Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Olivier Alard"'
Autor:
Raham Jalil, Olivier Alard, Bruce Schaefer, Liaqat Ali, Muhammad Sajid, Mohamed Zaki Khedr, Mohammad Tahir Shah, Muhammad Naveed Anjum
Publikováno v:
Minerals, Vol 13, Iss 3, p 311 (2023)
The Waziristan ophiolite complex (WOC), a segment of paleo-suture zone between the Indo-Pakistan plate to the south-east and the Afghan microplate to the north-west, is primarily composed of serpentinized dunites and serpentinites after harzburgites,
Externí odkaz:
https://doaj.org/article/c2dcc1b7d01945e98588aa41a4fd0810
Autor:
William L. Griffin, Sarah E. M. Gain, Martin Saunders, Olivier Alard, Jeremy Shaw, Vered Toledo, Suzanne Y. O’Reilly
Publikováno v:
Minerals, Vol 11, Iss 7, p 780 (2021)
Titanium oxynitrides (Ti(N,O,C)) are abundant in xenolithic corundum aggregates in pyroclastic ejecta of Cretaceous volcanoes on Mount Carmel, northern Israel. Petrographic observations indicate that most of these nitrides existed as melts, immiscibl
Externí odkaz:
https://doaj.org/article/2b3fff87d02b45eaab4e0fe20cb1eb78
Autor:
Le Thi-Thu Huong, Laura M. Otter, Michael W. Förster, Christoph A. Hauzenberger, Kurt Krenn, Olivier Alard, Dorothea S. Macholdt, Ulrike Weis, Brigitte Stoll, Klaus Peter Jochum
Publikováno v:
Minerals, Vol 8, Iss 6, p 234 (2018)
Danburite is a calcium borosilicate that forms within the transition zones of metacarbonates and pegmatites as a late magmatic accessory mineral. We present here trace element contents obtained by femtosecond laser ablation-inductively coupled plasma
Externí odkaz:
https://doaj.org/article/d3e15810d3fa407b893d6163d8c58bfa
Publikováno v:
Geostandards and Geoanalytical Research. 47:437-456
Publikováno v:
Geochimica et Cosmochimica Acta. 341:1-15
Autor:
William L. Griffin, Sarah E.M. Gain, Martin J. Saunders, Jin-Xiang Huang, Olivier Alard, Vered Toledo, Suzanne Y. O'Reilly
Publikováno v:
American Mineralogist. 107:532-549
Xenolithic corundum aggregates in Cretaceous mafic pyroclastics from Mount Carmel contain pockets of silicate melts with mineral assemblages [SiC (moissanite), TiC, Ti2O3 (tistarite), Fe-Ti-Zr silicides/phosphides] indicative of magmatic temperatures
Publikováno v:
Journal of African Earth Sciences. 202:104901
Publikováno v:
Nature Geoscience
Nature Geoscience, 2022, 15 (11), pp.856-857. ⟨10.1038/s41561-022-01065-3⟩
Nature Geoscience, 2022, 15 (11), pp.856-857. ⟨10.1038/s41561-022-01065-3⟩
International audience
Autor:
Vered Toledo, Suzanne Y. O'Reilly, Martin Saunders, William L. Griffin, Olivier Alard, Luca Bindi, Sarah E. M. Gain
Publikováno v:
American Mineralogist. 105:1609-1621
Titanium diboride (TiB2) is a minor but common phase in melt pockets trapped in the corundum aggregates that occur as xenoliths in Cretaceous basaltic volcanoes on Mt. Carmel, north Israel. These melt pockets show extensive textural evidence of immis
Publikováno v:
Geochimica et Cosmochimica Acta
Geochimica et Cosmochimica Acta, Elsevier, 2020, 269, pp.270-291. ⟨10.1016/j.gca.2019.10.038⟩
Geochimica et Cosmochimica Acta, Elsevier, 2020, 269, pp.270-291. ⟨10.1016/j.gca.2019.10.038⟩
Ordinary chondrites (OCs) are classified into three groups, according to their oxidation state, which increases from the H to L to LL groups. This is demonstrated by the decrease in metal content (H=~8 vol%, L=~4 vol%, and LL=~2 vol%), and by a posit