Results 61 to 70 of about 4,105 (193)

Deep Sources of Recent Volcanism in Armenia Inferred From Ambient Noise Tomography

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract We perform Rayleigh wave ambient noise tomography to investigate crustal seismic velocity structure and sources of volcanism in Armenia. Armenia, a key part of the tectonically and volcanically active Caucasus‐Anatolia region, is actively being deformed by the ongoing Arabian‐Eurasian continental collision.
Kh. Meliksetian, L. Sargsyan, I. Koulakov, N. Toghramadjian, N. Belovezhets, Y. Berezhnev, G. Navasardyan, E. Grigoryan, A. Vasilevsky, E. Sahakyan   +9 more
wiley   +1 more source

Geochemical characteristics of the barite occurrences in the Paleozoic complex of the Southeastern Bosnia and their relationship to the barite deposits of the Mid-Bosnian Schist Mountains

Geologia Croatica, 2010
In Paleozoic rocks of Southeastern Bosnia (SEB) there are numerous, but very small vein and replacement barite ore deposits containing up to 10% Pb-Zn-Fe-Cu sulphides.
Ivan Jurković, Vesnica Garašić, Hazim Hrvatović   +2 more
doaj   +1 more source

The Late-Variscan magmatism of the Catalan Pyrenees. A unique opportunity the observe the plutonic-volcanic connection

, 2019
27th IUGG General Assembly 2019 in Montreal, Canadá, 8-18 july 2019 The volcanic-plutonic connection has been postulated mostly based on geochemical, petrological, and geophysical approaches, and theoretical modelling, all them providing indirect evidence, but for now very few direct field examples of such connection have been offered.
Martí Molist, Joan, Cires, J., Sosa-Ceballos, G., Geyer, Adelina, Andújar, Juan, Scaillet, Bruno, Stéphan, S.   +6 more
openaire   +2 more sources

Bimodal magmatism as a consequence of the post-collisional readjustment of the thickened Variscan continental lithosphere (Aiguilles Rouges-Mont Blanc Massifs, Western Alps) [PDF]

, 2017
: High Precision U-Pb zircon and monazite dating in the Aiguilles Rouges-Mont Blanc area allowed discrimination of three short-lived bimodal magmatic pulses: the early 332 Ma Mg-K Pormenaz monzonite and associated 331 Ma peraluminous Montées Pélissier ...
Bussy, François, Hernandez, Jean, Von Raumer, Jürgen   +2 more
core  

Tourmaline 40Ar/39Ar chronology of tourmaline-rich rocks from Central Iberia dates the main Variscan deformation phases [PDF]

, 2009
During crustal thickening, metapelites taken to depth release boron-bearing hydrothermal fluids because of progressive heating and dehydration. These fluids swiftly percolate upwards, especially if the crust is being actively deformed, to form tourmaline
Bea, F., Gil-Crespo, P. P., Montero, P., Pesquera, A., Torres-Ruiz, J.   +4 more
core   +7 more sources

Anatomy of Rift‐Segmenting Transfer Zones: New Insights From the 3D Integrated Interpretation of the Southeastern Sector of the Basque‐Cantabrian Basin and the Pamplona Fault (Pyrenees, N Spain)

Basin Research, Volume 38, Issue 1, January–February 2026.
An updated view of the southern part of the Cantabrian‐Pyrenean junction through a 3D geological model shows the first conclusive evidence for the ~65 km‐wide diffuse Pamplona transfer zone linking the Basque‐Cantabrian and Mauleon segments of the Pyrenean rift. This transfer zone also affected the style of deformation and configuration of the Pyrenean
Cristina Bravo, Juan C. Larrasoaña, Juan I. Baceta   +2 more
wiley   +1 more source

Confronting Episodic vs. Continuous Heat Sources in Long‐Lived Hot Orogens: Insights From Petrochronological Studies in the Nova Venecia Complex, Araçuaí Orogen (SE Brazil)

Journal of Metamorphic Geology, Volume 43, Issue 9, Page 863-890, December 2025.
ABSTRACT Orogenic belts that sustain elevated temperatures at intermediate crustal depths for tens of millions of years are known as hot orogens. The evolution of these hot orogens is largely influenced by thermal maturation, primarily driven by the distribution of heat‐producing elements (HPEs), such as K, Th and U in the overthickened crust.
Lucas R. Schiavetti, Vinicius T. Meira, Sean Mulcahy, Jeffrey D. Vervoort, Peter L. Baker, George L. Luvizotto, Ricardo I. F. Trindade   +6 more
wiley   +1 more source

Can Multiphase Inclusions in Garnet From Eclogite Facies Rocks Be a Product of Melt or Supercritical Fluid Entrapment During Subduction?

Journal of Metamorphic Geology, Volume 43, Issue 9, Page 891-908, December 2025.
ABSTRACT Dehydration of rocks and minerals during high‐pressure metamorphism is controlled by the thermal structure of the subduction zone and can be traced by the stability fields of hydrous phases. Consistent with the results of experimental works, the content of silicate components in fluids is assumed to increase from the fields of subcritical to ...
Shah Wali Faryad
wiley   +1 more source

BAKOVIĆI THE BIGEST GOLD DEPOSIT OF BOSNIA AND HERZEGOVINA

Rudarsko-geološko-naftni Zbornik, 1995
Tectonic setting, para genesis, structure and texture of ores, sulphide sulphur isotopic composition allign the Bakovići veiny deposit in the group of polymetallic, postmagmatic hydrothermal deposits in the Mid-Bosnian Schist Mountains area. Crude ore is
Ivan Jurković
doaj  

Late Ordovician (post–Sardic) rifting branches in the North Gondwanan Montagne Noire and Mouthoumet massifs of southern France [PDF]

, 2015
Upper Ordovician–Lower Devonian rocks of the Cabrières klippes (southern Montagne Noire) and the Mouthoumet massif in southern France rest paraconformably or with angular discordance on Cambrian–Lower Ordovician strata.
Colmenar, Jorge, Monceret, Eric, Pouclet, André, Vizcaïno, Daniel, Álvaro-Blasco, José Javier   +4 more
core   +1 more source