NissirosV1, Main, Exploration, bibRecord, 000358

Geochemistry of thermal fluids on the volcanic isle of Pantelleria, southern Italy

Identifieur interne : 000358 ( Main/Exploration ); précédent : 000357; suivant : 000359

Geochemistry of thermal fluids on the volcanic isle of Pantelleria, southern Italy

Auteurs : Vittorio Duchi [Italie] ; Maria Emanuela Campana [Italie] ; Angelo Minissale [Italie] ; Michael Thompson [États-Unis]

Source :

Applied Geochemistry [ 0883-2927 ] ; 1994.

RBID : ISTEX:D04FFED479F223F2C4724D94CE07429D7A62C6AA

English descriptors

Abstract

Abstract: Chemical analyses of thermal springs and gas emissions on the volcanic island of Pantelleria, southern Italy, suggest the presence, at depth, of a NaCl thermal aquifer near 100°C; 80–90% of the water in this aquifer is fed by rainfall and the remainder of the mixture is seawater. Chemical analyses of the gas emissions reveal that below this shallow aquifer, a deeper hydrothermal degassing system (150°C) may exist. Rising CO2 causes alterations of the upper aquifer host rocks (mostly pantellerites), favors formation of NaHCO3 type waters, and causes eventual rpecipitation of CaCO3 and coprecipitation of MgCO3 and silica. Comparison of the present chemical data with older data from the literature suggests that the shallow Pantelleria thermal aquifer has increased in salinity and decreased in temperature during the last 25 a. Both effects were apparently caused by increased flow of recent seawater into the system because of increased ground water abstraction in the northern part of the island.

Url:

https://api.istex.fr/document/D04FFED479F223F2C4724D94CE07429D7A62C6AA/fulltext/pdf

DOI: 10.1016/0883-2927(94)90004-3

Affiliations:

