Results 61 to 70 of about 3,477 (195)

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

open access: yesJournal 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   +4 more
wiley   +1 more source

CHARACTERIZATION OF VERMICULITE BY XRD AND SPECTROSCOPIC TECHNIQUES

open access: yesEarth 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  

Evolução geoquímica e mineralógica em perfis de alteração sobre rochas serpentinizadas no sudoeste de Minas Gerais Geochemical and mineralogical evolution in alteration profiles on serpentinized rocks in southwestern Minas Gerais, Brazil

open access: yesRevista Brasileira de Ciência do Solo, 2007
Estudou-se a evolução geoquímica e mineralógica em três perfis distintos de alteração de rochas serpentinizadas que ocorrem nas imediações dos municípios de Alpinópolis e Fortaleza de Minas, no sudoeste do Estado de Minas Gerais, sob regimes de umidade e
Pablo Vidal-Torrado   +4 more
doaj   +1 more source

Soil K‐bearing minerals respond differently to various potassium extraction methods targeting phytoavailability

open access: yesSoil Science Society of America Journal, Volume 89, Issue 6, November/December 2025.
Abstract Non‐exchangeable potassium (Nex‐K) released slowly from minerals is a key component of long‐term K fertility of agricultural soils. Two extraction methods are widely used to determine soil Nex‐K: the boiling nitric acid (HNO3) method and the tetraphenylborate (TPB) method.
Kohei Kurokawa   +7 more
wiley   +1 more source

Mineralogical and Crystalochemical Characterization of the Sepiolite Deposit from Andrichi (Pranjani Basin, Serbia) [PDF]

open access: yes, 2014
Depto. de Mineralogía y PetrologíaFac.
García Romero, Emilia   +3 more
core   +1 more source

Low-grade metamorphism around the down-dip limit of seismogenic subduction zones: Example from an ancient accretionary complex in the Shimanto Belt, Japan [PDF]

open access: yes, 2011
International audienceReactions involving clay minerals during low-grade metamorphism at the depth of an ancient accretionary complex in the Shimanto Belt, Kyushu, Japan, were studied by integrated transmission electron microscopy-energy dispersive X-ray
Kameda, Jun   +3 more
core   +3 more sources

Clay‐Mineral‐Coated Separators for Lithium‐Ion Batteries: Exploring the Relationships between Clay Mineral Morphology and Separator Performance

open access: yesAdvanced Science, Volume 12, Issue 40, October 27, 2025.
This review examines how coating Li‐ion battery separators with 1D, 2D, and 3D structured natural clay minerals influences their electrochemical and mechanical performance. It classifies 15 types of clay minerals and highlights structure–property correlations to offer practical design strategies for high‐performance separators in next‐generation energy
Inseo Ko   +6 more
wiley   +1 more source

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

open access: yesJournal 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  

Petrography and mineral chemistry of the Eocene granodiorites in the Toveireh area (Southwest of Jandaq, Isfahan province)

open access: yesJournal of Economic Geology, 2019
Introduction Granitoids are the most common igneous rocks that are found in all parts of the continental crust and play an important role in the formation and evolution of the Earth’s continental crust (Clarke, 1992).
Masumeh Sargazi, Ghodrat Torabi
doaj   +1 more source

Multiple plasmon resonances in naturally-occurring multiwall nanotubes: infrared spectra of chrysotile asbestos

open access: yes, 2002
Chrysotile asbestos is formed by densely packed bundles of multiwall hollow nanotubes. Each wall in the nanotubes is a cylindrically wrapped layer of $Mg_3 Si_2 O_5 (OH)_4$.
A. Marco Saitta   +15 more
core   +2 more sources

Home - About - Disclaimer - Privacy