Browsing Artículos by Author "Esteban Guzmán, José Julián"
Now showing items 1-5 of 5
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Peri-Gondwanan Provenance and Geodynamic Evolution of The Guadaiza Nappe (Alpujarride Complex, Betic Cordilleras, Spain): Insights on The Paleotethyan Paleogeography
Esteban Guzmán, José Julián; Cuevas Urionabarrenechea, Julia; Tubía Martínez, José María (MDPI, 2022-03-05)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). ... -
Posets pluton: a geochronological piece in the puzzle of the Axial Zone of the Pyrenees
Esteban Guzmán, José Julián; Cuevas Urionabarrenechea, Julia; Tubía Martínez, José María; Hilario, Asier; Larionov, Alexander; Sergeev, Sergei (Cambridge University Press, 2021-12)[EN]A detailed geochronological study was conducted on zircons from a diorite sample of the Posets pluton (Axial Zone, Pyrenees). The extracted igneous zircons constrain the emplacement of the pluton to 302 +/- 2 Ma and ... -
Provenance Analysis of the Ojén Nappe and Its Implication for the Geodynamic History (Alpujárride Complex, Betic Cordilleras, Spain)
Esteban Guzmán, José Julián; Cuevas Urionabarrenechea, Julia; Tubía Martínez, José María (MDPI, 2023-04-18)The Ojén nappe, an allochthonous unit that underlies the Ronda peridotites (Betic Cordilleras), is composed of Triassic marbles overlying a metapelitic sequence. In order to carry out an LA-ICP-MS U-Pb age determination ... -
The magmatism of Atienza (NW Iberian Chain, Spain): age, origin and architecture of the magmatic plumbing system
Majarena Serrano, Urbez; Galé Bornao, Carlos; Esteban Guzmán, José Julián; Lago, Marceliano; Gil Imaz, Andrés (Springer, 2023-03)A sill covering an area of more than 15 km2, several dykes up to 5 m thick and a volcanoclastic deposit crop out with similar petrology in the sector of Atienza (NW Iberian Chain, Spain). They consist of calc-alkaline ... -
Time Lag between Metamorphism and Crystallization of Anatectic Granites (Cordoba, Argentina)
D'Eramo, Fernando J.; Esteban Guzmán, José Julián; Demartis, Manuel; Aragón, Eugenio; Coniglio, Jorge E.; Pinotti, Lucio P. (Universidad Autónoma de Barcelona, Instituto de Ciencias de la Tierra Jaume Almera-CSIC, 2020)SHRIMP and LA-ICP-MS analyses carried out on zircons from the Rio de los Sauces granite revealed their metamorphic and igneous nature. The metamorphic zircons yielded an age of 537 +/- 4.8 (2s)Ma that probably predates the ...