Gas emissions from five volcanoes in northern Chile and implications for the volatiles budget of the Central Volcanic Zone

2014/07/15 by Giancarlo Tamburello, Thor H. Hansteen, Stefan Bredemeyer +2 · 7 citations
Earth and Planetary Sciences · Computer Science · Environmental Science · #Geological and Geochemical Analysis #Geochemistry and Geologic Mapping #Atmospheric and Environmental Gas Dynamics #Volcano #Plume #Geology #Volcanic Gases #Geochemistry #Mineralogy #Meteorology #Geography

paper · pdf · doi:10.1002/2014gl060653

openalex publication_date 2014/07/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01

Abstract

Abstract This study performed the first assessment of the volcanic gas output from the Central Volcanic Zone (CVZ) of northern Chile. We present the fluxes and compositions of volcanic gases (H 2 O, CO 2 , H 2 , HCl, HF, and HBr) from five of the most actively degassing volcanoes in this region—Láscar, Lastarria, Putana, Ollagüe, and San Pedro—obtained during field campaigns in 2012 and 2013. The inferred gas plume compositions for Láscar and Lastarria (CO 2 /S tot = 0.9–2.2; S tot /HCl = 1.4–3.4) are similar to those obtained in the Southern Volcanic Zone of Chile, suggesting uniform magmatic gas fingerprint throughout the Chilean arc. Combining these compositions with our own UV spectroscopy measurements of the SO 2 output (summing to ~1800 t d −1 for the CVZ), we calculate a cumulative CO 2 output of 1743–1988 t d −1 and a total volatiles output of >20,200 t d −1 .

Citations

• Geochemical model of a magmatic–hydrothermal system at the Lastarria volcano, northern Chile
• The chemical composition of subducting sediment and its consequences for the crust and mantle
• Crustal contributions to arc magmatism in the Andes of Central Chile
• The 1984 to 1996 cyclic activity of Lascar Volcano, northern Chile: cycles of dome growth, dome subsidence, degassing and explosive eruptions
• A comparison of SO2 retrieval techniques using mini-UV spectrometers and ASTER imagery at Lascar volcano, Chile
• Origin of fumarolic fluids from Tupungatito Volcano (Central Chile): interplay between magmatic, hydrothermal, and shallow meteoric sources
• Lascar Volcano, Northern Chile; Evidence for Steady-State Disequilibrium
• The magmatic- and hydrothermal-dominated fumarolic system at the Active Crater of Lascar volcano, northern Chile

Cited by

• Gas and aerosol emissions from Lascar volcano (Northern Chile): Insights into the origin of gases and their links with the volcanic activity
• Processes culminating in the 2015 phreatic explosion at Lascar volcano, Chile, evidenced by multiparametric data
• Volcanic gas emissions and degassing dynamics at Ubinas and Sabancaya volcanoes; implications for the volatile budget of the central volcanic zone
• Fumarole [wikipedia]
• Ollagüe [wikipedia]
• San Pedro (Chile volcano) [wikipedia]
• Tacora [wikipedia]

Related

• Lascar Volcano, Northern Chile; Evidence for Steady-State Disequilibrium
• Processes culminating in the 2015 phreatic explosion at Lascar volcano, Chile, evidenced by multiparametric data
• Evolution of Lascar Volcano, Northern Chile
• Continuous gas sampling and analysis at the Pisciarelli fumarolic field (Campi Flegrei) by using a quadrupole mass spectrometer (QMS)
• SO2 emissions from Popocatépetl volcano : emission rates and plume imaging using optical remote sensing techniques