Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Igor S. Puchtel"'
Publikováno v:
Lithosphere, Vol 2024, Iss 3 (2024)
We report platinum-group element (PGE) and Re concentrations, and Re−Os isotopic data for peridotites and podiform chromitite from the mid-Jurassic Coast Range ophiolite (CRO), California. Our aim is to provide insights into the formation and evolu
Externí odkaz:
https://doaj.org/article/940201dee10646888029673f7f5d7797
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
The early Earth’s atmosphere had very low oxygen levels for hundreds of millions of years, until the 2.4 Ga Great Oxidation Event, which remains poorly understood. Here, the authors show that reducing Archean volcanic gases could have prevented atm
Externí odkaz:
https://doaj.org/article/88b11af823444112967ea95e8b8127a0
Publikováno v:
Minerals, Vol 12, Iss 11, p 1463 (2022)
In order to provide further insights into the origin of Ru-Os-Ir alloys, this study presents new highly siderophile element (HSE: Re, Os, Ir, Ru, Pt, and Pd) abundance and 187Re-187Os and 190Pt-186Os isotope data for detrital grains of native Ru-Os-I
Externí odkaz:
https://doaj.org/article/ac4cbbe7cdc64ffd996dd0cabffc7404
Autor:
Igor S. Puchtel
Publikováno v:
Petrology. 30:548-566
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b29be8a3d25f32f2d3ccf1070e796d0
https://doi.org/10.1134/s0869591122060054
https://doi.org/10.1134/s0869591122060054
Publikováno v:
The Canadian Mineralogist. 60:1045-1069
The abundance of Ru in chromite has been suggested as an indicator of sulfide liquid saturation in komatiites. The komatiite magma-derived Archean Coobina intrusion is known to be barren in terms of sulfide mineralization. Therefore, the Coobina intr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::390ae471b50df0cb3ccb0336dfde4c9f
https://doi.org/10.3749/canmin.2200006
https://doi.org/10.3749/canmin.2200006
Autor:
Igor S. Puchtel, Catherine M. Corrigan, Timothy J. McCoy, David W. Mittlefehldt, Richard D. Ash, Jessica M. Sunshine, S. D. Crossley
Publikováno v:
Meteoritics & Planetary Science. 55:2021-2043
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dfa3cd852f9fd6a4dcd38036e8bd15b5
https://doi.org/10.1111/maps.13558
https://doi.org/10.1111/maps.13558
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
Nature Communications
Nature Communications
Aerobic lifeforms, including humans, thrive because of abundant atmospheric O2, but for much of Earth history O2 levels were low. Even after evidence for oxygenic photosynthesis appeared, the atmosphere remained anoxic for hundreds of millions of yea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4fc864a6f8fbdfe5772dd6c896cb16dd
https://doaj.org/article/88b11af823444112967ea95e8b8127a0
https://doaj.org/article/88b11af823444112967ea95e8b8127a0
Publikováno v:
Geochemical Perspectives Letters. :25-29
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c94183f2cbc6863b856a55f723c239d6
https://doi.org/10.7185/geochemlet.2009
https://doi.org/10.7185/geochemlet.2009
Publikováno v:
Chemical Geology
Chemical Geology, 2022, 594, pp.120776. ⟨10.1016/j.chemgeo.2022.120776⟩
Chemical Geology, 2022, 594, pp.120776. ⟨10.1016/j.chemgeo.2022.120776⟩
International audience; Komatiites are crystallized samples of high-temperature, high-MgO lavas that were common during the Archean, but became increasingly rarer in the Proterozoic and Phanerozoic. Although the origin of komatiites remains a subject
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6418bfb139aa14854cdfabeff0c71851
https://hal.science/hal-03589592/document
https://hal.science/hal-03589592/document
Publikováno v:
Chemical Geology. 617:121255
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84ad3d084df4ea3598d03d7c03bd2718
https://doi.org/10.1016/j.chemgeo.2022.121255
https://doi.org/10.1016/j.chemgeo.2022.121255