Results 81 to 90 of about 7,236 (215)
Depositional constraints and age of metamorphism in southern India: U-Pb chemical (EMPA) and isotopic (SIMS) ages from the Trivandrum Block [PDF]
, 2005 We report U–Pb electron microprobe (zircon and monazite) and Secondary Ion Mass Spectrometry (SIMS) U–Pb (zircon) ages from a granulite-facies metapelite and a garnet–biotite gniess from Chittikara, a classic locality within the Trivandrum Block of ...
Collins, A. +3 more
core +1 more source
Tectonics, Volume 44, Issue 7, July 2025.Abstract Relamination is closely connected to subduction zones. Despite the numerous high‐P metamorphic belts recognized on Earth, relamination remains a poorly documented process. We present a continental subduction zone where the exhuming high‐P rocks became a relaminant under the upper plate.
Rubén Díez Fernández +7 more
wiley +1 more source
Revista Técnica de la Facultad de Ingeniería, 2009 El Baúl massif (Cojedes State, Venezuela) has been studied since 1858, especially as an important target for oil companies since it is a structural high that has played an important role in the evolution of the oil bearing Barinas-Apure and Eastern ...
Patxi Viscarret +2 more
doaj
New U-Pb SHRIMP zircon ages for pre-variscan orthogneisses from Portugal and their bearing on the evolution of the Ossa-morena tectonic zone [PDF]
, 2006 New SHRIMP U-Pb zircon ages for the Portalegre and Alcáçovas orthogneisses document a complex pre-Variscan history for the Iberian basement in Portugal. The available geochemical and geochronological data for the Alcáçovas orthogneiss (ca.
Andrade, A. S. +6 more
core +3 more sources
Applied SciencesThe Ovor Bayan molybdenum deposit in Mongolia is located within the western segment of the Nukhetdavaa–Erlianhot–Dongwuzhumuqin–Aershan Mo–Pb–Zn–W–Cu–Sn–Cr–Fe metallogenic belt in the Mongolia–Daxing’anling Metallogenic Province.
Jun-Jian Li +5 more
doaj +1 more source
Ion microprobe zircon geochronology of the Uivak Gneisses: Implications for the evolution of early terrestrial crust in the North Atlantic Craton [PDF]
Ion microprobe U-Pb results for zircons from three Uivak I gneisses and one specimen of Uivak II gneiss, from the Saglek-Hebron area of Northern Labrador are reported.
Collerson, K. D.
core +1 more source
, 2015 International audienceWe discuss the evolution of Korea in the context of a relatively short-lived, tectonically induced, magmatic and metamorphic pulse that affected large portions of the crust of the peninsula's southern part during the Late Triassic ...
De Jong, Koen +2 more
core +4 more sources
Brazilian Journal of GeologyRESUMO: O Complexo Granulítico Porangatu está exposto na porção central da Província Tocantins, do Neoproterozoico, no centro do Brasil, ao longo da fronteira entre o Cinturão Brasília, a leste, e o Cinturão Araguaia, a oeste.
Paulo Sergio de Sousa Gorayeb +3 more
doaj +1 more source
New Insights Into Phanerozoic Tectonics Of South China: Part 1, Polyphase Deformation In The Jiuling And Lianyunshan Domains Of The Central Jiangnan Orogen [PDF]
, 2016 The central Jiangnan Orogen, genetically formed by the Proterozoic Yangtze-Cathaysia collision, presents as a composite structural feature in the Phanerozoic with multiple ductile and brittle fabrics whose geometries, kinematics, and ages are crucial ...
Cui, J +6 more
core +1 more source
Bulletin of the Geological Society of Denmark, 1995 Noritic dykes which are orientated north-south are early members of the Proterozoic dyke swarms which cut the Archaean craton of West Greenland. A diffuse-margined felsic patch within a >100 m wide dyke at Isukasia is interpreted to have crystallised at the same time as the rest of the dyke.
Allen P. Nutman +2 more
openaire +1 more source