Serie estratigráfica de Liásico de la provincia de Girona

From several small stratigraphic sections, we have reconstituted the Liassic interval of the Girona Province (NE Spain). We have been able to identify paleontologically the Carixian (Jamesoni, Ibex, and perhaps, Davoei zones), the Lower Domerian (Stockesi zone), and the Middle Toarcian (possibily Variabilis zone, as well as Thouarsense and Insigne zones). The Lower Toarcian (Serpentinus zone) is represented by fossil remains no ‘in situ’. The lowest Toarcián (Tenuicos-tatum zone) as well as the Middle and Upper Domerian (Margaritatus and Spinatum zones respectively, are probably represented by stratigraphic gaps

Participació de les aigües subterrànies en la gènesi d'ambients palustres continentals: el cas dels prats de Sant Sebastià (Caldes de Malavella, Girona)

The area known as 'prats de Sant Sebastià' is in Caldes de Malavella. It is part of the wetlands located in the south-eastern end of the Selva Basin. Several areas with unusually high conductivity (EC up to 24,500 uS/cm) have been identified in this place. This fact allows highly specialised and comparatively rare botanical species to grow in this area. These saline soils follow a north-south line-up. The geophysical data, obtained with a field conductivemeter (EM 31), show that this superficial line-up continues in the subsoil. In addition to this, the conductivity cartography, made for an electromagnetic exploration depth of 6 meters, shows that the width of the region where these salinity anomalies take place increases in depth. When included in the hidrogeological context of this sector of the Selva Basin, these data bring new elements for the study of the genesis and working of these marshy environments.The model that future research will have to confirm, maintains that the groundwater discharges coming from the underlying hydrogeothermal aquifer are a conditioning factor of the aforementioned phenomenon. This ascending flow of highly mineralised waters (TDS of about 3,500 mg/l) can produce and keep stable the soil salinity

El paleozoic del massís de Begur (Girona)

The Paleozoic materials of Massís de Begur are described from a stratigraphical point of view. We distinguish two units: the lower one, present phillites with carbonate layers ofcambro-ordovician age. The upper one is composed by volcanic rocks, carbonate schistsand black slates, bring from caradocian and ashgillian age

El paleogen del massís de Begur (Girona)

Stratigraphic series concerning the paleogenic materials of the 'Massis de Begur' are described. We note the presence of some diferences between its northem and westem margins

Possibles materials amb destinació a obres portuàries a la Costa Brava (Girona)

The metodology used in the research of materials destinated to port constructions in the Costa Brava is described. This metodology follows a set of work steps. The first three allow to do a selection of the stone quarries that exist in the zone. The other steps consists in studing the materials and the characteristics of the chosen quarries and the zones closed to them, as to order them according to their utility in port constmctions. Finally, the main results obtained are explained

Oscil.lacions del nivell del mar i sediments associats durant l'Holocè a la Costa Brava Meridional (Girona)

Several marine deposits in the southern Costa Brava shoreline have been studied. They appear at different heights above and below the present sea level. Three groups are defined in relation to their origin: conglomerate levels at the bottom of the cliffs, not-cementedemerged beaches and cemented submerged beaches. The age of the emerged beaches has been accurately determined by means of the ceramic content and radiocarbon dating. Chronological succession of the deposits and their stratigraphic and paleontological characteristics allow to define a sequence of the sea level changes during the latest stages of the versiliane transgression in the studied area

Un punto de interés geológico singular : La Pedralta (Girona, Catalunya)

Descripció del bloc granític basculant, conegut amb el nom de 'Pedralta', situat entre els termes municipals de Santa Cristina d'Aro i Sant Feliu arrel de la seva caiguda per causes naturals, el 10 de desembre de 1996

Contribución al estudio morfolitológico del sector costero central del macizo de Begur (Girona)

This paper makes a contribution to the knowledge of the coastal fringe morphology of the ‘Macizo de Begur’. A lithological study, macro and microscopic, has been carried out of a variety of a series of metamorphic, plutonic, phyllonianic and effusive rocks

Un edifici volcànic inèdit a Caldes de Malavella (la Selva, Girona): el volcà del camp dels Ninots

Es descriu la morfologia i els dipòsits del volcà inèdit del camp dels Ninots (Caldes de Malavella)

Aplicación a la prospección geofísica electromagnética en la delimitación espacial de los depósitos travertínicos de la depresión de Banyoles (Girona)

Es presenten els resultats d'una campanya de prospecció geofísica electromagnètica amb l'objectiu de poder delimitar espaialment les formacions travertíniques quaternàries de la vall de Banyoles

Modelo deposicional de las formaciones travertínicas de la depresión de Banyoles (Girona)

Estudi de les formacions travertíniques que es troben al Pla de Banyoles

Dos nous afloraments volcànics a l'Alt Empordà (Girona)

Two unknown volcanic outcrops in the Alt Emporda (Girona) are described in this paper . We present their exact situation and a description of their occurrence and their mineralogical and petrological characteristics. Bothhave been classified as alkali-olivine basalts and they probably extruded during the Neogen period

La Crosa de Sant Dalmai: un ejemplo de Patrimonio Geológico de Girona

The main volcanic edifice of the Crosa de Sant Dalmai is the largest in the catalonian volcanic area. The crater is 1.300 m long and 74 m deep. At present it is protected by the "Pla d'Espais d'Interès Natural" of the Generalitat de Catalunya

Restoration of a lost geological reference point: the loggingstone of Pedralta (Girona, Spain)

The Pedralta is a loggingstone formed of monzonitic leucogranites, which has a volume of about 38 m3 and weighs 101 tons. After its fall in December 1996, a public subscription was opened to meet the expenses of the restoration work, which was completed in May 1999

Mid Holocene in Sant Julià de Boada (Baix Empordà, Girona): Stratigraphical sequence and paleoenvironmental records of the paludal deposits

Descripció de la seqüència estratigràfica i dels registres paleoambientals dels sediments holocens de Sant Julià de Boada