Zobrazeno 1 - 10
of 786
pro vyhledávání: '"clumped isotopes"'
Publikováno v:
AGU Advances, Vol 5, Iss 5, Pp n/a-n/a (2024)
Abstract Because of its global abundance and reactivity with hydroxyl radicals (OH•), tropospheric carbon monoxide indirectly impacts the lifetimes of other OH•‐reactive gases, in particular methane and reactive hydrocarbons. The origin and che
Externí odkaz:
https://doaj.org/article/05890aeee614440ea3ba07826fbba95f
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 25, Iss 6, Pp n/a-n/a (2024)
Abstract The proliferation of microbial carbon fixation is a key control on the evolution of the biosphere and global carbon cycle. Most records of these metabolisms in ancient rocks come from organic matter or fossils, which are not always preserved
Externí odkaz:
https://doaj.org/article/a54506959231491a9acba441a7f0f1ac
Autor:
Adam M. Hudson, Julia R. Kelson, James B. Paces, Chester A. Ruleman, Katharine W. Huntington, Andrew J. Schauer
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 25, Iss 4, Pp n/a-n/a (2024)
Abstract Clumped isotope paleothermometry using pedogenic carbonates is a powerful tool for investigating past climate changes. However, location‐specific seasonal patterns of precipitation and soil moisture cause systematic biases in the temperatu
Externí odkaz:
https://doaj.org/article/a5180399d1a040e9988b0e6a858a1bff
Autor:
Ismay Vénice Akker, Raphael Schneeberger, Marco Herwegh, Nathan Looser, Lukas Aschwanden, Martin Mazurek, Kurt Decker, Andreas Ebert, Marcel Guillong, Stefano M. Bernasconi, Christoph Schrank, Michael W. M. Jones, Andrew Langendam, Herfried Madritsch
Publikováno v:
Swiss Journal of Geosciences, Vol 116, Iss 1, Pp 1-28 (2023)
Abstract The Middle-Jurassic Opalinus Clay is the foreseen host rock for radioactive waste disposal in central northern Switzerland. An extensive drilling campaign aiming to characterize the argillaceous formation resulted in a comprehensive drill co
Externí odkaz:
https://doaj.org/article/fddec887cd82403385799dfd2ccc6769
Autor:
Marta Marchegiano, Marion Peral, Jeroen Venderickx, Koen Martens, Antonio García‐Alix, Christophe Snoeck, Steven Goderis, Philippe Claeys
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 4, Pp n/a-n/a (2024)
Abstract This study presents a methodological advancement in the field of clumped‐isotope (∆47) thermometry, specifically tailored for application to freshwater ostracods. The novel ostracod clumped isotope approach enables quantitative temperatu
Externí odkaz:
https://doaj.org/article/b19db2720edc4da99fc629e048ab3bf9
Publikováno v:
The Depositional Record, Vol 9, Iss 3, Pp 607-634 (2023)
Abstract The Niobrara Formation of north‐east Colorado, USA, has anomalously negative δ18O values compared to all other Cretaceous chalks. These unique δ18O values have been attributed to elevated heat flow and/or freshening of the Cretaceous Wes
Externí odkaz:
https://doaj.org/article/086e585d74644562ab16cb3921c5a0d9
Autor:
Philip Staudigel, Chelsea Pederson, Jeroen van derLubbe, Miguel Bernecker, Mattia Tagliavento, Amelia Davies, Adrian Immenhauser, Jens Fiebig
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 24, Iss 10, Pp n/a-n/a (2023)
Abstract The geochemical and ultrastructural properties of thermally altered skeletal carbonate are expected to be compromised to varying degrees by disequilibrium processes between solids and the ambient aqueous fluids. When assessing the alteration
Externí odkaz:
https://doaj.org/article/7f3c04feedc046959f66faefe5bb454b
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 24, Iss 10, Pp n/a-n/a (2023)
Abstract Recent interlaboratory efforts have enabled methodological refinements in carbonate clumped isotope geochemistry, including the adoption of a carbonate‐based reference frame, the InterCarb Carbon Dioxide Equilibration Scale (I‐CDES). Thi
Externí odkaz:
https://doaj.org/article/d5ef1e429a854c6986bf02076ced200c
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Akademický článek
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