟨10.1038/s41467-018-03808-6⟩
Planetary formation models show that terrestrial planets are formed by the accretion of tens of Moon- to Mars-sized planetary embryos through energetic giant impacts. However, relics of these large proto-planets are yet to be found. Ureilites are one
Autor:
Eiji Ohtani, L. Feng, Masaaki Miyahara, Toshiro Nagase, Sen Hu, Yangting Lin, Ahmed El Goresy
Publikováno v:
American Mineralogist. 102:1254-1262
Akimotoite [(Mg,Fe)SiO 3 -ilmenite] was encountered in shock-induced melt veins of Grove Mountains (GRV) 052082, a highly equilibrated low iron ordinary chondritic meteorite (L6). Coexistence of ringwoodite, majorite, and majorite-pyrope solid soluti
Publikováno v:
Physics of the Earth and Planetary Interiors. 259:18-28
Tissint is a heavily shocked olivine-phyric shergottite. We investigated and documented several phase transformations and dissociation phenomena of olivine adjacent to and in many shock-induced melt-pockets of Tissint. Olivine grains entrained in the
Autor:
Ahmed El Goresy, Gerhard Schmidt
Publikováno v:
Geological Magazine. 156:1639-1640
Autor:
Philippe Gillet, Masaaki Miyahara, Toshiro Nagase, L. Feng, Masahiko Nishijima, Ahmed El Goresy, Jun Muto, Jianchao Zhang, Yangting Lin, Eiji Ohtani
Publikováno v:
Geochimica et Cosmochimica Acta. 163:14-26
The Almahata Sitta MS-170 ureilite (a piece of a breccia originating from the asteroid, 2008 TC3) consists mainly of olivine, with many diamond and graphite grains existing between the olivine grains. The occurrences of the diamonds are unique; i.e.,