Zobrazeno 1 - 10
of 109
pro vyhledávání: '"Stefan V Lalonde"'
Archean to early Paleoproterozoic iron formations document a transition in iron oxidation mechanisms
Autor:
Changle Wang, Leslie J. Robbins, Noah J. Planavsky, Nicolas J. Beukes, Laureline A. Patry, Stefan V. Lalonde, Maxwell A. Lechte, Dan Asael, Christopher T. Reinhard, Lianchang Zhang, Kurt O. Konhauser
Publikováno v:
Geochimica et Cosmochimica Acta. 343:286-303
Autor:
Pascal Philippot, Janaína N. Ávila, Bryan A. Killingsworth, Svetlana Tessalina, Franck Baton, Tom Caquineau, Elodie Muller, Ernesto Pecoits, Pierre Cartigny, Stefan V. Lalonde, Trevor R. Ireland, Christophe Thomazo, Martin J. van Kranendonk, Vincent Busigny
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-10 (2018)
The Great Oxidation Event (GOE) is considered to have occurred at 2.33–2.32 Ga based on the last occurrence of MIF-S in South Africa. Here, based on sulphur isotope analysis of samples from Western Australia, the authors show preservation of MIF-S
Externí odkaz:
https://doaj.org/article/93a9c072bdb94e9abd5bb84301b68084
Autor:
Eric Siciliano Rego, Vincent Busigny, Stefan V Lalonde, Camille Rossignol, Marly Babinski, Pascal Philippot
Publikováno v:
PNAS Nexus (2752-6542) (Oxford University Press (OUP)), 2023-03, Vol. 2, N. 3, P. pgad025 (7p.)
The availability of nutrients in seawater, such as dissolved phosphorus (P), is thought to have regulated the evolution and activity of microbial life in Earth's early oceans. Marine concentrations of bioavailable phosphorus spanning the Archean Eon
Autor:
Hervé Bellon, Jacek Gieraltowski, François Michaud, Gaëlle Simon, Stéphane Cerantola, Martin Homann, Ian Foster, Pascal Ballet, Stefan V. Lalonde
Precambrian metasediments provide a unique archive for understanding Earth’s earliest biosphere, however traces of microbial life preserved in ancient rocks are often controversial. In this study we leveraged several micro- to nano-scale techniques
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99c4b97692c6eae7df621813df64792d
https://doi.org/10.1101/2023.02.08.527618
https://doi.org/10.1101/2023.02.08.527618
Autor:
Kaarel Mänd, Stefan V. Lalonde, Kärt Paiste, Marie Thoby, Kaarel Lumiste, Leslie J. Robbins, Timmu Kreitsmann, Alexander E. Romashkin, Kalle Kirsimäe, Aivo Lepland, Kurt O. Konhauser
Publikováno v:
Minerals, Vol 11, Iss 4, p 368 (2021)
The Zaonega Formation in northwest Russia (~2.0 billion years old) is amongst the most complete successions that record the middle of the Palaeoproterozoic era. As such, geochemical data from the formation have played a central role in framing the de
Externí odkaz:
https://doaj.org/article/b8ce86e53e474467b24d08cbf128c614
Autor:
Farid Saleh, Bernard Pittet, Pierre Sansjofre, Bertrand Lefebvre, Stefan V. Lalonde, Victoire Lucas
Publikováno v:
Terra Nova (0954-4879) (Wiley), 2022-06, Vol. 34, N. 3, P. 163-168
Terra Nova
Terra Nova, 2022, 34 (3), pp.163-168. ⟨10.1111/ter.12572⟩
Terra Nova
Terra Nova, 2022, 34 (3), pp.163-168. ⟨10.1111/ter.12572⟩
The Fezouata Shale in Morocco is the most diverse Lower Ordovician unit yielding soft-tissue preservation. Iron played a crucial role in the preservation of soft parts in this formation through the damage of bacterial membranes under oxic conditions
Publikováno v:
Geochimica et Cosmochimica Acta. 313:313-339
Earth’s Great Oxidation Event (GOE), ca. 2.5–2.0 Ga, was one of the most extreme environmental perturbations in the history of the planet. In addition to the first sustained accumulation of O2 in the atmosphere, the latter half of the GOE is asso
Autor:
Dylan T. Wilmeth, Stefan V. Lalonde, William M. Berelson, Victoria Petryshyn, Aaron J. Celestian, Nicolas J. Beukes, Stanley M. Awramik, John R. Spear, Taleen Mahseredjian, Frank A. Corsetti
Publikováno v:
Geology (0091-7613) (Geological Society of America), 2022-08, Vol. 50, N. 8, P. 907-911
The evolution of oxygenic photosynthesis fundamentally altered the global environment, but the history of this metabolism prior to the Great Oxidation Event (GOE) at ca. 2.4 Ga remains unclear. Increasing evidence suggests that non-marine microbial m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c12494bf4df04d7d21cf2dcb487e518
https://archimer.ifremer.fr/doc/00770/88243/
https://archimer.ifremer.fr/doc/00770/88243/
Autor:
Daniel A. Petrash, Ingrid M. Steenbergen, Astolfo Valero, Travis B. Meador, Stefan V. Lalonde, Christophe Thomazo
In the oligotrophic bottom waters of a post-mining lake (Lake Medard, Czechia), ferruginous conditions occur without quantitative sulfate depletion. The dissolved organic matter supply to the deep waters is small and, accordingly, sulfate reduction p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6721304da6260547a1a50a9085a62b0
https://doi.org/10.5194/egusphere-egu22-183
https://doi.org/10.5194/egusphere-egu22-183
Autor:
Andreas Kappler, Leslie J. Robbins, Manuel Schad, Julian Tejada, Maximilian Halama, Noah J. Planavsky, Muammar Mansor, Stefan V. Lalonde, Kurt O. Konhauser, Tyler J. Warchola, Elizabeth D. Swanner, Rainer Kirchhof, Harald Thorwarth, Natalia Jakus
Publikováno v:
Chemical Geology
Chemical Geology, 2021, 584, pp.120489. ⟨10.1016/j.chemgeo.2021.120489⟩
Chemical Geology, 2021, 584, pp.120489. ⟨10.1016/j.chemgeo.2021.120489⟩
Ratios of phosphorous (P) to iron (Fe) in Precambrian banded iron formations (BIFs) have previously been used to estimate dissolved seawater phosphate concentrations in the ancient oceans. Such studies rely on an assumed composition of the primary ir
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f59f4b0398377022aea02aae11f61391
https://hal.archives-ouvertes.fr/hal-03401437
https://hal.archives-ouvertes.fr/hal-03401437