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Autor Sánchez Martínez, Sonia |
Documentos disponibles escritos por este autor (40)
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Díaz García, Florentino ; Sánchez Martínez, Sonia ; Castiñeiras García, Pedro ; Fuenlabrada Pérez, José Manuel ; Arenas Martín, Ricardo | Elsevier Science B. V., Amsterdam | 2009The arc-derived upper units of the Órdenes Complex, NW Iberia, are emplaced above the Variscan suture and contain a low-grade metasedimentary uppermost section, with a maximum depositional age of 510–530 Ma, intruded by a number of mafic dykes. [...]![]()
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Fuenlabrada Pérez, José Manuel ; Arenas Martín, Ricardo ; Sánchez Martínez, Sonia ; Díaz García, Florentino ; Castiñeiras García, Pedro | Elsevier Science B. V., Amsterdam | 2010The arc-derived upper terrane in the NW Iberia Variscan belt contains a 3000 m thick turbiditic formation at its structural top. Most of the sandstones are feldspathic greywackes with a framework of quartz and weakly altered plagioclase. Rock fr[...]![]()
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A pre-Rodinian ophiolite involved in the Variscan suture of Galicia (Cabo Ortegal Complex, NW Spain)
Sánchez Martínez, Sonia ; Jeffries, Teresa E. ; Arenas Martín, Ricardo ; Fernández Suárez, Javier ; García Sánchez, Raquel | Geological Society of London. | 2006U–Pb dating of zircons from a metagabbro of the Purrido amphibolitic unit (Cabo Ortegal Complex, NW Iberian Massif) yielded an age of 1159 ± 39 Ma, interpreted to approximate the crystallization age of the gabbroic protolith. Considering the arc[...]![]()
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Albert Roper, Richard ; Arenas Martín, Ricardo ; Gerdes, Axel ; Sánchez Martínez, Sonia ; Marko, Linda | Sociedad Geológica de España. | 2016The Variscan Upper Allochthon is a continental-affinity terrane that recorded a Cambrian–Ediacaran magmatic arc generation, a subsequent transition to a passive margin, and a collision-related high-P metamorphism during the Devonian–Carboniferou[...]![]()
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Albert, R. ; Arenas Martín, Ricardo ; Gerdes, Axel ; Sánchez Martínez, Sonia ; Fernández-Suárez, J. ; Fuenlabrada Pérez, José Manuel | Elsevier | 2015-12his study focuses on the provenance of the uppermost unit of the Upper Allochthon of the Variscan belt with combined U–Pb and Lu–Hf zircon (LA-ICPMS) and Sm–Nd whole-rock analyses. This unit is represented in the Cabo Ortegal Complex (NW Iberia)[...]![]()
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Andonaegui Moreno, Pilar ; Sánchez Martínez, Sonia ; Castiñeiras García, Pedro ; Abati Gómez, Jacobo ; Arenas Martín, Ricardo | Springer | 2016-04In the allochthonous complexes of the NW Iberian Massif, the Upper Units have been interpreted as a section of a peri-Gondwanan magmatic arc active from Middle Cambrian to Early Ordovician times. The main plutonic bodies intruding the arc metase[...]![]()
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Novo Fernández, Irene ; Albert Roper, Richard ; Arenas Martín, Ricardo ; Garcia Casco, Antonio ; Díez Fernández, Rubén ; Sánchez Martínez, Sonia | Wiley | 2020The Upper Units of the allochthonous complexes of the NW Iberian Massif constitute a terrane with continental affinity. They represent the vestiges of a Cambrian magmatic arc developed in the periphery of Gondwana (West African Craton) which was[...]![]()
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Martínez Catalán, José R. ; Arenas Martín, Ricardo ; Abati Gómez, Jacobo ; Sánchez Martínez, Sonia ; Díaz García, Florentino ; Fernández Suárez, Javier ; González Cuadra, Pablo ; Castiñeiras García, Pedro ; Gómez Barreiro, Juan ; Díez Montes, Alejandro ; González Clavijo, Emilio ; Rubio Pascual, Francisco J. ; Andonaegui Moreno, Pilar ; Jeffries, Teresa E. ; Alcock, James E. ; Díez Fernández, Rubén ; López Carmona, Alicia | Elsevier Masson, France | 2009Ophiolites of different Paleozoic ages occur in North-West (NW) Iberia in a rootless suture representing the remnants of the Rheic Ocean. Associated allochthonous terranes in the hanging- and foot-walls of the suture derive from the former margi[...]![]()
