Results 81 to 90 of about 871 (186)

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  

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

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

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  

From onset of Cadomian subduction to forearc-arc-continent collision: Insights from the Neoproterozoic Calzadilla Metaophiolite (SW Iberia)

The Cadomian basement of SW Iberian Massif appears in the so-called Ossa-Morena Complex, which contains several allochthonous terranes that are key for deciphering the evolution of the Gondwana margin during the Neoproterozoic.
Díez Fernández, Rubén, Pujol Solà, Núria, Cambeses, A., Garcia Casco, Antonio, Rojo Pérez, Esther, Iglesias Ruiz, Gabriel, Proenza Fernández, Joaquin Antonio, Arenas Martín, Ricardo, Sánchez Martínez, Sonia, Novo Fernández, Irene   +9 more
core   +1 more source

Facies distribution and depositional cycles in lacustrine and palustrine carbonates: The Lutetian–Aquitanian record in the Paris Basin

The Depositional Record, Volume 10, Issue 1, Page 124-158, February 2024.
In this work focussing on the Cenozoic continental carbonates of the Paris Basin, new information is brought to light on the spatialisation of continental carbonates facies thanks to correlations between coastal and palustrine environments. It presents arguments for distinguishing between marine (lagoon‐type) and continental (lake‐type) deposits based ...
Kévin Moreau, Simon Andrieu, Justine Briais, Benjamin Brigaud, Magali Ader   +4 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  

Chronology of Cadomian tectonothermal activity in the baie de Saint-Brieuc (north Brittany), France: evidence from ⁴⁰Ar/³⁹Ar mineral ages

, 1991
The late Precambrian Cadomian Orogen exposed in the North Armorican Massif (northwest France) is a collage of displaced terranes that, in part, developed during amalgamation of continental-arc and marginal-basin complexes.
R. S. D'Lemos, R. D. Dallmeyer, R. A. Strachan   +2 more
core   +1 more source

Zircon U‐Pb‐He Double Dating of Modern Sands From the Inn River Catchment: Assessing Resolution and Potential in a Complex Orogenic Setting

Journal of Geophysical Research: Earth Surface, Volume 129, Issue 1, January 2024.
Abstract Zircon U‐Pb‐He double dating (ZDD) provides the opportunity to derive high temperature crystallization ages and low temperature cooling ages from the very same mineral grain, making it especially attractive for zircon provenance studies. We present the combination of in situ detrital zircon U‐Pb‐He double dating and Raman spectroscopy‐based ...
I. Dunkl, F. Malis, N. K. Lünsdorf, J. Schönig, H. von Eynatten   +4 more
wiley   +1 more source