Results 71 to 80 of about 19,693 (231)

Radiolysis and Fe‐Biotite Alteration: Questioning the Origin of H2‐Bearing Fluid Inclusions in the Yorke Peninsula Granites, South Australia

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Multiple drillings in the Yorke Peninsula, South Australia, recently confirmed the presence of natural hydrogen (H2) in shallow sedimentary units. While radiolysis and Fe‐oxidation in the basement are potential generation mechanisms, their respective contributions remain unconstrained.
Ugo Geymond, Dan Lévy, Julien Bourdet, Isabelle Martinez, Olivier Sissmann, Sidonie Revillon, Rayanne Gormit, Sylvain Bernard, Pierre‐Henri Blard, David Bekaert, Jimmy Daynac, Stephan Borensztajn, Se Gong, Clément Herviou, Emanuelle Frery, Isabelle Moretti   +15 more
wiley   +1 more source

Key New Evidence for the Hainan Mantle Plume Head: Ongoing Formation of a Large Igneous Province?

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract The process‐based surface magmatic expression of mantle plumes is typically a large igneous province (LIP) induced by the mantle plume head, followed by subsequent age‐progressive volcanic tracks resulting from plate drifting above the plume tail.
F. Yang, X. L. Huang, L. Liu, Y. G. Xu, Y. Hua, P. L. He, L. Zhang, W. F. Zhang, Y. Yu, H. Y. Li   +9 more
wiley   +1 more source

Shelf-Ocean material exchange influencing the Atlantic chemical composition off NW Iberian margin since the last glaciation [PDF]

, 2010
Rivers are the main conduit of sediment to the shelf. The basin geology, the drainage area and the discharge rate are the major factors that determine their sediment load (Milliman and Syvistski, 1992).
Dias, J. A., Ferreira da Silva, E., Martins, V., Ribeiro, S., Rocha, F., Santos, J. F., Silva, T.   +6 more
core   +1 more source

Hornblendite in the Lower Crust: A Possible Source for Porphyry Cu Deposits

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Lower crustal sulfide‐bearing Cu‐rich cumulates, mainly occurring as hornblendite, have been proposed as a critical source component for the development of giant porphyry Cu deposits (PCDs); however, their mineralogical and geochemical nature remain elusive.
Guangxu Li, Lingsen Zeng, Li‐E. Gao, Lilong Yan, Haitao Wang, Linghao Zhao   +5 more
wiley   +1 more source

The Influence of Basaltic Islands on the Oceanic REE Distribution: A Case Study From the Tropical South Pacific

Frontiers in Marine Science, 2018
The Rare Earth Elements (REEs) have been widely used to investigate marine biogeochemical processes as well as the sources and mixing of water masses. However, there are still important uncertainties about the global aqueous REE cycle with respect to the
Mario Molina-Kescher, Ed C. Hathorne, Anne H. Osborne, Melanie K. Behrens, Martin Kölling, Katharina Pahnke, Martin Frank   +6 more
doaj   +1 more source

Past changes in riverine input and ocean circulation in the Gulf of Guinea [PDF]

, 2012
Large river systems draining the West African Monsoon area deliver sediments and dissolved trace elements into the Gulf of Guinea (GoG) in the easternmost equatorial Atlantic.
Frank, Martin, Hathorne, Ed, Kraft, Steffanie, Weldeab, Syee   +3 more
core  

Leveraging the TabPFN Algorithm for High‐Resolution Mapping of Groundwater Bicarbonate and Its Scaling Risk Across China

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract Large‐scale groundwater quality prediction is often constrained by sparse sampling, limiting the reliability of spatial assessments. This study introduces Tabular Prior‐data Fitted Network (TabPFN), a machine learning model based on prior‐fitting networks, to address this challenge and enable high‐precision mapping of groundwater bicarbonate ...
Tong Sun, Fubin Zhang, Li He, Yanan Tian, Yao Wang, Haochuan Guo, Xiao Liu, Mengxi He, Quanzhou Li   +8 more
wiley   +1 more source

Thorium determination in seawater by inductively coupled plasma mass spectrometry: Method development and oceanographic applications

Talanta Open
Thorium isotopes in the ocean (including radiogenic isotopes and terrigenous-derived 232Th) serve as key tracers for studying land-derived material transport. While high-sensitivity and high-resolution inductively coupled plasma mass spectrometry (ICP-MS)
Yingjie Zou, Peng Wang, Lei Xu, Hong Ren, Yiyao Cao   +4 more
doaj   +1 more source

The possible existence of Hs in nature from a geochemical point of view [PDF]

, 2006
A hypothesis of the existence of a long-lived isotope 271Hs in natural molybdenites and osmirides is considered from a geochemical point of view. It is shown that the presence of Hs in these minerals can be explained only by making an additional ad hoc ...
A. D. Brandon, A. D. Smith, A. Meibom, A. Meibom, A. Narinov, A. Sobiczewski, A. V. Ivanov, A. V. Ivanov, Ch. E. Düllmann, D. L. Anderson, D. Selby, G. R. Foulger, G. Royer, H. J. Stein, H. J. Stein, H. Meier, J. G. Raith, J. M. Bird, J. Morris, J. P. Davidson, J. V. Kratz, K. A. Petrzhak, R. D. Cherry, R. Eichler, R. Gentry, R. J. Walker, R. J. Walker, S. Hofmann, S. V. Balyshev, T. V. Galashvili, V. P. Perelygin, W. M. White, Yu. Oganessian   +32 more
core   +2 more sources

Integrating Sr isotopes, microchemistry, and genetics to reconstruct Salmonidae species and life history

Archaeometry, Volume 68, Issue S2, Page S104-S129, May 2026.
Abstract Recent approaches to fisheries research emphasize the importance of the coproduction of knowledge in building resilient and culturally mindful fisheries management frameworks. Despite widespread recognition of the need for Indigenous knowledge and historical reference points as baseline data, archaeological data are rarely included in ...
Ross Salerno, Remi Murdoch, Joanna Elmore, Taylor Wilcox, Jens Hegg, Catherine S. Austin, Michael LeMoine, Jade Luckhurst, Alexandra K. Fraik, Molly Carney   +9 more
wiley   +1 more source