Results 31 to 40 of about 1,456,955 (125)

Rare Earth Element Potential in the Araí Rift Metavolcanic, Central Brazil: Gamma‐Ray Signatures, Mineralogy and Exploration Implications

open access: yesTerra Nova, EarlyView.
ABSTRACT Although central Brazil hosts significant ion‐adsorption rare earth element (REE) deposits associated with A‐type granites, their coeval volcanic counterparts have been largely overlooked as exploration targets. This study demonstrates that acidic metavolcanic rocks of the Araí Group share strong radiometric, geochemical and mineralogical ...
Yuri Ribeiro   +3 more
wiley   +1 more source

Selected Physical and Geotechnical Properties of Loess in Wairarapa Valley, New Zealand

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 69, Issue 4, December 2026.
Loess up to 10 m thick covers marine terraces, old river aggradation terraces, and gentle hill country slopes in Wairarapa, New Zealand. In the drier eastern and southern parts of Wairarapa, the loess is subject to dry summer and autumn and wet winter and spring in most years.
Alan S. Palmer
wiley   +1 more source

Permian sedimentary sequence containing analcimolite and authigenic aegirine from the Boskovice Basin (Bohemian Massif, Czechia)

open access: yesThe Depositional Record, Volume 12, Issue 5, November 2026.
The Permian freshwater lacustrine sedimentary sequence rich in analcime, with unusual authigenic aegirine and NaFe3+ clinopyroxene. Product of ashfall directly linked with fossil accumulation (Konzentrat‐Lagerstätte). Abstract The Early Permian freshwater lacustrine sedimentary sequence in the vicinity of Bačov (Czechia) is world‐famous for its rich ...
Jakub Jirásek   +3 more
wiley   +1 more source

Forming sulfate-and REE-rich fluids in the presence of quartz [PDF]

open access: yes, 2020
The presence of sulfate-rich fluids in natural magmatic hydrothermal systems and some carbonatite-related rare earth element (REE) deposits is paradoxical, because sulfate salts are known for their retrograde solubility, implying that they should be ...
Xie, Yuling   +6 more
core   +1 more source

Metabarcoding as a Tool in Characterizing Nordic Deep‐Sea and Arctic Benthic Ecosystems

open access: yesEnvironmental DNA, Volume 8, Issue 6, November‐December 2026.
Multi‐marker sediment eDNA metabarcoding robustly discriminates benthic habitats across the Nordic Seas and Arctic Mid‐Ocean Ridge. Complementary 18S rDNA and COI performance enhances taxonomic resolution and supports standardized integration of metabarcoding into future deep‐sea biodiversity surveys.
Jon Thomassen Hestetun   +4 more
wiley   +1 more source

Gadolinium as an Emerging Contaminant: Environmental Cycling, Human and Plant Interactions, and Mitigation Strategies

open access: yesRare Metals, Volume 45, Issue 11, November 2026.
ABSTRACT Gadolinium (Gd) is a rare earth element whose anthropogenic cycle has expanded rapidly, driven primarily by the widespread medical use of gadolinium‐based contrast agents (GBCAs) in magnetic resonance imaging, alongside its use in selected electronic and energy‐related technologies.
Nazenin Akin   +2 more
wiley   +1 more source

Geochemical Characteristics of Metasediment—Rich Lower Continental Crust: Insights From the Ivrea‐Verbano Zone (DIVE Drilling Project, ICDP Expedition 5071, Val d’Ossola, Italy)

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 11, November 2026.
Abstract Whole‐rock geochemical data from two drill cores obtained through the ICDP (International Continental Scientific Drilling Program) funded Drilling the Ivrea‐Verbano Zone (IVZ) (DIVE) project: 5071_1_B (Ornavasso) and 5071_1_A (Megolo), provide new insights into the composition of the lower continental crust (LCC) in the IVZ. Borehole 5071_1_B (
Alexia Secrétan   +9 more
wiley   +1 more source

A Late Cretaceous Aborted Spreading Center in the Northern Arabian Sea Recorded by the Laxmi Basin

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 11, November 2026.
Abstract The Laxmi Basin (LB), a marginal depression, is a prominent geomorphic feature in the northern Arabian Sea. Understanding how the basin formed has important implications for the India–Seychelles breakup and the evolution of the western Indian Ocean.
Sibin Sebastian, Jyotiranjan S. Ray
wiley   +1 more source

Characterization of LUSI Mud as Geopolymer Raw Material [PDF]

open access: yes, 2012
The mud of mud volcano samples were collected from an eruption site named ‘LUSI’ (Lumpur “mud” –Sidoarjo), East Java, Indonesia for characterization. Analysis showed that, the major constituents of mud are SiO2 and Al2O3 which are higher than those in ...
Mustafa Al Bakri, A. M.   +4 more
core  

Taxonomic Revision of the Globally Widespread Cryptic Rhynchomonas Morphospecies Complex

open access: yesJournal of Eukaryotic Microbiology, Volume 73, Issue 6, November/December 2026.
ABSTRACT Rhynchomonads are ubiquitously distributed, small, colorless, heterotrophic flagellates with confirmed occurrences in diverse aquatic and soil habitats. To date, Rhynchomonas nasuta (Stokes 1888) Klebs 1892 is the commonly accepted species. However, phylogenetic studies revealed considerable genetic divergence, suggesting that isolates of this
Julian Wagenhofer   +2 more
wiley   +1 more source

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