Results 31 to 40 of about 165,337 (293)

Petrogenesis and tectonic-magmatic context of emplacement of lepidolite and petalite pegmatites from the Fregeneda-Almendra field (Variscan Central Iberian Zone): clues from Nb-Ta-Sn oxide U-Pb geochronology and mineral geochemistry

BSGF - Earth Sciences Bulletin, 2023
The Fregeneda-Almendra pegmatite field of the Iberian Massif represents a typical expression of peraluminous rare-metal magmatism that occurred over western Europe at the end of the Variscan orogeny.
C. Ballouard, Patrick A. Carr, Flore Parisot, E. Gloaguen, J. Melleton, J. Cauzid, A. Lecomte, O. Rouer, L. Salsi, J. Mercadier   +9 more
semanticscholar   +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]

, 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 ...
Ellam, R.M., Ugidos, J. M., Stephens, W. E., Carnicero, A., Stephens, W.E., Ellam, R. M., Ugidos, J.M.   +6 more
core   +1 more source

The Atlas-Meseta Red Beds basin (Morocco) and the Lower Ordovician rifting of NW-Gondwana [PDF]

BSGF - Earth Sciences Bulletin, 2016
The transition from the Cambrian to Ordovician in Morocco is known to be characterized by a frequent Furongian hiatus, restricted extension of the Tremadocian marine deposits, and frequent unconformities at the base of the transgressive upper Floian ...
Ouanaimi Hassan, Soulaimani Abderrahmane, Hoepffner Christian, Michard André, Baidder Lahssen   +4 more
doaj   +1 more source

U-Pb dating of Ordovician felsic volcanism in the Schistose Domain of the Galicia-Trás-os-Montes Zone near Cabo Ortegal (NW Spain)

Geologica Acta, 2005
The northern termination of the Schistose Domain of the Galicia-Trás-os-Montes Zone is a tectonic slice named the Rio Baio Thrust Sheet, which is sandwiched between the Cabo Ortegal Complex and the Ollo de Sapo Domain of the Central-Iberian Zone. The Rio
Pablo Valverde-Vaquero, A. Marcos, P. Farias, G. Gallastegui   +3 more
doaj   +1 more source

Passive imaging of collisional orogens: a review of a decade of geophysical studies in the Pyrénées

BSGF - Earth Sciences Bulletin, 2022
This contribution reviews the challenges of imaging collisional orogens, focusing on the example of the Pyrenean domain. Indeed, important progresses have been accomplished regarding our understanding of the architecture of this mountain range over the ...
Chevrot Sébastien, Sylvander Matthieu, Villaseñor Antonio, Díaz Jordi, Stehly Laurent, Boué Pierre, Monteiller Vadim, Martin Roland, Lehujeur Maximilien, Beller Stephen, Brives Jacques, Bitri Adnand, Calassou Sylvain, Collin Magali, Ford Mary, Jolivet Laurent, Manatschal Gianreto, Masini Emmanuel, Mouthereau Frédéric, Vidal Olivier   +19 more
doaj   +1 more source

Daedalus Mega-ichnosites: The Armorican Quartzite Bridge between Villuercas-Ibores-Jara and Naturtejo UNESCO Global Geoparks [PDF]

Geoconservation Research, 2021
The Early Paleozoic oceans were generally characterized by short trophic chains and simple ecological tiering dominated by suspension-feeding organisms.
Carlos Neto de Carvalho, Andrea Baucon, Ivan Cortijo, Soren Jensen, Jose Maria Barrera, Javier Lopez Caballero   +5 more
doaj   +1 more source

Terreneuvian skeletonized microfossils from the Central Iberian Zone (Spain) and correlation of the Fortunian Stage throughout southwestern Europe

, 2023
2023 Acuerdos transformativos CRUEDuring the Ediacaran–Cambrian boundary interval, the Iberian margin of West Gondwana recorded oceanic upwelling and phosphogenesis favouring the preservation of originally phosphatic and diagenetically phosphatized ...
Devaere, Léa, Javier Álvaro, José, Warren, Lucas V. [UNESP], Warren, Lucas V., Lorenzo, Saturnino, Javier Álvaro, J.   +5 more
core   +1 more source

Polyphased rare-element magmatism during late orogenic evolution: geochronological constraints from NW Variscan Iberia

BSGF - Earth Sciences Bulletin, 2022
Rare-element granites and pegmatites represent important sources of raw materials for “clean, green and high technologies”, such as lithium and tantalum, for example.
Melleton Jérémie, Gloaguen Eric, Frei Dirk, Lima Alexandre, Vieira Romeu, Martins Tania   +5 more
doaj   +1 more source

The Role of Geographical Area and Entrepreneurs' Personality

Frontiers in Psychology, 2021
This study proposed a line of research on entrepreneurship based on the analysis of personality traits and geographical area. Its objective is to identify whether certain personality traits or sociocultural variables typical of a particular geographical ...
Amaia Yurrebaso, Eva María Picado, Teresa Paiva   +2 more
doaj   +1 more source

The Ant-like Tachydromia Complex in the Iberian Peninsula—Insights from Habitat Suitability Modelling for the Conservation of an Endemism (Diptera: Hybotidae)

Insects, 2021
Ant-like flies comprise nine Iberian endemic species of flightless Tachydromia. Severe knowledge gaps on distribution and ecological requirements hinder conservation assessments.
Ana Rita Gonçalves, Carlos Vila-Viçosa, João Gonçalves   +2 more
doaj   +1 more source