El cos en el net.art

L'objectiu d'aquest projecte és l'estudi del cos en el net.art en el període comprès entre el 1996 i el 1999. La intenció d'aquest estudi és utilitzar tècniques qualitatives i de comparació per poder realitzar l'anàlisi de les obres que ens ajudin a arribar a unes conclusions sobre la manera d'interpretar el cos en el net.art.

Mid- to Late Holocene shoreline reconstruction and human occupation in Ancient Eretria (South Central Euboea, Greece)

Few studies have aimed to reconstruct landscape change in the area of Eretria (South Central Euboea, Greece) during the last 6000 years. The aim of this paper is to partially fill in this gap by examining the interaction be- tween Mid- to Late Holocene shoreline evolution and human occupation, which is documented in the area from the Late Neolithic to the Late Roman period (with discontinuities). Evidence of shoreline displacements is derived from the study of five boreholes (maximum depth of 5.25 m below the surface) drilled in the lowlands of Eretria. Based on sedimentological analyses and micro/macrofaunal identifications, different facies have been identified in the cores and which reveal typical features of deltaic progradation with marine, lagoonal, fluvio- deltaic and fluvial environments. In addition, a chronostratigraphy has been obtained based on 20 AMS 14C radio- carbon dates performed on samples of plant remains and marine/lagoonal shells found in situ. The main sequences of landscape reconstruction in the plain of Eretria can be summarized as follows: a marine environ- ment predominated from ca. 4000 to 3200 cal. BC and a gradual transition to shallow marine conditions is ob- served ca. 3200-3000 cal. BC due to the general context of deltaic progradation west of the ancient city. Subsequently, from ca. 3000 to 2000 cal. BC, a lagoon occupied the area in the vicinity of the Temple of Apollo and the settlement's development was restricted to several fluvio-deltaic levees, thus severely limiting human activities in the plain. From ca. 2000 to 800 cal. BC, a phase of shallow marine presence prevailed and constrained settlement on higher ground, forcing abandonment of the major part of the plain. Finally, since the eighth century BC, the sea has regressed southward and created the modern landscape.

Marià Vallès i Vallès, arxiver de la Diputació de Barcelona (1893-1919)

Des de la creació de l’Arxiu (1820) ha evolucionat el tractament dels seus fons. Segons els Reglaments (1822, 1879) els oficials descrivien els expedients, el registrador resseguia el tràmit, i l’arxiver controlava amb un registre la ubicació dels lligalls. Esteve (1836) inventarià la documentació antiga, estructurada en seccions per Quintana. Solà (1854), seguit per Rancés, classificà per negociats i matèries i millorà la descripció dels lligalls. Vallès confeccionà un Registre-inventari que descriu cronològicament per negociats i matèries tots els fons. També inventarià col•leccions i fons afegits, que la Mancomunitat destinà a l’IEC, la Biblioteca de Catalunya i els Museus d’Art. Paraules clau: Història d’arxius, arxivística catalana, arxivers catalans, Marià Vallès, Vallès i Vallès, arxiu, Diputació, Mancomunitat, Jacint Verdaguer, Prat de la Riba

Electrical signature of modern and ancient tectonic processes in the crust of the Atlas mountains of Morocco.

The Atlas Mountains in Morocco are considered as type examples of intracontinental chains, with high topography that contrasts with moderate crustal shortening and thickening. Whereas recent geological studies and geodynamic modeling have suggested the existence of dynamic topography to explain this apparent contradiction, there is a lack of modern geophysical data at the crustal scale to corroborate this hypothesis. Newly-acquired magnetotelluric data image the electrical resistivity distribution of the crust from the Middle Atlas to the Anti-Atlas, crossing the tabular Moulouya Plain and the High Atlas. All the units show different and unique electrical signatures throughout the crust reflecting the tectonic history of development of each one. In the upper crust electrical resistivity values may be associated to sediment sequences in the Moulouya and Anti-Atlas and to crustal scale fault systems in the High Atlas developed during the Cenozoic times. In the lower crust the low resistivity anomaly found below the Mouluya plain, together with other geophysical (low velocity anomaly, lack of earthquakes and minimum Bouguer anomaly) and geochemical (Neogene-Quaternary intraplate alkaline volcanic fields) evidence, infer the existence of a small degree of partial melt at the base of the lower crust. The low resistivity anomaly found below the Anti-Atlas may be associated with a relict subduction of Precambrian oceanic sediments, or to precipitated minerals during the release of fluids from the mantle during the accretion of the Anti-Atlas to the West African Supercontinent during the Panafrican orogeny ca. 685 Ma).