Sucesión de Polygnátidos (Conodontos) del Emsiense (Devónico Inferior) en los Pirineos Centrales Españoles

A comprehensive conodont study of five sections of Emsian age, carried out in the Spanish Central Pyrenees, has revealed an important succession of polygnathids that can be used for identifying basal boundaries of globally recognized biozones. This succession consists of Polygnathus excavatus excavatus, Po. gronbergi, Po. nothoperbonus, Po. mashkovae, Po. laticostatus, and the new species Polygnathus luciae that allows the identification of the excavatus, nothoperbonus and laticostatus Zones. The nothoperbonus Zone is further subdivided into Lower and Upper nothoperbonus subzones, relying upon the lowest occurrence of Po. mashkovae. These biostratigraphic data from the Spanish Central Pyrenees corroborate the succession of conodont indexes in other regions of Europe (north-western France and southern Italy), North Africa (Morocco), Central Asia, Australia, and North America (Alaska, Nevada and Canada).El estudio exhaustivo de cinco secciones de edad Emsiense en el Pirineo Central Español ha proporcionado una importante sucesión de especies de conodontos del género Polygnathus que puede usarse para reconocer los límites de diferentes biozonas de aplicación global. Esta sucesión consiste en Polygnathus excavatus excavatus, Po. gronbergi, Po. nothoperbonus, Po. mashkovae, Po. laticostatus y la nueva especie Polygnathus luciae, lo que permite identificar las biozonas excavatus, nothoperbonus y laticostatus. Además, el primer registro de Po. mashkovae se usa para subdividir la Zona nothoperbonus en las Subzonas nothoperbonus Inferior y Superior. Estos datos corroboran la sucesión de los índices de conodontos registrada en otras regiones de Europa (noroeste de Francia y sur de Italia), norte de África (Marruecos), Asia central, Australia y Norte América (Alaska, Nevada y Canadá)

Informe: Derecho del trabajo y de la seguridad social en España en 2013. Algunos puntos críticos

Este documento intenta reflejar algunos de los principales cambios y novedades del ordenamiento laboral español en 2013, levantando acta de cómo la mutabilidad de nuestro Derecho del Trabajo es imparable. Este informe, consciente de ello, ofrece una selección de elementos esenciales, a juicio de sus autores, especialistas en cada una de las materias, encuadrados en la Sección Juvenil de la Asociación Española de Derecho del Trabajo y de la Seguridad Social. En él, conforme a la organización de dicha Sección en grupos de trabajo, se abordan las novedades más relevantes en materia de derechos fundamentales inespecíficos, contratación laboral, vicisitudes del contrato de trabajo, Derecho colectivo, conciliación y corresponsabilidad, protección social y prevención de riesgos laborales. This paper tries to show some of the many changes and novelties in Spanish Labour Law during 2013, drawing up a record of the unstoppable character of our Labour legal system. This report offers a selection of essential elements, according to its authors, all of them specialists in each one of the subjects, being part of the Young Scholars’ Section of the Spanish Association for Labour and Social Security Law. According to the organization of the said Section in working groups, we can find novelties concerning unspecific fundamental rights, work contracts, the life of the work contract and collective Labour Law, reconciliation and co responsibility, social protection and occupational risk prevention

El derecho del trabajo y de la seguridad social en España en 2014

Este documento intenta reflejar algunos de los principales cambios y novedades del ordenamiento laboral español en 2014, levantando acta de cómo la mutabilidad de nuestro Derecho del Trabajo es imparable. Este informe, consciente de ello, ofrece una selección de elementos esenciales, a juicio de sus autores, especialistas en cada una de las materias, encuadrados en la Sección Juvenil de la Asociación Española de Derecho del Trabajo y de la Seguridad Social. En él, conforme a la organización de dicha Sección en grupos de trabajo, se abordan las novedades más relevantes en materia de derechos fundamentales inespecíficos, contratación laboral, vicisitudes del contrato de trabajo, Derecho colectivo, conciliación y corresponsabilidad, protección social y prevención de riesgos laborales. This paper tries to show some of the many changes and novelties in Spanish Labour Law during 2014, drawing up a record of the unstoppable character of our Labour legal system. This report offers a selection of essential elements, according to its authors, all of them specialists in each one of the subjects, being part of the Young Scholars’ Section of the Spanish Association for Labour and Social Security Law. According to the organization of the said Section in working groups, we can find novelties concerning unspecific fundamental rights, work contracts, the life of the work contract and collective Labour Law, work-life balance and co responsibility, social protection and occupational risk prevention

