Results 31 to 40 of about 275,631 (233)
Unraveling the origins and P-T-t evolution of the allochthonous Sobrado unit (Órdenes Complex, NW Spain) using combined U–Pb titanite, monazite and zircon geochronology and rare-earth element (REE) geochemistry [PDF]
Solid Earth, 2020 The Sobrado unit, within the upper part of the Órdenes Complex (NW Spain) represents an allochthonous tectonic slice of exhumed high-grade metamorphic rocks formed during a complex sequence of orogenic processes in the middle to lower crust.
J. M. Benítez-Pérez +6 more
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Minerals, 2022 Based on the LA-ICP-MS U-Pb zircon ages of four metamorphic samples, we discuss the geochronology and provenance of the Guadaiza nappe, an allochthonous unit that underlies the Ronda peridotites (Betic Cordilleras, Spain).
J. J. Estéban, J. Cuevas, J. Tubía
semanticscholar +1 more source
Deciphering the metamorphic evolution of the Pulo do Lobo metasedimentary domain (SW Iberian Variscides) [PDF]
Solid Earth, 2020 The Pulo do Lobo domain is one of the units exposed within the orogenic suture zone between the Ossa-Morena and the South Portuguese zones in the SW Iberian Variscides.
I. Pérez-Cáceres +8 more
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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 +3 more
doaj
Geosciences, 2022 Marginal-marine to non-marine ostracod assemblages from the Bajocian (Mid-Jurassic) of southern Tunisia, precisely from the Krachoua Formation at the Kef El Anneba section near the Beni Kheddache area, are here described and tested for their utility to ...
Khaled Trabelsi +9 more
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The eoorthid brachiopod Apheoorthina in the Lower Ordovician of NW Argentina and the dispersal pathways along western Gondwana [PDF]
Acta Palaeontologica Polonica, 2016 The eoorthid brachiopod Apheoorthina is reported for the first time from the Lower Ordovician of NW Argentina. It is represented by a species similar to A.
Diego F. Muñoz , Juan L. Benedetto
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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 +4 more
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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 +7 more
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About a peri-Gondwanan-North African enlarged acceptance of the Caledonian Orogeny
Studia Universitatis Babes-Bolyai, Geologia, 2011 The notion of "Caledonian Orogeny" is restricted by most authors to the Ordovician-Devonian thermotectonic events that are associated with the Laurentia-Baltica-Avalonia suturing. However, some views consider an orogeny as the sum of tectonic, metamorphic, and magmatic events accompanying an entire supercontinent assembly or Wilson cycle.
Balintoni, Ioan +2 more
openaire +3 more sources
Geologica Carpathica, 2016 The Alpine nappe stack in the Penninic-Austroalpine boundary zone in the Rätikon (Austria) contains a 4×1 km tectonic sliver of meta-diorite, known as the Schwarzhorn Amphibolite.
Nilius Nils-Peter +4 more
doaj +1 more source