Results 41 to 50 of about 242 (121)

Rupture and Relamination of Continental Lithosphere in a Subduction System (Variscan Orogeny, SW Iberia)

Tectonics, Volume 44, Issue 7, July 2025.
Abstract Relamination is closely connected to subduction zones. Despite the numerous high‐P metamorphic belts recognized on Earth, relamination remains a poorly documented process. We present a continental subduction zone where the exhuming high‐P rocks became a relaminant under the upper plate.
Rubén Díez Fernández, Diana Moreno‐Martín, Alejandro Díez Montes, Esther Rojo‐Pérez, Irene Novo‐Fernández, Luis Miguel Martín Parra, Jerónimo Matas, Francisco J. Rubio Pascual   +7 more
wiley   +1 more source

~ 610 Ma: a critical age for the Iberian consolidation [PDF]

, 2021
AIMS OF THE MEETING: The scientific sessions will be focused on the Pan-African and Cadomian Orogenies recorded in North Africa and western Europe across the Ediacaran Cambrian transition and its bearing in the assembly and demise of Pannotia ...
Crispim, Lourenço, Solá, A. Rita, Chichorro, Martim   +2 more
core  

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  

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

Cuartel Ophiolite: Structure, timing and exhumation mechanisms for a Cadomian suture zone in the peri-Gondwanan Realm (SW Iberia) Author links open overlay panel

The Cadomian Orogeny formed as an accretionary orogen surrounding Gondwana. The structure resulting from the Cadomian Orogeny is pervasively reworked during the Paleozoic, within the frame of the Variscan Cycle.
Díez Fernández, Rubén, Rojo Pérez, Esther, Moreno Martín, Diana, Sánchez Martínez, Sonia, Gerdes, Axel, Arenas Martín, Ricardo, Albert Roper, Richard   +6 more
core   +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

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

From Pan-African transpression to Cadomian transtension at the West African margin: New U-Pb zircon ages from the Eastern Saghro inlier (Anti-Atlas, Morocco)

, 2021
International audienceNew U–Pb zircon ages from the Eastern Saghro massif in the Anti-Atlas of Morocco demonstrate alink between Pan-African transpressive collision at c.
El Kabouri, Jamal, Ennih, Nasser, Linnemann, Ulf, Gärtner, Andreas, Gärtner, Jessica, Hofmann, Mandy, Zieger, Johannes, Errami, Ezzoura, Gasquet, Dominique, Mende, Katja   +9 more
core   +1 more source

Biogenicity of amorphous organic matter and bacteriomorph acritarchs preserved in wrinkle structures from the Ediacaran Cíjara Formation, Spain

The Depositional Record, Volume 10, Issue 1, Page 51-69, February 2024.
Ediacaran wrinkle structures containing well‐preserved bacteriomorph acritarchs from a Cadomian retroarc basin fringing West Gondwana are investigated. Microbial remains represent cyanobacterial bloom‐forming Bavlinella acritarchs, which characterise eutrophic episodes.
J. Javier Álvaro, José E. Ortiz, Carlos Neto de Carvalho, Ignacio López‐Cilla, Yolanda Sánchez‐Palencia, Trinidad Torres   +5 more
wiley   +1 more source