2010
DOI: 10.1016/j.geothermics.2010.03.002
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Hydrothermal alteration of Hercynian granites, its significance to the evolution of geothermal systems in granitic rocks

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Cited by 20 publications
(26 citation statements)
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“…In the Chaves region, the ascending low-temperature CO 2 -rich geothermal waters are structurally controlled by the so-called Verin-Régua-Penacova fault zone (VRPFZ - Figure 2) [40,41,46], related to Alpine Orogeny, which trends 70°-80°E and is hydrothermally active along a belt extending 150 km through mainland Portugal (Figure 3). Along this tectonic megalineament lie not only the Chaves low-temperature CO 2 -rich geothermal waters (the only geothermal waters in the study region) but also numerous emanations of cold (17°C) CO 2 -rich mineral waters (e.g., Vilarelho da Raia, Vidago, and Pedras Salgadas), with no signs of a geothermal origin as discussed in detail by [27][28][29][30][31][32][33][34][35][36][37][38], which are used in local spas (see Figures 2 and 3).…”
Section: Geofluidsmentioning
confidence: 99%
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“…In the Chaves region, the ascending low-temperature CO 2 -rich geothermal waters are structurally controlled by the so-called Verin-Régua-Penacova fault zone (VRPFZ - Figure 2) [40,41,46], related to Alpine Orogeny, which trends 70°-80°E and is hydrothermally active along a belt extending 150 km through mainland Portugal (Figure 3). Along this tectonic megalineament lie not only the Chaves low-temperature CO 2 -rich geothermal waters (the only geothermal waters in the study region) but also numerous emanations of cold (17°C) CO 2 -rich mineral waters (e.g., Vilarelho da Raia, Vidago, and Pedras Salgadas), with no signs of a geothermal origin as discussed in detail by [27][28][29][30][31][32][33][34][35][36][37][38], which are used in local spas (see Figures 2 and 3).…”
Section: Geofluidsmentioning
confidence: 99%
“…Concerning water-rock interaction studies, thin sections of drill cores from Vilarelho da Raia AC2 borehole were studied in detail, at LAMPIST, to characterize their 13 Geofluids mineralogical composition and textural relations (see [37]). Sample preparation for isotopic analysis on granitic rocks and silicate minerals is referred in detail in [37].…”
Section: Geofluidsmentioning
confidence: 99%
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“…The study of thermal behavior of rocks at high temperatures is of great importance, as heating and cooling processes are relevant to their performance in geotechnical and engineering applications, such as radioactive waste storage (Liu et al, 2009;Yamamoto et al, 2013) and geothermal energy (Bartier et al, 2008;Marques et al, 2010). The effect of high temperatures is also essential when considering fire damage, both in forest fires or in the context of building stone.…”
Section: Introductionmentioning
confidence: 99%
“…Hydrothermally altered rocks have been extensively studied 3 especially in the context of ore formation, metal enrichment, and mineralization (Aiuppa et al, 2006;Allen and Hahn, 1994;Franzson et al, 2008;Halbach et al, 1993;Horton et al, 2001;Huston et al, 1995;Marques et al, 2010;Martin-Crespo et al, 2004;Ostwald and England, 1977;Pokrovski et al, 2007), but very few have investigated the potential leaching of toxic elements from these rocks when exposed to the environment.…”
Section: Introductionmentioning
confidence: 99%