Chemical relationship between discharging fluids in the Siena-Radicofani graben and the deep fluids produced by the geothermal fields of Mt Amiata, Torre Alfina and Latera (Central Italy)

Duchi, Vittorio; Minissale, A.; Paolieri, Mario; Prati, Franco; Valori, Aldo

doi:10.1016/0375-6505(92)90089-r

Cited by 47 publications

(20 citation statements)

References 16 publications

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“…Now inactive for over 0.16 Ma (Vezzoli et al, 1987), this volcanic structure still has an extremely high geothermal gradient, and it is believed that associated thermo-metamorphic reactions in carbonate rocks are the source of the large quantities of deep CO2 and other trace gases that are released to the atmosphere from various discrete gas vents throughout the valley (Duchi et al, 1992). A detailed treatment of the geology and structure of the Latera caldera, as well as a discussion of gas migration along faults in the area, is given by Annunziatellis et al (2008).…”

Section: Geology and Site Descriptionmentioning

confidence: 99%

The impact of a naturally occurring CO2 gas vent on the shallow ecosystem and soil chemistry of a Mediterranean pasture (Latera, Italy)

Beaubien

Ciotoli

Coombs

et al. 2008

International Journal of Greenhouse Gas Control

134

109

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Recent research into C02 geological storage has shown that it has potential to be a safe and effective way to rapidly decrease short-term anthropogenic C02 emissions. Despite this progress, stakeholders must be convinced that the scientific community has studied all possible scenarios, including a potential leak into the biosphere. To better understand the potential impact of such an event, a detailed geochemical and biological study was conducted during two different seasons on a naturally occurring gas vent located within a Mediterranean pasture ecosystem (Latera geothermal field, central Italy). Results from botanical, soil gas, and gas flux surveys, and from chemical and biological analyses of shallow soil samples (0-20 cm depth), show that a significant impact is only observed in the 6 In wide centre of the vent, where C02 flux rates exceed 2000-3000 g M-2 d-1. In this "vent core" there is no vegetation, pH is low (minimum 3.5), and small changes are observed in mineralogy and bulk chemistry. in addition, microbial activities and populations are regulated in this interval by near-anoxic conditions, and by elevated soil gas C02 (>95%) and trace reduced gases (CH4, H2S, and 142). An approximately 20 In wide halo surrounding the core forms a transition zone, over which there is a gradual decrease in C02 concentrations, a rapid decrease in C02 fluxes, and the absence of reactive gas species. In this transition zone grasses dominate near the vent core, but these are progressively replaced by clover and a greater plant diversity moving away from the vent centre. Physical parameters (e.g. pH, bulk chemistry, mineralogy) and microbial systems also gradually return to background values across this transition zone. Results indicate that, even at this anomalous high-flux site, the effects ofthe gas vent are spatially limited and that the ecosystem appears to have adapted to the different conditions through species substitution or adaptation. (c) 2008 Elsevier Ltd. All rights reserved

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Section: Geology and Site Descriptionmentioning

confidence: 99%

The impact of a naturally occurring CO2 gas vent on the shallow ecosystem and soil chemistry of a Mediterranean pasture (Latera, Italy)

Beaubien

Ciotoli

Coombs

et al. 2008

International Journal of Greenhouse Gas Control

134

109

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“…The geothermal systems of southern Tuscany mainly consist of two main reservoirs occurring at shallow crustal levels. The deeper reservoir (T of 300-350 °C, depth 1000-3000 m) is hosted in metamorphic rocks, while the shallower reservoir (T lower than 200 °C, depth 500-1000 m) is hosted mainly in carbonate rocks (Duchi et al 1992;Batini et al 2003). Travertine deposits are the surface manifestation of hydrothermal fluid circulation within the carbonate reservoirs (Brogi et al 2015 and reference therein) and are widely distributed in southern Tuscany and northern Latium (Minissale 2004, Brogi et al 2010aCapezzuoli et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Investigating fossil hydrothermal systems by means of fluid inclusions and stable isotopes in banded travertine: an example from Castelnuovo dell’Abate (southern Tuscany, Italy)

Rimondi

Costagliola

Ruggieri

et al. 2015

Int J Earth Sci (Geol Rundsch)

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“…The chemical composition of these waters tends to a [Na, K]-HCO 3 composition (type 3) due to the contemporary presence of CO 2 and clay material for a process of Ca-Na ion exchange (Duchi, Minissale, Paolieri, Prati, & Valori, 1992). This type of groundwater often includes high K and SiO 2 concentrations correlated to the RCP from southern Tuscany to Campania.…”

Section: Hydrochemical Facies and Their Spatial Distributionmentioning

confidence: 99%

Distribution and physico-chemical data of Italian bottled natural mineral waters

Ciotoli

Guerra

2015

Journal of Maps

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In recent years, the consumption of bottled natural mineral water (BNMWs) has grown enormously in Italy. This trend and the importance of the market were supported by the proliferation of brands with very different physico-chemical properties, and related to very different geological scenarios. In this paper, label data of more than 400 BNMWs are reviewed by using graphical and geospatial analyses in order to relate their hydrochemical characterization to geographical distribution. For this purpose, a large geodatabase covering the Italian peninsula was constructed, including geographical, geochemical and lithological data. A graphical classification based on hydrochemical characteristics, as well as distribution maps of some physical parameters were also reported. The results were evaluated within the context of the geological scenarios that control groundwater evolution. This information may be used by experts for both an evaluation of the potential market demand, and for health care use. ARTICLE HISTORY

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Chemical relationship between discharging fluids in the Siena-Radicofani graben and the deep fluids produced by the geothermal fields of Mt Amiata, Torre Alfina and Latera (Central Italy)

Cited by 47 publications

References 16 publications

The impact of a naturally occurring CO2 gas vent on the shallow ecosystem and soil chemistry of a Mediterranean pasture (Latera, Italy)

The impact of a naturally occurring CO2 gas vent on the shallow ecosystem and soil chemistry of a Mediterranean pasture (Latera, Italy)

Investigating fossil hydrothermal systems by means of fluid inclusions and stable isotopes in banded travertine: an example from Castelnuovo dell’Abate (southern Tuscany, Italy)

Distribution and physico-chemical data of Italian bottled natural mineral waters

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