Results 111 to 120 of about 44,847 (250)

Oxygen Isotopic Composition of Miocene Meteoric Water (δ18Ow) in Alpine Foreland Basins

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract The reconstructed stable oxygen isotopic composition of meteoric water (δ18Ow) is widely used for paleoclimate reconstructions. Understanding past environmental factors that drove changes in δ18Ow is essential for interpreting past climate conditions.
Armelle Ballian, Maud J. M. Meijers, Daniel Boateng, Isabelle Cojan, Sebastian G. Mutz, Todd A. Ehlers, Andreas Mulch   +6 more
wiley   +1 more source

Long‐Distance Aeolian Dust Deposited on the Island of Crete (Greece): Detection, Characterization, and Provenance

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 8, August 2026.
Abstract Long‐distance aeolian dust transport represents one of the largest sediment fluxes on Earth, with North Africa being a dominant source. The island of Crete in the Eastern Mediterranean lies within major transport pathways but remains underexplored regarding multi‐proxy fingerprinting of deposited dust.
S. Bitzan, C. L. Blanchet, S. Pichat, G. E. Christidis, K. Schepanski, F. Kirsten   +5 more
wiley   +1 more source

Study on the Improvement Performance of Different Clay Components with Desulfurization Gypsum-Containing Cementitious Material

Buildings
The use of cementitious materials to improve clay is a common technique in engineering. However, the effectiveness of these materials, particularly desulfurized gypsum, on clays with different mineral compositions remains unclear, resulting in a lack of ...
Tingzhu Chen, Xin Dong, Hongxu Chen, Feng Zhou, Gang Liu, Wei Chang, Rui Zhu   +6 more
doaj   +1 more source

Structurally‐Controlled Permeability Evolution and Mineralization in Geothermal Caprocks: The Fenice Capanne Mining District (Southern Tuscany, Italy)

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract The Neogene mineralized region of the Colline Metallifere in southern Tuscany (Italy) provides a natural laboratory to investigate feedback between fluid–rock interaction, structurally controlled fluid flow, and hydrothermal ore mineralization.
Barbara Marchesini, Federico Rossetti, Ahmad Rabiee, Andrea Billi, Andrea Cavallo, Davide Novella, Vincenzo Moretto, Antonio Caracausi, Fabio Trippetta, Luca Aldega, Luigi Dallai, Giovanni Ruggieri, Eugenio Carminati   +12 more
wiley   +1 more source

Climate conditions on the South‐Iberian Palaeomargin during the latest Pliensbachian to early Toarcian: A mineralogical and geochemical study from hemipelagic deposits

Sedimentology, Volume 73, Issue 5, Page 1631-1663, August 2026.
ABSTRACT The integrated analysis of lithofacies, mineralogy and geochemistry of the hemipelagic marine succession exposed in La Cerradura section (South‐Iberian Palaeomargin) provides new information to characterise the palaeoenvironmental conditions during the latest Pliensbachian to early Toarcian, including the Jenkyns Event.
Chaima Ayadi, Isabel Abad, Elisa Laita, Ali Mokhtar Samet, Matías Reolid   +4 more
wiley   +1 more source

Mid‐infrared spectroscopy applied to a multi‐level cave system (Montmaurin, SW France): An innovative method for assessing sediment provenance

Sedimentology, Volume 73, Issue 5, Page 1722-1749, August 2026.
ABSTRACT Deciphering sediment provenance is essential to understand depositional patterns and dynamics. This question is particularly important in archaeological contexts to constrain the sedimentological history of unearthed material—an information critically needed, for example, to estimate the age of the deposits—or to apprehend sediment movement ...
Fuchs Coraline, Rambeau Claire, Ertlen Damien, Rixhon Gilles, Perrenoud Christian, Ponche Jean‐Luc, Trautmann Martine, Benarioumlil Sylvain, Vialet Amélie   +8 more
wiley   +1 more source

Source‐to‐sink sediment transport reversals during glacial sea‐level lowstands sustain soil formation on pericoastal carbonate terrains

Sedimentology, Volume 73, Issue 5, Page 1892-1910, August 2026.
ABSTRACT Understanding the processes that drive soil formation is crucial for developing sustainable land‐use strategies, as changing land‐use practices and climate change exacerbate soil erosion. The formation of substantial arable soils on carbonate bedrock requires substantial dust accretion as the underlying bedrock lacks siliciclastic material. In
Daniel Palchan, Yael Jacobi Glass, Olga Berlin, Yoav Ben Dor   +3 more
wiley   +1 more source

Enhancing the properties of high-density oil well cement with Qusaiba kaolinite

Scientific Reports
High-density cement slurries used in oil well cementing often face challenges such as particle settling, poor rheological properties, permeability, and compressive strength degradation, which can compromise zonal isolation and well integrity.
Abdulmalek Ahmed, Ahmed Abdulhamid Mahmoud, Salaheldin Elkatatny, Dhafer Al Shehri, Korhan Ayranci   +4 more
doaj   +1 more source

Assessment of a feed additive consisting of montmorillonite‐illite mixed layer clay mineral (1g557) for all animal species for the renewal of its authorisation (FIM Biotech GmbH)

EFSA Journal, Volume 24, Issue 8, August 2026.
Abstract Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the renewal of montmorillonite‐illite mixed layer clay mineral as a technological feed additive for all animal species. The applicant has provided evidence that the additive currently on the market complies with the existing conditions of ...
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP), Roberto Edoardo Villa, Giovanna Azimonti, Eleftherios Bonos, Henrik Christensen, Mojca Durjava, Birgit Dusemund, Ronette Gehring, Boet Glandorf, Maryline Kouba, Marta López‐Alonso, Francesca Marcon, Giovanna Martelli, Carlo Nebbia, Alena Pechová, Miguel Prieto‐Maradona, Katerina Theodoridou, Jaume Galobart, Maria Vittoria Vettori, Orsolya Holczknecht, Fabiola Pizzo, Piera Valeri   +21 more
wiley   +1 more source

Adsorption characteristics of metal ions on kaolinite

矿业科学学报, 2017
The adsorption of negative charge on kaolinite particles surface is the main reason that causes coal slime water settle difficult.By studing adsorption dynamics of Ca2+, Mg2+, K+ and Na+ on kaolinite, adsorption tests of single kind of ions on kaolinite,
Zhang Zhijun, Li Ya’nan, Tong Zhenyang, Nong Haitao, Chen Xi   +4 more
doaj