Results 61 to 70 of about 6,109 (226)

Peralkaline and alkaline magmatism of the Ossa-Morena Zone (SW Iberia): age, source and implications for the Paleozoic evolution of Gondwanan lithosphere [PDF]

, 2014
The Ossa-Morena zone in SW Iberia represents a section of the northern margin of West Gondwana that formed part of a Cordilleran-type orogenic system during the Neoproterozoic (Cadomian orogeny).
Diez-Fernandez, Ruben, Foster, David, Pereira, M. Francisco   +2 more
core   +2 more sources

Dating C/S Structures in Syntectonic Granites by In Situ Rb‐Sr Analyses on Muscovite

Terra Nova, Volume 38, Issue 2, Page 124-129, April 2026.
ABSTRACT The interplay of crystallisation, deformation and fluid–rock interactions makes deciphering geochronological information complex in syntectonic granites. In this study, we apply in situ Rb‐Sr analyses to selected samples from the Questembert Variscan syntectonic granite in Western France, which was emplaced along the South Armorican Shear Zone
Philippe Boulvais, Romain Tartèse
wiley   +1 more source

VARNET-96: influence of the Variscan and Caledonian orogenies on crustal structure in SW Ireland [PDF]

Geophysical Journal International, 2000
SUMMARY VARNET, an international multidisciplinary project, was designed to examine the ‘Variscan Front’ in the southwest of Ireland. As part of the seismic experiment a 200 km long wide-angle seismic pro¢le (Line A) was recorded from the Old Head of Kinsale in the south of Ireland to Galway Bay on the west coast.
Landes, M., Prodehl, C., Hauser, F., Jacob, A., Vermeulen, N.   +4 more
openaire   +3 more sources

40Ar/39Ar phlogopite geochronology of lamprophyre dykes in Cornwall, UK: new age constraints on Early Permian post-collisional magmatism in the Rhenohercynian Zone, SW England [PDF]

, 2015
Journal of the Geological Society (2015), http://jgs.lyellcollection.org/content/early/2015/06/03/jgs2014-151. Copyright © Geological Society of London 2015The spatial and temporal association of post-collisional granites and lamprophyre dykes is a ...
Archibald, Doug A., Braid, James A., Dupuis, Nicolle E., Murphy, J. Brendan, Nance, R. Damian, Shail, RK   +5 more
core   +1 more source

Late Carboniferous Geomagnetic Field Events Recorded in Post‐Collisional Altenberg–Teplice Caldera, Variscan Belt

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract Characteristic remanent magnetizations isolated from the late Variscan Altenberg–Teplice Caldera exhibit paleomagnetic directions, ranging from those consistent with the expected primary Late Carboniferous geomagnetic field to intermediate directions that significantly diverge from the dipole states.
P. Vitouš, M. S. Petronis, M. S. Foucher, F. Tomek   +3 more
wiley   +1 more source

Seismicity and Seismotectonics in the Cantabrian‐Pyrenean Zone (N Spain) Using a Dense Temporary Network of Broadband Seismic Stations

Tectonics, Volume 45, Issue 3, March 2026.
Abstract Earthquakes in intraplate regions are often scattered and difficult to associate with specific geological structures, requiring detailed surveys to identify active faults. Improving knowledge of local seismicity in these areas is essential for accurate seismic hazard assessment and for safe planning of economic activities that could affect ...
A. Olivar‐Castaño, A. Díaz‐González, J. A. Pulgar, D. Pedreira, J. M. González‐Cortina, J. Gallastegui, J. Díaz, J. Gallart   +7 more
wiley   +1 more source

Physicochemical Conditions of the Devonian-Jurassic Continental Deep Biosphere Tracked by Carbonate Clumped Isotope Temperatures of Granite-Hosted Carbonate Veins

Geofluids, 2023
Previous studies have shown that microorganisms thrive in oligotrophic fracture systems, and metabolisms include consumption and production of methane. In the Laxemar, Götemar, and Forsmark areas of Sweden, ancient microbial activity has previously been ...
Adhipa Herlambang, Cédric M. John, Henrik Drake   +2 more
doaj   +1 more source

Unravelling the 800‐million‐year geological history of the Nevis and Mamore ranges, Fort William, Scotland

Geology Today, Volume 42, Issue 2, Page 97-111, March/April 2026.
The Nevis and Mamore ranges near Fort William comprise some of the most popular and spectacular of all Scotland's mountains including the highest peak, Ben Nevis. The beauty of this mountainous region is the product of a long and complex geological evolution, spanning 800 million years of Earth's history.
James S.K. Barnet
wiley   +1 more source

Deciphering orogeny: a metamorphic perspective. Examples from European Alpine and Variscan belts

Bulletin de la Société Géologique de France, 2014
AbstractIn this paper we review and discuss, in a synthetic historical way, the main results obtained on Alpine metamorphism in the western Alps. First, we describe the finite metamorphic architecture of the western Alps and discuss its relationships with subduction and collision processes.
openaire   +1 more source

Lithotectonic units of the Cabeço de Vide Massif (Ossa-Morena Zone, SW Iberian Massif): a bedrock map to decipher superimposed orogenies

Journal of Maps
This study provides a new cartographic framework for a geologically complex region in the SW Iberian Massif (central-east Portugal). We have redefined lithological ensembles and clarified structural relationships between rock types (unconformities and ...
Diana Moreno-Martín, Rubén Díez Fernández, Luis González Menéndez, Esther Rojo-Pérez, Manuel Francisco Pereira, Ricardo Arenas   +5 more
doaj   +1 more source