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Alonso Azcárate, Jacinto ; Rodas, Magdalena ; Fernández-Díaz, Lourdes ; Bottrell, S.H. ; Mas Mayoral, José Ramón ; López Andrés, Sol | John Wiley & Sons, Ltd | 2001The low-grade metasediments of lthe Cameros Basin, northem Spain, host a number of deposits of spectacular quality pyrite mineralization. These formed during regional metamorphism and the pyrite crystals exhibit a wide range of morphologies. On[...]texto impreso
Fernández Barrenechea, José María ; Rodas, Magdalena ; Frey, Martín ; Alonso Azcárate, Jacinto ; Mas Mayoral, José Ramón | Blackwell Scientific publications | 2011The clay mineral assemblages of the Tithonian and Berriasian sediments (Tera and Oncala Groups) in the eastern part of the Cameros basin are investigated at seven localities. The lowest-grade assemblage, located on the southern border of the bas[...]texto impreso
Alonso Azcárate, Jacinto ; Rodas, Magdalena ; Fernández Barrenechea, José María ; Mas Mayoral, José Ramón | Blackwell Scientific publications | 2005Variations in clay mineral assemblages, changes in KuÈbler index (KI), and the chemical composition of chlorites are used to identify source areas in the lacustrine materials in the Lower Cretaceous Leza Limestone Formation of the Cameros Basin,[...]texto impreso
Borruel-Abadía, Violeta ; Fernández Barrenechea, José María ; Galán-Abellán, Belén ; Horra del Barco, Raúl de la ; López Gómez, José ; Ronchi, Ausonio ; Luque del Villar, Francisco Javier ; Alonso Azcárate, Jacinto ; Marzo Carpio, Mariano | Elsevier | 2019-06-20In recent years there is growing evidence of the importance of the Smithian-Spathian (Early Triassic) ecological crisis to explain the delayed recovery of life after the Permian-Triassic Boundary mass extinction. This study focuses on sedimentar[...]texto impreso
Mas Mayoral, José Ramón ; Benito Moreno, María Isabel ; Arribas Mocoroa, José ; Serrano, Ana ; Guimerà Rosso, Joan ; Alonso Millán, Ángela ; Alonso Azcárate, Jacinto | Instituto de Estudios Riojanos (Logroño) | 2002La Cuenca de Cameros, localizada en la parte NO de la Cordillera Ibérica, es una de las cuencas que constituyen el Sistema de Rift Mesozoico Ibérico o Cuenca Ibérica. Se formó en el contexto de la segunda fase de rifting intraplaca que, desde el[...]texto impreso
Alonso Azcárate, Jacinto ; Rodas, Magdalena ; Bottrell, S.H. ; Mas Mayoral, José Ramón ; Raiswell, R. | Sociedad Geológica de España | 1999Los materiales lutíticos de la Cuenca de Cameros presentan en su composición mineralógica muy pequeñas cantidades de sulfuros diseminados (pirita y pirrotita). La pirita sedimentaria aparece fundamentalmente formando framboides, cristales euhedr[...]texto impreso
Díez Herrero, Andrés ; Pedraza Gilsanz, Javier de ; Alonso Azcárate, Jacinto | Seminario de Estudos Galegos. Area de Xeoloxía e Minería ; Instituto Universitario de Xeoloxía "Isidro Parga Pondal" | 1996La fosa de Garganta del Villar (Sistema Central español) es una depresión tectónica subromboidal sobre zócalo cristalino, que localmente contiene depósitos cenozoicos (Paleógeno-Cuaternario). La interpretación geomorfológica, sedimentológica y d[...]texto impreso
Alonso Azcárate, Jacinto ; Rodas, Magdalena ; Fernández Barrenechea, José María ; Mas Mayoral, José Ramón | Sociedad Geológica de España | 1999Los materiales del Grupo Enciso pertenecen a la secuencia deposicional 5 (Barremiense superior - Aptiense inferior) de la Cuenca de Cameros. Esta cuenca presenta una potente serie de materiales de origen continental (hasta 9000 m) y el sector E [...]texto impreso
Lago San José, Marceliano ; Horra del Barco, Raúl de la ; Ubide Garralda, Teresa ; Galé, Carlos ; Galán Abellán, Ana Belén ; Fernández Barrenechea, José María ; López Gómez, José ; Benito Moreno, María Isabel ; Arche, Alfredo ; Alonso Azcárate, Jacinto ; Luque del Villar, Francisco Javier ; Timmerman, Martin J. | Universidad Complutense de Madrid | 2012A multiple basic to intermediate sill is reported for the first time in the south-eastern Iberian Ranges. It is composed of several tabular to irregular levels intercalated within the fluvial sediments of the Alcotas Formation (Middle-Upper Perm[...]texto impreso
Galán Abellán, Ana Belén ; Fernández Barrenechea, José María ; Horra del Barco, Raúl de la ; Alonso Azcárate, Jacinto ; Luque del Villar, Francisco Javier ; Borruel Abadía, Violeta ; López Gómez, José | SEPM | 2020This study compares several geochemical factors (major and minor rare earth elements, Ti/Al ratios, and chemical index of alteration, CIA, values) in the Early Triassic Cañizar Formation (Fm) (Buntsandtein facies) of E Iberia with those of adjac[...]texto impreso
Benito Moreno, María Isabel ; Horra del Barco, Raúl de la ; Fernández Barrenechea, José María ; López Gómez, José ; Rodas, Magdalena ; Alonso Azcárate, Jacinto ; Arche, Alfredo ; Luque del Villar, Francisco Javier | Elsevier | 2005A detailed mineralogical and petrological study and the analysis of paleosol profiles in continental alluvial sediments of the Late Permian in the SE Iberian Ranges (Spain) allow us to infer the significant environmental changes that occurred du[...]texto impreso
González Corrochano, B. ; Alonso Azcárate, Jacinto ; Rodas, Magdalena ; Fernández Barrenechea, José María ; Luque del Villar, Francisco Javier | Elsevier, Ltd. | 2011The microstructure and mineralogy of lightweight aggregates manufactured with washing aggregate sludge, sewage sludge and a clay-rich sediment have been studied. The mineralogical analysis revealed the neo-formation of plagioclase and pyroxene g[...]texto impreso
González Corrochano, B. ; Alonso Azcárate, Jacinto ; Rodas, Magdalena ; Luque del Villar, Francisco Javier ; Fernández Barrenechea, José María | Elsevier Applied Science | 2010The microstructures and mineralogical compositions of lightweight aggregates (LWAs) manufactured with washing aggregate sludge (WS), fly ash (FA) and used motor oil (UMO) have been studied. Most LWAs with WS and FA exhibited an external layer an[...]texto impreso
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Alonso Azcárate, Jacinto ; Arche, Alfredo ; Fernández Barrenechea, José María ; López Gómez, José ; Luque del Villar, Francisco Javier ; Rodas, Magdalena | Elsevier | 1997The evolution of the palaeogeography of the SE Iberian Basin during the Permian and Triassic represents a general evolution from continental to marine environments. It has been recently studied from the sedimentological, stratigraphical, tectoni[...]
