Dinàmica de la Terra i de l'Oceà: Envíos recientes
Mostrando ítems 381-400 de 1037
Arthropods in modern resins reveal if amber accurately recorded forest arthropod communities
Amber is an organic multicompound derivative from the polymerization of resin of diverse higher plants. Compared with other modes of fossil preservation, amber records the anatomy of and ecological interactions between ...
Hipparion dispersal in Europe: magnetostratigraphic constraints from the Daroca area (Spain)
The Nombrevilla section in the Calatayud-Daroca basin (Central Spain) bears one of the best late Aragonian to early Vallesian large and small vertebrate fossil records in Europe, including important findings of the equid ...
Sobre la edad oligocénica inferior del yacimiento de Santpedor (Cuenca del Ebro, provincia de Barcelona)
Un muestreo intensivo del clasico yacimiento de mamíferos fósles de Santpedor ha dado como resultado la presencia de Theridomys aff. aquatilis, Gliravus aff. priscus, Eucricetodon atavus y Pseudoltinomys gaillardi. Esta ...
La obra pública y el medio físico
A partir de experiencias personales como profesional de la Geolo- gía en el ámbito de la relación entre la Obra Pública y el Medio Físico, se expone la visión actual y perspectivas de futuro. Palabras clave: Medio Físico, ...
Ecology of the collapse of Rapa Nui society
Collapses of food producer societies are recurrent events in prehistory and have triggered a growing concern for identifying the underlying causes of convergences/divergences across cultures around the world. One of the ...
First tracks of newborn straight-tusked elephants (Palaeoloxodon antiquus).
Tracks and trackways of newborns, calves and juveniles attributed to straight-tusked elephants were found in the MIS 5 site (Upper Pleistocene) known as the Matalascañas Trampled Surface (MTS) at Huelva, SW Spain. Evidence ...
Trench-parallel ridge subduction controls upper-plate structure and shallow megathrust seismogenesis along the Jalisco-Colima margin, Mexico
The parameters allowing for near-trench megathrust ruptures are debated and commonly involve the presence of site-dependent tectonic factors (e.g. rough subducting topography, amount of sediments), implying the need for ...
Euthyneura del Plioceno del Empordà (Girona). Descriptiva y sistemática
En el presente trabajo se describen.16 especies de Euthyneura procedentes del Plioceno ael Empordh. Girona. Para ello se ha tenido en cuenta tanto el material nuevo como el procedente de las colecciones ya existentes, ...
The International Bathymetric Chart of the Arctic Ocean (IBCAO) Version 4.0
Bathymetry (seafloor depth), is a critical parameter providing the geospatial context for a multitude of marine scientific studies. Since 1997, the International Bathymetric Chart of the Arctic Ocean (IBCAO) has been the ...
Los aludes. Actuaciones para la reducción de su peligrosidad.
Snow avalanches are a natural hazard whose negative consequences have multiplied in recent times owing to demographic expansion and increased infrastructures in mountain areas. Therefore, the minimisation of the negative ...
Secuencias de propagación del sistema de cabalgamientos de la terminación oriental del manto del Pedraforta y relación con los conglomerados sinorogénicos
Los conglomerados sinorogénicos asociados al manto inferior del Pedraforca se depositaron durante la eta-pa de progresiva emersión del manto (emplazamiento) y determinan una edad Luteciense inferior alto-Luteciense medio ...
Deep incision in an Aptian carbonate succession indicates major sea-level fall in the Cretaceous
Long-term relative sea-level cycles (0 5 to 6 Myr) have yet to be fully understood for the Cretaceous. During the Aptian, in the northern Maestrat Basin (Eastern Iberian Peninsula), fault-controlled subsidence created ...
Geology of giant quartz veins and their host rocks from the Eastern Pyrenees (Southwest Europe)
Giant Quartz Veins (GQVs) are ubiquitous in different tectonic settings and, besides being often related to hydrothermal ore deposits, also represent large-scale fingerprints of the structural and geochemical history of ...
Environmental conditions controlling Cold-water corals occurrence in western Melilla (western Mediterranean) since the last deglaciation
Cold-water corals (CWCs) are widely scattered in the southern Alboran Sea (westernmost Mediterranean), specifically in the so-called East and West Melilla CWC mound provinces (EMCP, WMCP). In this study, we present ...
La Palma island (Spain) geothermal system revealed by 3D magnetotelluric data inversion
The study of geothermal systems is nowadays a topic of great importance because of the huge amount of energy that could be converted in electricity for human consumption from such sources. Among the various geophysical ...
Dynamique Sédimentaire lacustre de marge glaciaire: le paléolac de Llestuí (Noguera Ribagorçana- versant sud des Pyrénées)
L'étude sédimentologique du complexe sédimentaire glaciaire de Llestui (Vallée de LIauset) formé du dernier cycle glaciaire, nous permet de reconnaître les différents processus sédimentaires du milieu lacustre juxtaglaciaire. ...
Rasgos del Micromodelado periglaciar actual sobre zonas graníticas de los Pirineos españoles (Panticosa, Huesca y Cavaller, Lleida)
El objeto de nuestro trabajo es el estudio del micromodelado desarrollado sobre granito y su evolución postglacial en dos áreas de los Pirineos Españoles: Panticosa (valle del río Gállego) y Cavallers (valle del río Koguera ...
Prospección sísmica en el Glaciar Johnsons, Isla Livingston (Antártida). (campañas antárticas 1996-1997 y 1997-1998)
Durante las campañas antárticas de 1996-97 y 1997-98, se realizaron en el glaciar Johnsons (Isla Livingston, A n t á rtida) cinco perfiles sísmicos de refracción (con un total de 2.685 m longitud) y dos perfiles de reflexión ...
Particle fluxes and their drivers in the Avilés submarine canyon and adjacent slope, central Cantabrian margin, Bay of Biscay
The Avilés Canyon in the central Cantabrian margin is one of the largest submarine canyons in Europe, extending from the shelf edge at 130 m depth to 4765 m depth in the Biscay abyssal plain. In this paper we present the ...
DNA form resin-embedded organisms: Past, present and future
Past claims have been made for fossil DNA recovery from various organisms (bacteria, plants, insects and mammals, including humans) dating back in time from thousands to several million years BP. However, many of these ...
