Results 121 to 130 of about 22,802 (265)

Age and geochemical evolution of granite magmatism in Olkhon region from Caledonian syncollisional ore-free granite to the rare metal granite and pegmatite of Middle Paleozoic intraplate setting

China Geology
The detailed description of two granite complexes in the Olkhon subterrane is given. The Early Paleozoic Sharanur complex was formed by granitization of gneisses of the Olkhon series.
Viktor Antipin, Valentina Makrygina, Larisa Kushch, Nataliya Sheptyakova   +3 more
doaj   +1 more source

Hardness Toxicity and Multi‐Route, Multi‐Demographic Health Risks of Nitrate‐Contaminated Groundwater: A Call for Sustainable Environmental and Public Health Protection

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract Groundwater contamination by nitrate and hardness poses critical challenges to environmental sustainability and public health across many regions. This research pioneers an integrated assessment of nitrate multi‐route exposure for six‐age groups and hardness toxicity in Ghana.
Johnson C. Agbasi, Mahamuda Abu, Krishna Prakash Arunachalam, Abdullahi G. Usman, Sani I. Abba, Johnbosco C. Egbueri   +5 more
wiley   +1 more source

Petrophysical properties of rocks and ring morphology of the probable impact Yarva-Varaka structure (Monchegorsk ore area of the Kola Region)

Vestnik MGTU
The morphology and physical properties (density, longitudinal wave velocities, and elastic anisotropy) of rock samples collected from the surface of the J?rva-Varaka site within the boundaries of the proposed astrobleme have been studied.
Ilchenko V. L., Kaulina T. V., Nerovich L. I.   +2 more
doaj   +1 more source

Tectonics of some Amazonian greenstone belts [PDF]

Greenstone belts exposed amid gneisses, granitoid rocks, and less abundant granulites along the northern and eastern margins of the Amazonian Craton yield Trans-Amazonican metamorphic ages of 2.0-2.1 Ga.
Gibbs, A. K.
core   +1 more source

Post‐Eocene 90° CCW Rotation of Sardinia‐South Corsica: Paleomagnetic Evidence From Permian‐Cretaceous Sediments of Nurra (NW Sardinia)

Tectonics, Volume 45, Issue 5, May 2026.
Abstract The paleomagnetism of Miocene calc‐alkaline volcanics and sediments from Sardinia has firmly showed that the Corsica‐Sardinia microplate rotated 50°–60° counterclockwise (CCW) with respect to Europe between 21 and 15 Ma, during its drift from the Provencal margin. However, Permian to Eocene rocks from central‐south Sardinia revealed higher (up
Gaia Siravo, Fabio Speranza, Giacomo Oggiano, Lilla Spagnuolo   +3 more
wiley   +1 more source

Petrogenesis of extra-large flake graphite at the Bissett Creek deposit, Canada. [PDF]

Miner Depos, 2023
Drever C, Kinney C, Yakymchuk C.
europepmc   +1 more source

Metasediments of the deep crustal section of Southern Karnataka [PDF]

A review of the rocks of supracrustal origin in the amphibolite and granulite facies terrane in southern Karnataka was presented. In addition to introducing the metasediments in the field area of the workshop, a review was presented of the common ...
Devaraju, T. C., Laajoki, K., Wodeyar, B. K.   +2 more
core   +1 more source

Bayesian Inversion of Electrical Resistivity Tomography Data for Uranium Exploration Through a Localized Ensemble‐Based Approach

Geophysical Prospecting, Volume 74, Issue 4, May 2026.
ABSTRACT The electrical resistivity tomography (ERT) is a geophysical method commonly used in mining exploration to reconstruct the subsurface resistivity. The associated inverse problem is typically addressed using deterministic approaches that minimize an objective function and guarantee fast convergence.
Alessandro Vinciguerra, Guy Marquis, Jean‐François Girard   +2 more
wiley   +1 more source

Distribution of Radionuclides and Radiological Health Assessment in Seih-Sidri Area, Southwestern Sinai. [PDF]

Int J Environ Res Public Health, 2022
Alharshan GA, Kamar MS, Lasheen ESR, Ene A, Uosif MAM, Awad HA, Issa SAM, Zakaly HMH.   +7 more
europepmc   +1 more source

Forest Plants Decrease in Occupancy and Contract Their Edaphic Niches Towards Their Climatic Range Margins

Global Ecology and Biogeography, Volume 35, Issue 5, May 2026.
ABSTRACT Aim For improved predictions of the redistribution of species under climate change, there is a need to better understand how interactions among multiple abiotic drivers affect species distributions. We examined whether occupancy patterns of forest plant species change consistently along geographic and macroclimatic gradients. We further tested
Per‐Ola Hedwall, Kristoffer Hylander, Jörg Brunet, Ditte Marie Christiansen, Joan Díaz‐Calafat, Jaime Uria Diez, Martin Diekmann   +6 more
wiley   +1 more source