Results 31 to 40 of about 3,139 (203)

Insights from the Alabama Hills into Mesozoic Magmatism and Tectonics in Eastern California

open access: yesLithosphere, 2022
New zircon U-Pb ages for the Alabama Hills Granite in Owens Valley, eastern California, range from 103 to 102 Ma, nearly 20 Ma older than previously published zircon ages.
Ryan E. Frazer   +3 more
doaj   +1 more source

Evolution of a Paleoproterozoic “weak type” orogeny in the West African Craton (Ivory Coast). [PDF]

open access: yes, 2009
International audienceThe Paleoproterozoic domain of Ivory Coast lies in the central part of the West African Craton (WAC) and is mainly constituted by TTG, greenstones, supracrustal rocks and leucogranites.
Cagnard, Florence   +5 more
core   +3 more sources

Infiltration of meteoric water in the South Tibetan Detachment (Mount Everest, Himalaya): When and why? [PDF]

open access: yes, 2017
Publisher's version/PDF must be used in Institutional Repository 6 months after ...
Chi‐Hsiang Y.   +10 more
core   +2 more sources

Mise en solution et précipitation de l'uranium et du thorium dans les conditions de moyenne et haute température (résumé) Solution and Precipitation of Uranium and Thorium under Average and High-Temperature (Summary)

open access: yesOil & Gas Science and Technology, 2006
Les études tant analytiques qu'expérimentales réalisées au cours des vingt dernières années ont bien montré le rôle joué par les complexes d'uranylcarbonates dans le transport de l'uranium en milieu hydrothermal oxydant ou faiblement réducteur.
Moreau M., Poty P.
doaj   +1 more source

U-Pb AGE AND GEOCHEMICAL TYPIFICATION OF THE SARAM MASSIF ROCKS (WESTERN TRANSBAIKALIA): EARLY JURASSIC GRANITOID MAGMATISM

open access: yesГеодинамика и тектонофизика
The paper presents data on the geological position, age and features of the material composition of the Saram massif granitoids, located in the northwestern part of the Malkhan ridge of Western Transbaikalia.
A. L. Elbaev   +4 more
doaj   +1 more source

A reactive assimilation model for regional-scale cordierite-bearing granitoids: geochemical evidence from the Late Variscan granites of the Central Iberian Zone, Spain [PDF]

open access: yes, 2008
Regional scale biotite and cordierite-bearing granites (s.l.) in the Variscan of the Central Iberian Zone (CIZ) are spatially closely associated with cordierite-rich nebulites and cordierite-bearing two-mica granites, and with cordierite-rich high grade ...
Carnicero, A.   +3 more
core   +1 more source

Late Jurassic Leucogranites of Macau (SE China): A Record of Crustal Recycling During the Early Yanshanian Orogeny

open access: yesFrontiers in Earth Science, 2020
The Yanshanian Orogeny consists of Jurassic to Cretaceous compressional-extensional cycles related to the subduction of the Paleo-Pacific Ocean beneath East Asia. Numerous granitic plutons were emplaced across southeast China at distinct intervals over a
J. Gregory Shellnutt   +3 more
doaj   +1 more source

The 3.5 Ga Siurua trondhjemite gneiss in the Archaean Pudasjärvi Granulite Belt, northern Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2003
In the Archaean Pudasjärvi Complex the pyroxene-bearing rocks are considered to form a belt, the Pudasjärvi Granulite Belt (PGB). The major rock types of the PGB are meta-igneous mafic and felsic granulites, and trondhjemite gneisses Red alaskites, white
T. Mutanen, H. Huhma
doaj   +1 more source

Syntectonic crustal melting and high-grade metamorphism in a transpressional regime, Variscan Massif Central, France [PDF]

open access: yes, 2009
Hot collisional orogens are characterized by abundant syn-kinematic granitic magmatism that profoundly affects their tectono-thermal evolutions. Voluminous granitic magmas, emplaced between 360 and 270 Ma, played a visibly important role in the evolution
Brunel, M, Gébelin, A, Roger, F
core   +3 more sources

Potential of Soils Natural Sorbents for Environmental Decontamination From 137Cs

open access: yesLand Degradation &Development, Volume 37, Issue 2, Page 779-789, 30 January 2026.
ABSTRACT This study addresses the existing research gap concerning the lack of integrated data on the role of in situ soil components in the long‐term fixation of 137Cs under natural, protected, and non‐agricultural conditions. The contamination of ecosystems by radioactive isotopes, particularly 137Cs, represents a considerable environmental hazard ...
Katarzyna Szarłowicz   +3 more
wiley   +1 more source

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