Guallatiri (18°25’S, 69°05’W; 6,073 m a.s.l.) is a remote volcano located in the Central Andean Volcanic Zone (CAVZ; [Thorpe et al 1982]), which is a 1500 m-volcanic chain extending from south of Peru, west of Bolivia and northern Chile. Guallatiri volcano is considered as the second most active volcano in the north of Chile (after Lascar volcano; [Sernageomin 2015]), however little information about it has been recorded. Furthermore, geological evidence (recent pyroclastic deposits in Guallatiri village), recent eruptive events (e.g. small explosions and phreatic eruptions in 1913, 1959 and 1960; [Casertano 1963]) and increases and variations in the fumarolic activity (e.g December, 1985; [González-Ferrán 1995; Global Volcanism Program 2013]) suggest the presence of an active volcanic system, potentially dangerous in face of a new eruptive unrest. Likewise, a possible reactivation of the volcano might cause the melting of the thick glacial cap on the summit area (over ~5800 m a.s.l.), being able to generate devastating laharic flows. Despite those antecedents, few information is available about its geological evolution [e.g. García et al 2004; Sepúlveda 2018] and seismic activity (e.g. reports of volcanic activity from Sernageomin, Chile). Moreover, chemical and isotopic composition of fluid discharges is unknown. This work presents the first chemical and isotopical study of fumarolic gases and fluid discharges from cold and thermal springs around the Guallatiri volcano. The aim of this work is to determine the origin and evolution of fluid discharges from the Guallatiri volcano.
Preliminary study on the geochemistry of fluid discharges from Guallatiri volcano (northern Chile) / Inostroza M., Tassi F., Aguilera F., Sepúlveda J., Capecchiacci F., Venturi S., Capasso G.. - ELETTRONICO. - (2019), pp. 0-0. ( International Conference on Gas Geochemistry 2019 – ICGG15).
Preliminary study on the geochemistry of fluid discharges from Guallatiri volcano (northern Chile)
Tassi F.;Capecchiacci F.;Venturi S.;
2019
Abstract
Guallatiri (18°25’S, 69°05’W; 6,073 m a.s.l.) is a remote volcano located in the Central Andean Volcanic Zone (CAVZ; [Thorpe et al 1982]), which is a 1500 m-volcanic chain extending from south of Peru, west of Bolivia and northern Chile. Guallatiri volcano is considered as the second most active volcano in the north of Chile (after Lascar volcano; [Sernageomin 2015]), however little information about it has been recorded. Furthermore, geological evidence (recent pyroclastic deposits in Guallatiri village), recent eruptive events (e.g. small explosions and phreatic eruptions in 1913, 1959 and 1960; [Casertano 1963]) and increases and variations in the fumarolic activity (e.g December, 1985; [González-Ferrán 1995; Global Volcanism Program 2013]) suggest the presence of an active volcanic system, potentially dangerous in face of a new eruptive unrest. Likewise, a possible reactivation of the volcano might cause the melting of the thick glacial cap on the summit area (over ~5800 m a.s.l.), being able to generate devastating laharic flows. Despite those antecedents, few information is available about its geological evolution [e.g. García et al 2004; Sepúlveda 2018] and seismic activity (e.g. reports of volcanic activity from Sernageomin, Chile). Moreover, chemical and isotopic composition of fluid discharges is unknown. This work presents the first chemical and isotopical study of fumarolic gases and fluid discharges from cold and thermal springs around the Guallatiri volcano. The aim of this work is to determine the origin and evolution of fluid discharges from the Guallatiri volcano.
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