Results 71 to 80 of about 871 (186)

Detrital zircon similarities and dissimilarities between the Iberian Pyrite Belt, Ossa-Morena Zone and Meguma

Geologica Acta, 2023
Despite the so-called exotic nature of the South Portuguese Zone relatively to the other major domains of the Iberian Massif of peri-Gondwanan affinity, Devonian detrital rocks of the oldest strata in the Iberian Pyrite Belt have a remarkable ...
João Lains Amaral, Ana Rita Solà, Telmo Bento dos Santos, Martim Chichorro   +3 more
doaj  

Continental‐Hemispheric Scale Dust Events Driven by Last Glacial Alpine Ice Sheet Dynamics

Geophysical Research Letters, Volume 52, Issue 13, 16 July 2025.
Abstract Greenland ice cores demonstrate that transient last glacial cold climate events (stadials) were associated with greatly enhanced atmospheric dust loading. Detailed radiocarbon dating of loess in central Europe reveals concurrent increases in dust activity in dust‐emitting regions.
Yunus Baykal, Gábor Újvári, Thomas Stevens, Sergio Andò, Adriano Banak, Sanja Šuica, Marta Barbarano, Eduardo Garzanti   +7 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

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

Cadomian orogenic collapse in the Ibor and Alcudia anticlines of the Central Iberian Zone, Spain

, 2023
In the Central Iberian Zone, the Cadomian orogenic collapse is represented by chaotic megabreccias, olistostromes and mélange deposits reflecting a drastic change from slope-related deposits, fed by denudation of the Cadomian arc, to offshore-dominant ...
Álvaro-Blasco, José Javier, Lorenzo, S.   +1 more
core   +2 more sources

Geochronology and geochemistry of exotic blocks of Cadomian crust from the salt diapirs of SE Zagros: the Chah-Banu example

, 2020
Cadomian calc-alkaline I-type and within-plate A-type igneous rocks are widespread in the crust of Iran where they are ascribed to a convergent margin associated with the southward subduction of Prototethyan oceanic lithosphere beneath N Gondwana.
Sepidbar, Fatemeh, Sarshar, Maryam Asadi, Stern, Robert J., Sarkarinejad, Khalil, Moghadam, Hadi Shafaii, Griffin, William L., Asadi Sarshar, Maryam, O’Reilly, Sue Y., Santos, José F., Ottley, Chris J.   +9 more
core   +1 more source

Cadomian arc recycling along the northern Gondwana margin: Source-inherited composition of Miaolingian rift-related rhyolitic rocks (Ossa-Morena Zone, SW Iberia)

, 2023
Rhyolites and rhyolitic tuffs of the Freixo-Segovia ´ Volcanic-Sedimentary Complex of the Cambrian of the OssaMorena Zone (Variscan belt, SW Iberia) were analyzed for petrography, major and trace element geochemistry, Sm–Nd isotopes and U–Pb zircon ...
Fuenlabrada, Jose Manuel, El Houicha, Mohamed, Dias da Silva, Icaro, Pereira, M. Francisco, Gama, Cristina   +4 more
core   +2 more sources

Cambrian Zawidów granodiorites in the Cadomian Lusatian Massif (Central European Variscides): what do the SHRIMP zircon ages mean ?

, 2014
International audienceThe Lusatian Massif in the Central European Variscides, composed of upper Neoproterozoic (c. 570 Ma) greywacke intruded by c. 540 Ma old Cambrian granodiorites (and the somewhat younger Zawidów granodiorites), constitutes a fragment
Białek, Dawid, Kryza, Ryszard, Oberc-Dziedzic, Teresa, Pin, Christian   +3 more
core   +1 more source

Data for: Prolonged Magmatism and Growth of the Iran-Anatolia Cadomian Continental Arc Segment in Northern Gondwana

, 2020
Much of the crust of Iran and Anatolia, including their oldest exposed rocks, formed during an episode of intense convergent margin (arc) magmatism as a result of subduction of oceanic lithosphere beneath northern Gondwana from ca 620 Ma to ca 500 Ma ...
Shafaii Moghadam, H (via Mendeley Data)
core   +1 more source

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