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Le document en format XML

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<author><name sortKey="Campana, Maria Emanuela" sort="Campana, Maria Emanuela" uniqKey="Campana M" first="Maria Emanuela" last="Campana">Maria Emanuela Campana</name>
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<author><name sortKey="Minissale, Angelo" sort="Minissale, Angelo" uniqKey="Minissale A" first="Angelo" last="Minissale">Angelo Minissale</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acta</term>
<term>Amorphous silica</term>
<term>Analytical activity quotients</term>
<term>Aquifer</term>
<term>Average composition</term>
<term>Average crustal rock</term>
<term>Cala cottone</term>
<term>Caldera</term>
<term>Carbon dioxide</term>
<term>Cation</term>
<term>Chemical composition</term>
<term>Chemical equilibria</term>
<term>Cinque denti</term>
<term>Cold water</term>
<term>Condensate</term>
<term>Duchi</term>
<term>Eruptive</term>
<term>Favara</term>
<term>Formation waters</term>
<term>Fournier</term>
<term>Full equilibrium</term>
<term>Full equilibrium line</term>
<term>Gadir</term>
<term>Geochemical techniques</term>
<term>Geochim</term>
<term>Geol</term>
<term>Geothermal</term>
<term>Geothermal exploration</term>
<term>Geothermal resources</term>
<term>Geothermal systems</term>
<term>Geothermics</term>
<term>Geothermometer</term>
<term>Geothermometer equations</term>
<term>Greater inflow</term>
<term>High permeability</term>
<term>Higher temperature</term>
<term>Highest temperature</term>
<term>Hydrothermal</term>
<term>Hydrothermal fluids</term>
<term>Lago</term>
<term>Lago specchio</term>
<term>Lago venere</term>
<term>Lake sediments</term>
<term>Lava</term>
<term>Lava flows</term>
<term>Menlo park</term>
<term>Montagna grande</term>
<term>Nika</term>
<term>Northern part</term>
<term>Other chemical species</term>
<term>Pantelleria</term>
<term>Pantelleria island</term>
<term>Pantelleria waters</term>
<term>Present study</term>
<term>Salinity</term>
<term>Scauri</term>
<term>Schoeller diagram</term>
<term>Seawater</term>
<term>Seawater fraction</term>
<term>Sedimentary basins</term>
<term>Shallow aquifer</term>
<term>Shallow pantelleria</term>
<term>Silica</term>
<term>Southern italy</term>
<term>Specchio</term>
<term>Steam condensates</term>
<term>Ternary diagram</term>
<term>Thermal aquifer</term>
<term>Thermal fluids</term>
<term>Thermal springs</term>
<term>Thermal waters</term>
<term>Venere</term>
<term>Volcanic island</term>
<term>Water samples</term>
<term>Waters plot</term>
<term>Younger caldera</term>
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<term>Amorphous silica</term>
<term>Analytical activity quotients</term>
<term>Aquifer</term>
<term>Average composition</term>
<term>Average crustal rock</term>
<term>Cala cottone</term>
<term>Caldera</term>
<term>Carbon dioxide</term>
<term>Cation</term>
<term>Chemical composition</term>
<term>Chemical equilibria</term>
<term>Cinque denti</term>
<term>Cold water</term>
<term>Condensate</term>
<term>Duchi</term>
<term>Eruptive</term>
<term>Favara</term>
<term>Formation waters</term>
<term>Fournier</term>
<term>Full equilibrium</term>
<term>Full equilibrium line</term>
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<term>Geochemical techniques</term>
<term>Geochim</term>
<term>Geol</term>
<term>Geothermal</term>
<term>Geothermal exploration</term>
<term>Geothermal resources</term>
<term>Geothermal systems</term>
<term>Geothermics</term>
<term>Geothermometer</term>
<term>Geothermometer equations</term>
<term>Greater inflow</term>
<term>High permeability</term>
<term>Higher temperature</term>
<term>Highest temperature</term>
<term>Hydrothermal</term>
<term>Hydrothermal fluids</term>
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<term>Lago specchio</term>
<term>Lago venere</term>
<term>Lake sediments</term>
<term>Lava</term>
<term>Lava flows</term>
<term>Menlo park</term>
<term>Montagna grande</term>
<term>Nika</term>
<term>Northern part</term>
<term>Other chemical species</term>
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<term>Pantelleria island</term>
<term>Pantelleria waters</term>
<term>Present study</term>
<term>Salinity</term>
<term>Scauri</term>
<term>Schoeller diagram</term>
<term>Seawater</term>
<term>Seawater fraction</term>
<term>Sedimentary basins</term>
<term>Shallow aquifer</term>
<term>Shallow pantelleria</term>
<term>Silica</term>
<term>Southern italy</term>
<term>Specchio</term>
<term>Steam condensates</term>
<term>Ternary diagram</term>
<term>Thermal aquifer</term>
<term>Thermal fluids</term>
<term>Thermal springs</term>
<term>Thermal waters</term>
<term>Venere</term>
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<term>Water samples</term>
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<front><div type="abstract" xml:lang="en">Abstract: Chemical analyses of thermal springs and gas emissions on the volcanic island of Pantelleria, southern Italy, suggest the presence, at depth, of a NaCl thermal aquifer near 100°C; 80–90% of the water in this aquifer is fed by rainfall and the remainder of the mixture is seawater. Chemical analyses of the gas emissions reveal that below this shallow aquifer, a deeper hydrothermal degassing system (150°C) may exist. Rising CO2 causes alterations of the upper aquifer host rocks (mostly pantellerites), favors formation of NaHCO3 type waters, and causes eventual rpecipitation of CaCO3 and coprecipitation of MgCO3 and silica. Comparison of the present chemical data with older data from the literature suggests that the shallow Pantelleria thermal aquifer has increased in salinity and decreased in temperature during the last 25 a. Both effects were apparently caused by increased flow of recent seawater into the system because of increased ground water abstraction in the northern part of the island.</div>
</front>
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<li>États-Unis</li>
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<tree><country name="Italie"><noRegion><name sortKey="Duchi, Vittorio" sort="Duchi, Vittorio" uniqKey="Duchi V" first="Vittorio" last="Duchi">Vittorio Duchi</name>
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<name sortKey="Campana, Maria Emanuela" sort="Campana, Maria Emanuela" uniqKey="Campana M" first="Maria Emanuela" last="Campana">Maria Emanuela Campana</name>
<name sortKey="Minissale, Angelo" sort="Minissale, Angelo" uniqKey="Minissale A" first="Angelo" last="Minissale">Angelo Minissale</name>
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<country name="États-Unis"><region name="Californie"><name sortKey="Thompson, Michael" sort="Thompson, Michael" uniqKey="Thompson M" first="Michael" last="Thompson">Michael Thompson</name>
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Geochemistry of thermal fluids on the volcanic isle of Pantelleria, southern Italy

Geochemistry of thermal fluids on the volcanic isle of Pantelleria, southern Italy

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri