Results 11 to 20 of about 110 (106)

First report of an Ediacarian basement in the Western Alps: the Serre Chevalier crystalline unit (Briançonnais domain, France)

BSGF - Earth Sciences Bulletin, 2023
We report new LA-ICP-MS U-Pb zircon ages of varied crystalline rocks occurring in the Serre Chevalier crystalline terrain, an allochtonous basement unit located at the top of the Briançonnais nappes stack ∼5 km west of Briançon city.
Thiéblemont Denis, Jacob Jean-Baptiste, Lach Philippe, Guerrot Catherine, Leguérinel Mathieu   +4 more
doaj   +1 more source

Geochronology and Lu-Hf isotope of mafic-intermediate rocks from SW Salmas: implication for Neoproterozoic juvenile melts [PDF]

پترولوژی, 2018
The southwest Salmas metamorphosed mafic-intermediate intrusive rocks are located in Sanandaj-Sirjan zone in NW of Iran. The metamorphosed intrusives rocks comprise metagabbro and metadiorite that intruded the Precambrian metamorphosed volcanic ...
Fahime kozekoulani, Mohammad Rahgoshay, Hadi Shafaii Moghadam   +2 more
doaj   +1 more source

Poly-Orogenic Melting of Metasedimentary Crust From a Granite Geochemistry and Inherited Zircon Perspective (Southern Calabria-Peloritani Orogen, Italy)

Frontiers in Earth Science, 2019
Inherited zircon ages and geochemical features of late Cadomian and late Variscan granitoids from the north-eastern Peloritani Mountains (NE Sicily) and the western Aspromonte Massif (SW Calabria) shed new light on the sources and processes involved in ...
Patrizia Fiannacca, Ian S. Williams, Rosolino Cirrincione, Antonino Pezzino   +3 more
doaj   +1 more source

Ordovician graptolites from the basal part of the Palaeozoic transgressive sequence in the Karadere area, Zonguldak Terrane, NW Turkey [PDF]

Estonian Journal of Earth Sciences, 2014
The Karadere area to the east of Safranbolu in NW Anatolia is one of the very few localities in Turkey where the contact between the Cadomian basement and the Lower Palaeozoic transgressive succession is well exposed.
M. Cemal Göncüoglu, Valeri Sachanski, Juan Carlos Gutiérrez-Marco, Cengiz Okuyucu   +3 more
doaj   +1 more source

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

Geologica Acta, 2022
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 resemblance
João Lains Amaral, Ana Rita Solá, Telmo M. Bento dos Santos, Martim Chichorro   +3 more
doaj   +1 more source

Transversely isotropic lower crust of Variscan central Europe imaged by ambient noise tomography of the Bohemian Massif [PDF]

Solid Earth, 2021
The recent development of ambient noise tomography, in combination with the increasing number of permanent seismic stations and dense networks of temporary stations operated during passive seismic experiments, provides a unique opportunity to build the ...
J. Kvapil, J. Plomerová, H. Kampfová Exnerová, V. Babuška, G. Hetényi   +4 more
doaj   +1 more source

ON PALEOTECTONIC BELONGING OF THE SUVANYAK METAMORPHIC COMPLEX (SOUTHERN URALS) FROM THE U-Th-Pb DATING OF DETRITAL ZIRCON GRAINS

Геодинамика и тектонофизика, 2023
U-Th-Pb isotope dating of grains of detrital zircon from quartzites of the Suvanyak metamorphic complex, which forms the Suvanyak tectonic unit that forms the western part of the Uraltau uplift, located in the east of the West Ural megazone in the ...
B. G. Golionko, N. B. Kuznetsov, A. V. Strashko, T. V. Romanyuk, A. S. Novikova, A. S. Dubensky, V. S. Sheshukov, K. G. Erofeeva   +7 more
doaj   +1 more source

Cadomian metabasites of the Eastern Pyrenees revisited

Geologica Acta, 2023
This study presents a new geochemical, petrological, and geochronological U-Pb dataset from Ediacaran metabasites and associated rocks of the Canigó and Cap de Creus massifs, Eastern Pyrenees. Metabasites are composed of calcic amphibole + plagioclase +
Núria Pujol-Solà, Josep Maria Casas, Joaquín A. Proenza, Idael F. Blanco-Quintero, Elena Druguet, Montserrat Liesa, Manuel J. Román-Alpiste, J. Javier Álvaro   +7 more
doaj  

Cadomian/Pan-African consolidation of the Iberian Massif assessed by its detrital and inherited zircon populations: is the ~610Ma age peak a persistent Cadomian magmatic inheritance or the key to unravel its Pan-African basement?

Geologica Acta, 2023
This work assessed the age distribution of Cadomian/Pan-African orogenic events (550-590 and 605-790Ma, respectively) in several zones of Iberian Massif by means of detrital and inherited zircon analysis compilation.
Martim Chichorro, Ana Rita Solà, Telmo Bento dos Santos, João Lains Amaral, Lourenço Crispim   +4 more
doaj  

The role of the pre-Alpine polycrystalline basement in the paleogeographic configuration of multiple Neotethyan oceanic basins

Geologija, 2021
The study provides a deeper understanding of the early Mesozoic paleogeogeographic spatial-temporal relationship by studying the two Adria-Europe intervening basement blocks.
Darko SPAHIĆ, Tivadar GAUDENYI
doaj   +1 more source