Water–rock interaction in the active geothermal system of Pantelleria, Italy

Gianelli, Giovanni; Grassi, S.

doi:10.1016/s0009-2541(01)00276-5

Cited by 34 publications

(20 citation statements)

References 25 publications

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“…Finally, in 1993 other two exploitation pits have been dug (PPT1 and PPT2) in order to verify the real temperatures at greater depth (about 1100 m), obtain data about the geological structure in the subsoil and evaluate the geothermal resource. Table 3 reports the main data about the geothermal resource in PPT1 [44,45]. Using the assumptions reported in Table 4, we evaluate the installation of a condensing steam power plant by geothermal source in the southern part of the island (PPT1 in the Figure 14), having a nominal power of 500 kW.…”

Section: Geothermal Sourcementioning

confidence: 99%

Sustainability of the Renewable Energy Extraction Close to the Mediterranean Islands

Franzitta

Curto

2017

Energies

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Abstract:The aim of this work is to explore the possibility of transitioning a fuel powered island to a renewable powered one. This transition is analyzed for the real MV/LV distribution system of the island of Pantelleria, in the Mediterranean Sea. Particularly, this work is focused on a renewable source nowadays totally unused: wave energy. Thanks to the innovative generator prototype designed by Department of Energy of University of Palermo (Italy), wave energy is able to represent a primary source for the production of electric energy in the Mediterranean islands. The procedures applied in the present article, as well as the main equations used, are the result of previous applications made in different technical fields that show a good replicability.

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Section: Geothermal Sourcementioning

confidence: 99%

Sustainability of the Renewable Energy Extraction Close to the Mediterranean Islands

Franzitta

Curto

2017

Energies

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“…Calcium is mobile in hydrothermal fluids and in the absence of anhydrite precipitation (as is the case at Oki-Dōzen) may be depleted from the rock (Seyfried 1987;Gianelli and Grassi 2001;Fig. 4f).…”

Section: Hydrothermal Alteration Of the Central Complexmentioning

confidence: 99%

A trachyte–syenite core within a basaltic nest: filtering of primitive injections by a multi-stage magma plumbing system (Oki-Dōzen, south-west Japan)

Brenna

Nakada

Miura

et al. 2015

Contrib Mineral Petrol

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that distinguish it from the rest of the system. Geochemical modelling indicates that magmatic differentiation through crystal fractionation and minor crustal assimilation occurred in crustal and shallow sub-volcanic magma reservoirs. In the central part of the system, a number of vertically spaced reservoirs acted as a filter, capturing basaltic dykes and hindering their ascent. In the outer region, dykes either reached the surface unhindered and erupted to form the basaltic/trachybasaltic succession or stalled at crustal levels and differentiated to trachyte before forming dispersed domes/flows. The central plumbing system "filter" resulted in a nest-shaped volcano, with a trachytic core surrounded by basaltic products, and stopped direct injection of basaltic magmas into the shallow syenitic magma reservoir, likely preventing its destabilization and explosive eruption.

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“…163,2006 Chemical and Isotopic Composition 789 releasing Na from Na-rich volcanic rocks and removing Ca and Mg due to formation of secondary carbonate minerals (e.g. dolomite and aragonite) as supported by saturation indices (DUCHI et al, 1994;GIANNELLI and GRASSI, 2001). It is reasonable to think that carbon enrichment results from the dissolution of large amount of magmatic-derived CO 2 -gas in the water (CO 2aq , HCO 3 and CO 3 , depending on the activity of H + ).…”

Section: Na-cl Watersmentioning

confidence: 99%

Chemical and Isotopic Composition of Waters and Dissolved Gases in Some Thermal Springs of Sicily and Adjacent Volcanic Islands, Italy

Grassa

Capasso

Favara

et al. 2006

Pure appl. geophys.

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Hydrochemical (major and some minor constituents), stable isotope (dD H2O and d 18 O H2O ; d 13 C TDIC total dissolved inorganic carbon) and dissolved gas composition have been determined on 33 thermal discharges located throughout Sicily (Italy) and its adjacent islands. On the basis of major ion contents, four main water types have been distinguished: (1) a Na-Cl type; (2) a Ca-Mg > Na-SO 4 -Cl type; (3) a Ca-Mg-HCO 3 type and (4) a Na-HCO 3 type water. Most waters are meteoric in origin or resulting from mixing between meteoric water and heavy-isotope end members. In some samples, d 18 O values reflect the effects of equilibrium processes between thermal waters and rocks (positive 18 O-shift) or thermal waters and CO 2 (negative 18 O-shift). Dissolved gas composition indicates the occurrence of gas/ water interaction processes in thermal aquifers. N 2 /O 2 ratios higher than air-saturated water (ASW), suggest the presence of geochemical processes responsible for dissolved oxygen consumption. High CO 2 contents (more than 3000 cc/litre STP) dissolved in the thermal waters indicate the presence of an external source of carbon dioxide-rich gas. TDIC content and d 13 C TDIC show very large ranges from 4.6 to 145.3 mmol/Kg and from )10.0& and 2.8&, respectively. Calculated values indicate the significant contribution from a deep source of carbon dioxide inorganic in origin. Interaction with Mediterranean magmatic CO 2 characterized by heavier carbon isotope ratios (d 13 C CO2 value from )3 to 0& vs V-PDB (CAPASSO et al., 1997, GIAMMANCO et al., 1998INGUAGGIATO et al., 2000) with respect to MORB value and/ or input of CO 2 -derived from thermal decomposition of marine carbonates have been inferred.

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Water–rock interaction in the active geothermal system of Pantelleria, Italy

Cited by 34 publications

References 25 publications

Sustainability of the Renewable Energy Extraction Close to the Mediterranean Islands

Sustainability of the Renewable Energy Extraction Close to the Mediterranean Islands

A trachyte–syenite core within a basaltic nest: filtering of primitive injections by a multi-stage magma plumbing system (Oki-Dōzen, south-west Japan)

Chemical and Isotopic Composition of Waters and Dissolved Gases in Some Thermal Springs of Sicily and Adjacent Volcanic Islands, Italy

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