Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/11340
DC Field | Value | Language |
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dc.date.accessioned | 2018-03-21T08:42:21Z | en |
dc.date.available | 2018-03-21T08:42:21Z | en |
dc.date.issued | 2015-04 | en |
dc.identifier.isbn | 978-3-642-36833-2 | en |
dc.identifier.uri | http://hdl.handle.net/2122/11340 | en |
dc.description.abstract | Tacaná hosts an active volcano-hydrothermal system, characterized by boiling temperature fumaroles, near the summit (3,600–3,800 m asl), and bubbling degassing thermal springs near its base (1,000–2,000 m asl). The magmatic signature of gases rising to the surface is attested by their high CO2 contents (δ13CCO2 = −3.6 ± 1.3 ‰), and relatively high 3He/4He ratios (6.0 ± 0.9 RA), with a CO2/3He ratio typical for the Central American Arc (2.3 × 1010–6.9 × 1011). Such magmatic signature is practically identical for the near-summit fumaroles, and the bubbling gases at the base of Tacaná edifice. Besides the HCO3-enrichment in thermal spring waters, the springs (pH 5.8–6.7) show a SO4-and minor Cl-enrichment: a CO2 and H2S + SO2- rich magmatic steam condenses into a deeper geothermal aquifer, and the resulting hydrothermal fluid mixes with meteoric waters near the surface. The recharge area for the thermal springs is located at higher elevations (>400 m higher than spring outlet elevation), as inferred from the δD-δ18O data for rivers, thermal and cold springs. These general insights of the Tacaná volcano-hydrothermal system serve as the baseline for future volcanic surveillance, and geothermal prospection. The main locus of hydrothermal activity is located inside the Tacaná horseshoe-shaped crater in the northwestern sector of the volcanic edifice. In terms of volcanic hazard, this sector can be considered the most probable site for future phreatic activity. | en |
dc.language.iso | English | en |
dc.relation.ispartof | Active Volcanoes of Chiapas (Mexico): El Chichón and Tacaná | en |
dc.title | Fluid Geochemistry of Tacaná Volcano-Hydrothermal System | en |
dc.type | book chapter | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 139-154 | en |
dc.description.obiettivoSpecifico | 4V. Dinamica dei processi pre-eruttivi | en |
dc.contributor.author | Rouwet, Dmitri | en |
dc.contributor.author | Taran, Yuri | en |
dc.contributor.author | Inguaggiato, Salvatore | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia | en |
dc.contributor.department | Instituto de Geofísica, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito Exterior s/n, Copilco, Del, Coyoacán, 04510, México DF, Mexico | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | en |
item.openairetype | book chapter | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia | - |
crisitem.author.dept | Institute of Geophysics, Universidad Nacional Autonoma de Mexico, Ciudad Universitario, Del. Coyocan, 04510 Mexico, DF, Mexico | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | - |
crisitem.author.orcid | 0000-0003-3366-3882 | - |
crisitem.author.orcid | 0000-0003-3390-4316 | - |
crisitem.author.orcid | 0000-0003-3726-9946 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Book chapters |
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Rouwet Tacana AVotW 2015.pdf | 1.06 MB | Adobe PDF |
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