2011
DOI: 10.1016/j.gexplo.2011.06.004
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Hydrothermal alteration in andesitic volcanoes: Trace element redistribution in active and ancient hydrothermal systems of Guadeloupe (Lesser Antilles)

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Cited by 55 publications
(68 citation statements)
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“…These breccias are the first surficial evidences of high-temperature hydrothermal activity in this area regardless of the enigmatic occurrence of talc mentioned by Salaun et al [2011] at La Soufrière volcano. With our present knowledge, the K-feldspar + quartz paragenesis might be attributed to either surficial boiling of near neutral meteoric fluids (low-sulfidation epithermal veins) or to boiling of highly saline fluids escaped from shallow intrusions (potassic alteration).…”
Section: Discussionmentioning
confidence: 71%
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“…These breccias are the first surficial evidences of high-temperature hydrothermal activity in this area regardless of the enigmatic occurrence of talc mentioned by Salaun et al [2011] at La Soufrière volcano. With our present knowledge, the K-feldspar + quartz paragenesis might be attributed to either surficial boiling of near neutral meteoric fluids (low-sulfidation epithermal veins) or to boiling of highly saline fluids escaped from shallow intrusions (potassic alteration).…”
Section: Discussionmentioning
confidence: 71%
“…Indeed, the hydrothermal alteration of the surficial part of the geothermal field consists of dioctahedral smectites, zeolites and calcite [Patrier et al, 2003] and the volcanogenic rocks crosscut in depth by the exploration drill holes display a wide zone of propylitic alteration (chlorite, Ca-silicates, quartz and minor calcite) locally overprinted by phyllic (in the reservoir) to argillic (in the caprock) alteration assemblages (smectite, illite ± I-S mixed layers, quartz, calcite, hematite or pyrite) close to the faults and fractures that controlled the circulation of geothermal fluids [Mas et al, 2006]. By contrast, the hydrothermal alterations described at La Soufrière volcano are typical of alterations by low-temperature acidic fluids (smectite + silica polymorphs ± pyrite/jarosite ± gypsum) [Salaun et al, 2011].…”
Section: Discussionmentioning
confidence: 99%
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“…1998; Stimac et al 2004;Rouwet et al 2004Rouwet et al , 2008Rouwet et al , 2014, and/or hydrothermal alteration (Getahun et al 1996;Gehring et al 1999;Salaün et al 2011). Volcano-hydrothermal systems seem to develop more frequently in closed-conduit dome complexes and calderas (e.g.…”
Section: Non-magmatic Hydrothermal Unrestmentioning
confidence: 99%