A brief summary of the Ordovician conodont faunas from the Iberian Peninsula

Ordovician conodont studies in the Iberian Peninsula were initiated by Fuganti and Serpagli (1968), who recognized 21 morphospecies included in 15 morphogenera in the Upper Ordovician Urbana Limestone from a single locality in the Central Iberian Zone. Two years later Boersma (in Hartevelt, 1970) identified several morphotaxa in the Upper Ordovician Estana Formation of the Central Pyrenees. In the type section of the Upper Ordovician Cystoid Limestone of the Eastern Iberian Cordillera, Carls (1975) recognised 31 conodont morphotaxa. These pioneer findings were followed by the contributions of Kolb (1978), Hafenrichter (1979), Robert (1980), Robardet (1982) and Sanz (1988), who increased the number of taxa and localities with Katian conodonts, mostly attributed to the Amorphognathus ordovicicus Zone. For twenty years, our knowledge on Ordovician conodonts came only from the single ubiquitous limestone unit that occurs in the upper part of many Iberian successions. Nonetheless, these are predominantly composed of terrigenous rocks (shales, siltstones and sandstones) which were deposited at high Gondwanan paleolatitudes near the South Pole (Gutiérrez-Marco et al., 2002, 2004). Then, some of these clastic deposits (siltstones, shales and storm-induced coquinoid lenses, sometimes calcareous) were also sampled for conodonts: while siltstones and shales produced only fragmentary specimens, bioclastic beds in tempestites yielded usually fragmentary, but recognisable, elements.Peer reviewe

First finding of upper Silurian and Lower Devonian conodonts from the Peloritani Mountains (NE Sicily, southern Italy).

In the Peloritani Mountains (NE Sicily), the Favoscuro west section (near Pizzo Leo, between Floresta and Roccella Valdemone, Messina Province) cross-cuts the Variscan basement of the Longi-Taormina Unit. This section, in the less deformed part, shows a mildly metamorphosed continuous 50-m-thick Palaeozoic succession of metamarls and calc-schists with a bed of nodular metalimestones occurring at the base and of calc-schists at the top. The basal bed yielded a conodont fauna consisting of several fragments of Pa elements of Ancoradella cf. A. ploeckensis Walliser, 1964 (Ludlow, Ancoradella ploeckensis - Polygnathoides siluricus zones). The topmost bed yielded one fragment of a Pa element of Polygnatus cf. P. kitabicus Yolkin, Weddige, Izokh & Erina, 1994 (early Emsian, Polygnathus kitabicus - Polygnathus excavatus zones). This conodont fauna, although not well preserved due to greenschist facies metamorphism and deformation, for the first time enables the recognition of upper Silurian and Lower Devonian rocks in the Peloritani Mountains. The Favoscuro west section studied herein is of important stratigraphic significance as it encompasses the Silurian/Devonian boundary

Variscan tectonics in the Malaguide Complex (Betic Cordillera, southern Spain): stratigraphic and structural Alpine vs. Pre-Alpine constraints from the Ardales area (Province of Malaga). Part II: Structure

Unraveling structural features related to different orogenic cycles is fundamental for a better understanding of collisional orogens, particularly concerning the role of structural inheritance and extent of crustal reworking. In the Internal Domains of the Betic Cordillera, the geometry and kinematics of pre-Alpine contractional deformation in the Paleozoic basements are rather poorly known. At Ardales, a strongly deformed area corresponding to part of the Alpine suture zone of the Betic Cordillera, the Malaguide Complex consists of two distinct, superposed Alpine tectonic units, including both Paleozoic basement and Mesozoic-Tertiary cover rocks. Within the Alpine footwall unit, stratigraphic data document a tectonic superposition of two subunits made of different Paleozoic successions, which was later fossilized by Triassic redbeds. Structural analysis indicates that the contact between these subunits is an east-directed overthrust and that the internal structure of the lower subunit is consistent with bulk noncoaxial strain dominated by top-to-the-E shearing. These features show a marked contrast with the well-known Alpine nappe transport direction to the N-NW, with tectonic features developed along the Internal-External Domain boundary and with the structural trends obtained from the analysis of Mesozoic-Tertiary Malaguide rocks of the area. This study demonstrates that east-directed thrusting and shearing within Paleozoic Malaguide rocks resulted from Variscan tectonics and that careful, detailed, and integrated stratigraphic and structural analysis is necessary to avoid confusion between older and newer orogenic cycles in the Internal Domain Units of the Betic Cordillera