Results 71 to 80 of about 5,265 (264)

Investigating the potential barrier function of nanostructured materials formed in engineered barrier systems (EBS) designed for nuclear waste isolation [PDF]

, 2019
"This is the peer reviewed version of the following article: Jaime Cuevas Ana Isabel Ruiz Raúl Fernández, "Investigating the Potential Barrier Function of Nanostructured Materials Formed in Engineered Barrier Systems (EBS) Designed for Nuclear Waste ...
Aggarwal, Alonso, Brookins, Bullard, Cowley, Cuevas, Cuevas, Cuevas, Cuevas, Cuevas, Drebushchak, Eberl, Ehlmann, Fernández, Fernández, Fernández, Fernández, Fernández, Fernández, Garcia-Lodeiro, Gates, Glasser, Grangeon, Guven, Huertas, Irwin, Komarneni, Leisinger, Madejova, Meunier, Nied, Pardal, Plusquellet, Pokrovsky, Richardson, Richardson, Richardson, Ridi, Roosz, Salah, Savage, Schindler, Sevelsted, Smart, Sun, Tonelli, Vidales, Zhang   +47 more
core   +1 more source

Mineral Weathering Experiments for Terrestrial Planetary Analogs in a Continuous‐Flow Reactor

Geofluids, Volume 2026, Issue 1, 2026.
Understanding the groundwater environments for ancient Mars and other terrestrial bodies is of great interest for evaluating their habitability. Here, we experimentally tested simulated aqueous alterations of two Mars simulants (variants of MGS‐1) using a continuous‐flow packed bed reactor, reacting with three ionic simulated groundwater analog ...
Jessica M. Weber, Eduardo Martinez, Rachel Y. Sheppard, Laura E. Rodriguez, Aaron Celestian, Bronwyn L. Teece, Laura M. Barge, Pramita Mishra   +7 more
wiley   +1 more source

The Petrogenesis of the Early Permian Variscan granites of the Cornubian Batholith - lower plate post-collisional peraluminous magmatism in the Rhenohercynian Zone of SW England [PDF]

, 2016
This is the author accepted manuscript. The final version is available from the publisher via the DOI in this record.The Early Permian Cornubian Batholith was generated during an extensional regime following Variscan convergence within the ...
Andersen, JCO, Shail, RK, Simons, BJ
core   +1 more source

Oxychlorine Species on Mars: A Review

Reviews of Geophysics, Volume 63, Issue 4, December 2025.
Abstract Oxychlorine species (mainly perchlorate and chlorate) have been identified at multiple locations on the surface of Mars by both orbiter and in situ rovers. They have also been found in martian meteorites. Cl‐isotopes in meteoritic minerals suggest that an oxychlorine cycle has been operating on the martian surface for the last ∼4 billion years.
Kaushik Mitra
wiley   +1 more source

Low-temperature behavior of natural kalsilite with P31c symmetry: An in situ single-crystal X-ray diffraction study [PDF]

, 2010
The low-temperature behavior of a natural kalsilite (ideal formula KAlSiO4) with P31c symmetry has been investigated by in situ single-crystal diffraction. A series of intensity data collections and structural refinements have been performed at 298, 250,
Angel, Ross J., Carpenter, Michael A., Gatta, G. Diego   +2 more
core   +1 more source

Palagonitization of Volcanic Rocks in Polar Climates: The Case of Deception Island (Antarctica)

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract A detailed study of palagonitization in rocks from Deception Island—one of Antarctica's most active volcanoes—has been performed to advance our understanding of this alteration process. A detailed petrographic (optical and SEM), mineralogical (XRD), and mineral and glass spot geochemistry (EDS and EMP) characterization has been conducted on ...
Oriol Vilanova‐Pagès, Guillem Gisbert, Helena Albert, Adelina Geyer, Meritxell Aulinas, Raquel Arasanz, Jordi Ibañez‐Insa, Antonio Polo‐Sánchez, Antonio Álvarez‐Valero, Olga Prieto‐Ballesteros, Santiago Giralt   +10 more
wiley   +1 more source

CHARACTERIZATION OF VERMICULITE BY XRD AND SPECTROSCOPIC TECHNIQUES

Earth Sciences Research Journal, 2009
A natural mineral from Santa Marta-Colombia used as the starting material in the synthesis of pillared clays has been characterized by several techniques, including X-ray diffraction, X-ray fluorescence, electronic paramagnetic resonance, aluminum ...
Molina R., Moreno S., Campos A.
doaj  

Thermal Reactions of Smectite Minerals at Earthquake Timescales

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract Frictional heating causes a transient temperature rise in fault zones during earthquakes that leads to metamorphic reactions within the fault rocks. The products of these reactions provide potential evidence of earthquakes in both the outcrop and drill core. Clay minerals such as smectites are commonly found in faults.
Julia E. Krogh, Heather M. Savage, Randolph T. Williams, Pratigya J. Polissar, Christie D. Rowe   +4 more
wiley   +1 more source

Laboratory‐Constrained Seismic Properties of the COSC‐2 Borehole, Scandinavian Caledonides: Implications for Crustal Anisotropy and Reflectivity

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.
Abstract Seismic surveys are essential for studying the Earth's subsurface. However, the interpretation of seismic surveys requires a link between field data and rock physical properties by linking laboratory‐derived data from drill core samples with borehole information and seismic images.
Markus Rast, Claudio Madonna, Nora Schweizer, Bjarne S. G. Almqvist, Jonas B. Ruh   +4 more
wiley   +1 more source

Mineral Chemistry of Chlorite Replacing Biotite from Granitic Rocks of the Canadian Appalachians [PDF]

Journal of Sciences, Islamic Republic of Iran, 2009
Chlorite flakes, as a product of alteration of biotite, the dominant ferromagnesian mineral in the Paleozoic granitic rocks of the Canadian Appalachians, have been analyzed by electron microprobe for major elements and by 57Fe M?ssbauer spectroscopy for ...
A.A. Tabbakh Shabani
doaj