Dinàmica de la Terra i de l'Oceà: Enviaments recents
Ara mostrant els elements 341-360 de 1037
Grosor de la corteza oceánica en dorsales de expansión y alrededores en el Paso del Drake (Antártida) a partir de inversión numérica de datos gravimétricos
The high density of geophysical data (gravity, bathymetry...) collected in the ANTPAC 97/98 cruise by the Spanish BIO Hespérides allows us to obtain the crustal thickness of the areas near the intersection of the Shackleton ...
'Anomalous' magnetic fabrics of dikes in the stable single domain/superparamagnetic threshold
'Anomalous' magnetic fabrics in dikes that appear to indicate flowinto thewall confound many workers. Here, we present extensivemagnetic data on five dikes from Tenerife, Canary Islands, and use these to interpret the ...
Groundwater discharge as a driver of methane emissions from Arctic lakes
Lateral CH4 inputs to Arctic lakes through groundwater discharge could be substantial and constitute an important pathway that links CH4 production in thawing permafrost to atmospheric emissions via lakes. Yet, groundwater ...
Potentially pathogenic bacteria in the plastisphere from water, sediments and commercial fish in a tropical coastal lagoon: an assessment and management proposal
Microplastics in aquatic ecosystems harbor numerous microorganisms, including pathogenic species. The ingestion of these microplastics by commercial fish poses a threat to the ecosystem and human livelihood. Coastal lagoons ...
Anthropogenic activity and millennial climate variability affect Holocene mercury deposition of an alpine wetland near the largest mercury mine in China
Mercury (Hg) is a volatile heavy metal that can be transported globally through the atmosphere and has a significant harmful impact on terrestrial and aquatic ecosystems. Mining is one of the most important anthropogenic ...
The fossil crown wasp Electrostephanus petiolatus Brues in Baltic Amber (Hymenoptera, Stephanidae): designation of a neotype, revised classification,and a key to amber Stephanidae.
The fossil crown wasp Electrostephanus petiolatus Brues comb. rev.(Stephanidae, Electrostephaninae) is re-described from a single male preserved in middle Eocene Baltic Amber. The holotype was lost or destroyed around the ...
El Miocè inferior de la conca del Vallès-Penedès: un registre excepcional dels canvis climàtics i faunístics.
Les intervencions paleontològiques recents han mostrat que el registre de vertebrats continentals del Miocè inferior de la conca del Vallès-Penedès és molt més ric i continu del que es pensava. Avui dia es coneixen una ...
Caracterización paleoclimática de la serie margosa Langhiense de Can Rosell (Barcelona)
La serie de Can Rosell se localiza en la cuenca del Penedés (provincia de Barcelona). Esta serie está formada por una sucesión de margas grises con pequeñas intercalaciones de areniscas que pasan hacia el techo a una ...
Macrolitter contamination in beach, dune, and mangrove ecosystems on a Caribbean island: A comparative analysis
Litter pollution is a global issue that threatens biodiversity and ecosystem services, especially on vulnerable islands. This study assesses and compares the abundance and composition of macrolitter, including plastic ...
El Complejo Turbidítico del Carbonífero del Priorat (Tarragona)
Relaciones entre las asociaciones de facies de las tres unidades litoestratigráficas del complejo turbidítico y su asimilación a unidades deposicionales dentro de modelos de sedimentación submarina.
Thick-skinned tectonic style resulting from inversion of previous structures in the Southern Cordillera Oriental (NW Argentine Andes)
Structures mapped in the southern Cordillera Oriental of the Andes show an unexpected geometry in an east-west cross-sectional view, with a remarkable predominance of west-directed thrusts. Although some of the Andean ...
Study of Johnsons Glacier (Livingston Island, Antarctica) by means of shallow ice cores and their tephra and by analysis of 137Cs content
With the aim of monitoring the dynamics of the Livingston Island ice cap, the Departament de Geodinàmica i Geofísica of the Universitat de Barcelona began ye a r ly surveys in the austral summer of 1994-95 on Johnsons ...
Paleoseismology along the Cofradía fault, Managua, Nicaragua: preliminary results
La falla de Cofradía es una falla normal de orientación N-S que limita por el E el graben de Managua y tiene una longitud de 40 km. Esta falla es sísmicamente activa y, a partir de datos históricos, a ella se han asociado ...
Datación de avenidas torrenciales y flujos de derrubios mediante metodologías dendrogeomorfológicas (barranco de Portainé, Lleida, España).
La dendrogeomorfología resulta una herramienta muy útil en el análisis científico-técnico de las avenidas y flujos de derrubios en torrentes de alta montaña, en los que las fuentes de datos convencionales (caudales o ...
The impact of online teaching on Geology degree programs during COVID-19: A case study from the University of Barcelona (Spain)
The sudden shift during the COVID-19 lockdown from face-to-face to online teaching clearly impacted degree programmes in Geology characterized by a substantial practical teaching methodology. This study analyses the ...
A geological cross-section along the Basque Pyrenees and the Parentis Basin (Western Pyrenees)
A new geological cross- section along the North Iberian Margin shows a complete image of the Western Pyrenees and the Parentis Basin as well as the geometric differences and age constraints between both Pyrenean fronts. ...
Modelling syntectonic sedimentation: combining a discrete element model of tectonic. Deformation and process-based sedimentary Model in 3D.
This paper presents a new numerical program able to model syntectonic sedimentation. The new model combines a discrete element model of the tectonic deformation of a sedimentary cover and a process-based model of sedimentation ...
Messinian paleoenvironmental evolution in the lower Guadalquivir Basin (SW Spain) based on benthic foraminifera.
Benthic foraminiferal assemblages of a drill core from the lower Guadalquivir Basin (northern Gulf of Cádiz, SW Spain) have been analyzed in order to reconstruct the paleoenvironmental evolution in the vicinity of the Betic ...
Presencia de Teredolites en la Formación Arcillas de Morella (Cretácico inferior, Castellón)
En el presente trabajo se da a conocer la presencia de troncos con perforaciones en la Formación Arcillas de Morella (Aptiense Inferior, Castellón). Se han reconocido dos formas correspondientes a dos icnoespecies diferentes: ...
Sediment undulations on the Llobregat prodelta: Signs of early slope instability or sedimentary bedforms?
A field of sediment undulations has been mapped by means of high resolution multibeam bathymetry and seismic reflection profiles in the Llobregat River prodelta, off the city of Barcelona, Catalonia, Spain. Similar features ...
