Results 51 to 60 of about 110 (106)

Late Cambrian magmatic arc activity in peri-Gondwana: geochemical evidence from the Basal Allochthonous Units of NW Iberia

Geologica Acta, 2017
The North African section of the Gondwana margin was the site of voluminous, arc-related magmatism during the Late Neoproterozoic (Avalonian–Cadomian orogen).
P. ANDONAEGUI, J. ABATI, R. DÍEZ FERNÁNDEZ   +2 more
doaj  

Garnet as a Proxy for Deciphering Polymetamorphic Histories: An Example From the Sanandaj‐Sirjan Zone of Iran

Geological Journal, Volume 60, Issue 4, Page 793-806, April 2025.
This work documents how the texture and composition of metamorphic garnet represent a valuable petrological archive capable of deciphering complex thermobaric histories. ABSTRACT In the central sector of the Sanandaj‐Sirjan zone of Iran, the Triassic‐to‐Jurassic ‘Hamedan Phyllites’ metamorphic complex shows a polymetamorphic evolution characterised by ...
Mirmohammad Miri, Federico Lucci, Ali A. Sepahi, Mohammad Maanijou, John Charles White   +4 more
wiley   +1 more source

Exploitation of Mining Resources in El Argar Culture: Bronze Age Metallurgy in the Hinterland of the Western Betic Cordillera (Southeastern Iberian Peninsula)

Geoarchaeology, Volume 40, Issue 1, January/February 2025.
ABSTRACT This research addresses the territorial organisation of metallurgical production during the El Argar Bronze Age (2200–1550 cal bc) in the inner areas of El Argar territory through lead‐isotope and trace element analyses of geological copper ores, archaeometallurgical remains and copper‐based artefacts.
M. Murillo‐Barroso, G. Aranda Jiménez, J. A. Lozano Rodríguez, A. Lackinger, Z. Stos‐Gale, J. Rodríguez, A. M. Álvarez‐Valero, J. I. Gil Ibarguchi, I. Montero‐Ruiz   +8 more
wiley   +1 more source

Exploitation of geothermal energy for the production of electric energy and warm for the town agglomeration of Litoměřice [PDF]

Acta Montanistica Slovaca, 2007
The Municipality of Litoměřice is very actively engaged in actions for an improvement of environmental conditions in the town as well as in its surroundings.The most appropriate solution seems to be the exploitation of geothermal energy using a HDR ...
Vlastimil Myslil, Václav Frydrych
doaj  

Pressure–Temperature–Time Evolution of a Polymetamorphic Paragneiss With Pseudomorphs After Jadeite From the HP–UHP Gneiss‐Eclogite Unit of the Variscan Erzgebirge Crystalline Complex, Germany

Journal of Metamorphic Geology, Volume 42, Issue 9, Page 1159-1178, December 2024.
ABSTRACT A quartz‐rich paragneiss from the Variscan Erzgebirge Crystalline Complex (ECC) was studied in detail because of abundant millimetre‐sized and clearly oriented pseudomorphs after a sodic mineral interpreted to have been jadeite. This mineral, or pseudomorphs after it, is rarely found in extensive high‐pressure (HP)–ultrahigh‐pressure (UHP ...
Hans‐Joachim Massonne
wiley   +1 more source

Sun, Sea and Sand; Cretaceous Source to Sink Systems of Senegal, NW Africa

Basin Research, Volume 36, Issue 6, November–December 2024.
Source to sink exhumation models for the Senegalese Basin throughout the Cretaceous, combining Cretaceous vegetation, climate evolution, hinterland uplift, exhumation and paleo‐drainage evolution. Figure not to scale in order to emphasise the lateral unroofing of the Hercynian age Mauritanide Belt, eroding through the Gaouâ and Gadel group source rocks.
M. Pearson, M. Casson, V. Pashley, J. Redfern   +3 more
wiley   +1 more source

New U-Pb SHRIMP zircon ages for pre-variscan orthogneisses from Portugal and their bearing on the evolution of the Ossa-Morena tectonic zone

Anais da Academia Brasileira de Ciências, 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.
Cordani Umberto G., Nutman Allen P., Andrade Antonio S., Santos José F., Azevedo Maria do Rosário, Mendes Maria Helena, Pinto Manuel S.   +6 more
doaj  

The Brasiliano collage in South America: a review

Brazilian Journal of Geology
Analysis of recent geological and geochronological data from the basement of the South American platform indicates that the Brasiliano orogenic collage took place in four distinct pulses: a) Early Cryogenian (ca.
Benjamim Bley de Brito Neves, Reinhardt Adolfo Fuck, Marcio Martins Pimentel   +2 more
doaj   +1 more source

Shifts in the Ediacaran to Lower Ordovician sedimentary zircon provenances of Northwest Gondwana: the Pyrenean files

Geologica Acta, 2023
Detrital zircon grains from Cambrian–Lower Ordovician sandstones and quartzites sampled in the Pyrenees were dated by LA-ICPMS in order to assess their provenance sources.
Maxime Padel, Sebastien Clausen, Marc Poujol, J. Javier Álvaro   +3 more
doaj  

Non-coaxial deformation of foreland basement involved in a fold-and-thrust belt: a strain partitioning approach to the Eastern Variscan orogen. [PDF]

Sci Rep, 2023
Mareček L, Melichar R, Černý J, Schnabl P, Hrdličková K, Buriánek D.   +5 more
europepmc   +1 more source