Dinàmica de la Terra i de l'Oceà: Recent submissions
Now showing items 421-440 of 1037
The transition from salt diapir to weld and thrust: Examples from the Northern Flinders Ranges in South Australia
The interactions between salt diapirs, thrust welds and thrusts in contractional belts are poorly understood due to, first, the inability of seismic data to distinguish between thrusts and welds or resolve associated ...
Precisiones cronoestratigráficas sobre la Fm. Escucha en el sector noroeste de la cuenca del Maestrazgo. Cordillera Ibérica oriental
Uno de los problemas clásicos en el estudio del registro sedimentario cretácico de la Cordillera Ibérica es la datación cronoestratigráfica de los materiales detriticos que subyacen al cretácico superior calcáreo, debido ...
Morphometry of Conception Bank: Evidence of geological and biological processes on a large volcanic seamount of the Canary Islands Seamount Province.
Concepcion Bank is the largest seamount in the Canary Islands Seamount Province (CISP), an oceanic area off NW Africa including 16 main seamounts, the Canaries archipelago and the Selvagens subarchipelago. The Bank is ...
Glacial geomorphology of the High Gredos Massif: Gredos and Pinar valleys (Iberian Central System, Spain)
We present a detailed geomorphological map of the landform assemblages originated by the two major paleoglaciers of the Sierra de Gredos mountain range in the Spanish Iberian Central System. Based on previous works, our ...
Impact of the historical introduction of exotic fishes on the chironomid community of Lake Azul (Azores Islands)
Little is known about the effect of top predator introduction in historically fishless communities, especially on remote islands. This issue is important because it might strongly affect climate reconstructions derived ...
Impact of open-ocean convection on particle fluxes and sediment dynamics in the deep margin of the Gulf of Lions.
Abstract. The deep outer margin of the Gulf of Lions and the adjacent basin, in the western Mediterranean Sea, are regularly impacted by open-ocean convection, a major hydrodynamic event responsible for the ventilation of ...
Effects of coastal submarine canyons on tsunami propagation and impact
We analyse the variations produced on tsunami propagation and impact over a straight coastline because of the presence of a submarine canyon incised in the continental margin. For ease of calculation we assume that the ...
Timing and nature of alluvial fan and strath terrace formation in the Eastern Precordillera of Argentina
Sixty-eight 10Be terrestrial cosmogenic nuclide (TCN) surface exposure ages are presented to define the timing of alluvial fan and strath terrace formation in the hyper-arid San Juan region of the Argentine Precordillera. ...
A sequence stratigraphic based geological model for constraining hydrogeological modeling in the urbanized area of the Quaternary Besòs delta (NW Mediterranean coast, Spain)
The Quaternary Besòs delta is located on the Mediterranean coast in NE Spain. The Besòs Delta Complex includes 3 aquifers constituted by 3 sandy and gravelly bodies, separated by lutitic units. These aquifers supply water ...
The influences of the AMO and NAO on the sedimentary infill in an Azores Archipelago lake since ca. 1350 CE
The location of the Azores Archipelago in the North Atlantic makes this group of islands an excellent setting to study the long-term behavior of large oceanic and atmospheric climate dynamic patterns, such as the Atlantic ...
Peces fósiles en el Eoceno superior de La Plana de Vic (Barcelona): Nuevos yacimientos y significado sedimentario.
The Plana de Vic is located towards the NE of the Ebro Basin and is mainly characterized by a thick pile of marine sediments that accumulated along the Palaeogene. Overlying a Palaeozoic basement and a marked unconformity ...
Evidencias geomorfológicas y estructurales del levantamiento tectónico reciente en la terminación suroccidental de la falla de Alhama de Murcia (cordillera Bética oriental)
En este trabajo analizamos la actividad tectónica reciente mediante 1)un estudio geomorfológico de los abanicos aluviales y de la red de drenaje, y 2)un estudio de la deslocación vertical de los abanicos aluviales. Como ...
Modern sedimentation patterns and human impacts on the Barcelona continental shelf (NE Spain).
Seafloor sediments were collected from the Barcelona continental shelf, NE Spain, to determine the textural characteristics and sedimentary processes related to different depositional systems and human pressures. The ...
Evolution of submarine canyons and hanging-wall fans: insights from geomorphic experiments and morphodynamic models
Tectonics play a significant role in shaping the morphology of submarine canyons, which form essential links in source-to-sink (S2S) systems. It is difficult, however, to investigate the resulting morphodynamics over the ...
Influence of de acute accent collement-cover thickness variations in fold-and-thrust belts: Insights from centrifuge analog modeling
Centrifuge analog modeling incorporating thickness variations of décollement and overlying sedimentary cover is used to study thrust-wedge evolution on salt-detached contractional systems involving tapered sedimentary ...
Modelos 3D de análogos de reservorios sedimentarios: Aplicación al sistema de abanico costero eoceno de Sant Llorenç del Munt (Cuenca del Ebro)
3D reservoir characterizations of analogues based on outcrop studies provide geological information that can be used for reducing uncertainty in subsurface reservoir modelling to predict interwell areas. 3D reservoir-scale ...
Fósiles urbanos: un patrimonio paleontológico que pasa inadvertido.
Desde las primeras construcciones hasta nuestros días, diferentes tipos de rocas (sedimentarias, ígneaso metamórficas) han sido explotadas principalmente en función de si presentan o no unas cualidades óptimas para tal ...
Stretching and contraction of extensional basins with pre-rift salt: a numerical modelling approach
We present a series of 2D thermo-mechanical numerical experiments of thick-skinned crustal extension including a pre-rift salt horizon and subsequent thin-, thick-skinned, or mixed styles of convergence accompanied by ...
Paleoecology of Easter Island: evidence and uncertainties
The existence of palm-dominated forests covering the island since the last glaciation and the recent deforestation by humans are paradigmatic in Easter Island's paleoecological reconstructions. The timing and mode of the ...
Geology of the Eastern Prebetic Zone at the Jumilla region (SE Iberia)
This article presents a geological map and cross-sections at 1:50,000 scale covering an area of 609 km2 of the Eastern Prebetic Zone (SE Iberia). The structure of the studied area is characterized by an NW-directed ...
