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Former hunting lodge of the , this villa of Capri has an amazing suite on the top floor that overlooks the entire Gulf. Possibly, the Pisciarelli waters are mixtures of evaporated local 4. Waters from Stufe Nerone and Terme Puteolane were analysed both in the present study and in Cortecci et al. Acidity in the Hotel Tennis waters is neutralized by reaction with rocks. Data points are compared with seawater sulfate d 34 S of q See text for deviating points on left.

Positions of Hotel Tennis and Pisciarelli samples are explained as due to mixing between shallow meteoric water and magmatic fluids rich in hydrogen sulfide. Large time variations in individual manifestations may be observed for Stufe Nerone and Terme Puteolane. On this subject, the thermal waters appear to be undersaturated with respect to anhydrite. Therefore, we may imagine three sources of sulfate in these thermal springs and wells: sulfate with d 34 S s q3. At Pisciarelli and perhaps at Hotel Tennis the magmatic contribution is persistent.

The water d 18 O is y4. The alternative is that the water is largely meteoric and that the dissolved sulfate is basically derived from the dissolution of anhydrite with d 34 S similar to that of seawater sulfate.

Elenco abstracts

Waters from Agnano P. Further inspection of Fig. Lastly, a few words about waters from Terme Puteolane. Here, the high d 34 S of q These features, together with the position of data points in Fig. Afterwards, this interaction diminished or even disappeared, perhaps due to changes in the hydrologic feeding circuit, coupled with spa- G. To the contrary, the waters from Hotel Tennis and, particularly, from Pisciarelli likely represent shallow meteoric water that is persistently heated by and enriched in magmatic water and sulfur.

Conclusions Sulfate minerals and native sulfur around fumaroles at Solfatara and hot water pools at Pisciarelli are ultimately derive from supergenic oxidation of H 2 S with a mean d 34 S s y0. Deviations from the mean value are mainly ascribed to competing isotopic effects during redox processes possibly mediated by thermophilic bacteria. The total sulfur in an unaltered trachyte specimen from Pisciarelli has a d 34 S s q1.

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Waters from hot pools at Pisciarelli are chemically and isotopically distinct from those of thermal springs and wells elsewhere in the Campi Flegrei caldera. These features may be of interest for volcanic surveillance. Based on the NarClrTDS diagrams, waters from thermal springs and wells essentially appear to be mixtures, in different proportions, of diluted meteoric water and saline marine water. The marine end-member may be seawater from the bay of Pozzuoli which undergoes chemical and isotopic modifications due to both its interaction with host rocks and boiling processes at depth.

Interestingly, the origin of water and sulfate from the Hotel Tennis well seems to be very similar to that of Pisciarelli, i. In general, the influence of these gases on the sampled thermal waters from springs and wells is occasional, as at Terme Puteolane, depending on changes in the individual hydrologic circuits, coupled with a spatially heterogeneous flow of gases through the aquifer.

At Pisciarelli and perhaps Hotel Tennis the magmatic contribution is more persisting. Many thanks are due to Enrico Dinelli for his collaboration and assistance in drafting the manuscript. Patrick Allard and Costanzo Panichi reviewed the manuscript and made useful suggestions for improvement. Allard, P. Isotopic study of the origin of sulfur and carbon in Solfatara fumaroles, Campi Flegrei caldera. Antrodicchia, P. Geochemical temperatures of the thermal waters of Phlegrean Fields, Naples, Italy.

Transactions 9, — Baldi, P. Geothermal research in western Campania, southern Italy: chemical and isotopic studies of thermal fluids in the Campi Flegrei. In: Proc. Bolognesi, L. Isotopic variations of the hydrothermal system on Vulcano Island, Italy. Acta 57, — Bruni, P. Risultati geologici G.

Cameli, G. Geothermal research in western Campania, southern Italy: geological and geophysical results. Caprarelli, G. PhD Thesis, University of Rome. Chemical and isotopic signatures of the basement rocks from the Campi Flegrei geothermal field, Naples, southern Italy: inferences about the origin and evolution of its hydrothermal fluids. Celico, P. Idrogeologia ed idrogeochimica dei Campi Flegrei: relazioni tra chimismo delle acque e idrodinamica sotterranea.

Atti Convegno Bradisismo e fenomeni connessi, Napoli, pp. Giovani Ricercatori in Geol. Geochemical monitoring of the thermal fluids in the Phlegrean Fields from to Chambers, L. Microbiological fractionation of stable sulphur isotopes. A review and critique. Cioni, R. The gasrsteam ratio as indicator of heat transfer at the Solfatara fumaroles, Phlegrean Fields, Italy. Civita, M.

Memoria descrittiva della carta idrogeologica della Campania nord-occidentale. Atti II Conv. Acqua Sott. Cole, P. A facies interpretation of the eruption and emplacement mechanisms of the upper part of the Neapolitan Yellow Tuff, Campi Flegrei, southern Italy. Cortecci, G. Environmental isotopic study of the Campi Flegrei, Naples, Italy, geothermal field. Corniello, Nicotera, Crovisier, J. Dissolution of basaltic glass in seawater: mechanism and rate. Acta 51, — CNR 83, — Some observation on the chemical classification of ground waters. Geothermics 12, — Le alterazioni ad opera di fluidi termali alla Solfatara di Pozzuoli, Napoli: mineralogia e geochimica.

Puteoli e Pompei nel I secolo d. In un volume ricco di riferimenti storiografici e fotografici, assistiamo alla rievocazione della vita, dei luoghi di aggregazione, degli usi e dei costumi di Puteoli e Pompei, tramite cui si incroceranno le vicende dell'impero romano fino al 24 agosto del 79 d. About this Item: Volume in ottime condizioni. Franco di Mauro Editore, Pagine: Illustrazioni monocrome.

Condition: Used: Very Good. From: Librairie Scritti Paris, France. About this Item: S. Couverture souple. Condition: Bon. Naples, S. In 8 de 59pp.

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    Guide Nerone nei campi flegrei (Italian Edition)

    Cenni geofisici sui Campi Flegrei. Il bradisismo e le varie teorie. Il bradisismo dei secoli. Il ruolo delle acque in relazione alle strutture geologiche sottomarine - intervento del Prof. L'energia geotermica e le masse magmatiche - intervento del Prof. I moti lenti del suolo, rapportati agli enenti del - intervento dei Proff.

    Campi Flegrei

    Oliveri del Castillo e M. Ricerca e sorveglianza. Intervento del'on.