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Díez Fernández, Rubén ; Arenas Martín, Ricardo ; Sánchez Martínez, Sonia ; Novo Fernández, Irene ; Albert Roper, Richard | Wiley | 2021Within the Variscan Orogen, Early Devonian and Late Devonian high?P belts separated by mid?Devonian ophiolites can be interpreted as having formed in a single subduction zone. Early Devonian convergence nucleated a Laurussia?dipping subduction z[...]![]()
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Fuenlabrada Pérez, José Manuel ; Arenas Martín, Ricardo ; Díez Fernández, Rubén ; Sánchez Martínez, Sonia ; Abati Gómez, Jacobo ; López Carmona, Alicia | Elsevier Science B.V., Amsterdam | 2012The basal units of the allochthonous complexes of NW Iberia are formed by thick metasedimentary rock sequences intruded by granitoids, ranging in composition from calc-alkaline (c. 493 Ma) to minor alkaline– peralkaline massifs (c. 475–470 Ma), [...]![]()
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Díez Fernández, Rubén ; Arenas Martín, Ricardo ; Pereira, M. Francisco ; Sánchez Martínez, Sonia ; Albert Roper, Richard ; Martín Parra, Luis-Miguel ; Rubio Pascual, Francisco-J. ; Matas, Jerónimo | Elsevier | 2016-11An integrated interpretation of the late Paleozoic structural and geochronological record of the Iberian Massif is presented and discussed under the perspective of a Gondwana-Laurussia collision giving way to the Variscan orogen. Compressional a[...]![]()
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Arenas Martín, Ricardo ; Sánchez Martínez, Sonia ; Castiñeiras García, Pedro ; Jeffries, Teresa E. ; Díez Fernández, Rubén ; Andonaegui Moreno, Pilar | Universidad Complutense de Madrid | 2009Recent field work and mapping in the lower units of the Cabo Ortegal Complex provided new data about the tectonic mélange that appears in the lowest structural position: the Somozas Mélange. This mélange unit with average thickness of 1800 m is [...]![]()
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Sánchez Martínez, Sonia ; Gerdex, Axel ; Arenas Martín, Ricardo ; Abati Gómez, Jacobo | Blackwell Publishing Ltd | 2012The Bazar Ophiolite, one of the ophiolitic units involved in the Variscan suture of NW Iberia, is mainly formed by metagabbroic high T amphibolites with N-MORB affinity. The ophiolite appears accreted under an arc-derived upper terrane affected [...]![]()
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Arenas Martín, Ricardo ; Fernández Suárez, Javier ; Montero, Pilar ; Díez Fernández, Rubén ; Andonaegui Moreno, Pilar ; Sánchez Martínez, Sonia ; Albert Roper, Richard ; Fuenlabrada Pérez, José Manuel ; Matas, Jerónimo ; Martín Parra, Luis Miguel ; Rubio Pascual, Francisco J. ; Jiménez Díaz, Alberto ; Pereira, M. Francisco | Elsevier | 2018-07In the Ossa Morena Domain of SW Iberia, the Calzadilla Ophiolite is formed by an ensemble of ultramafic and mafic rocks that seem to represent a fragment of an oceanic Moho transition zone. The ophiolite consists of a main sheet with a minimum t[...]![]()
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Andonaegui Moreno, Pilar ; Castiñeiras García, Pedro ; González Cuadra, Pablo ; Arenas Martín, Ricardo ; Sánchez Martínez, Sonia ; Abati Gómez, Jacobo ; Díaz García, Florentino ; Martínez Catalán, José Ramón | Elsevier Science B.V., Amsterdam | 2012The Corredoiras orthogneiss belongs to the intermediate pressure upper units of the Órdenes Complex (Variscan belt, NW Spain), mainly composed by granodioritic orthogneisses, with small bodies of tonalitic orthogneisses, amphibole-rich orthognei[...]