Total CO2 Output and Carbon Origin Discharged from Rincón De Parangueo Maar (México)
Journal of Geochemical Exploration 215 (2020) 106558 Contents lists available at ScienceDirect Journal of Geochemical Exploration journal homepage: www.elsevier.com/locate/gexplo Total CO2 output and carbon origin discharged from Rincón de Parangueo Maar (México) T ⁎ Mariana Patricia Jácome Paza, , Claudio Inguaggiatob, Gilles Levressec, Philippe Robidouxd, Hugo Delgado Granadosa, Franco Tassie a Instituto de Geofísica, Universidad Nacional Autónoma de México, UNAM, Circuito Exterior s/n, Ciudad Universitaria, Delegación Coyoacán, C.P. 04510 Ciudad de México, Mexico b Departamento de Geología, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Carretera Ensenada-Tijuana 3918, Ensenada, Baja California, Mexico c Centro de Geociencias, Universidad Nacional Autónoma de México, UNAM, Blvd. Juriquilla 3001, Juriquilla La Mesa, 76230 Juriquilla, Querétaro, Mexico d Centro de Excelencia en Geotermia de Los Andes - Plaza Ercilla, Santiago, Chile e Scienze della Terra, Universitá di Firenze, Via La Pira, 4, 50121 Firenze, Italy ABSTRACT A geochemical survey was carried out (May 2016) in the Rincón de Parangueo maar in Valle de Santiago, México. The challenge was to measure CO2 and CH4 fluxes discharged from soil and to investigate the chemical and isotopic compositions of interstitial soil gases and remaining vents at the bottom of maars system subjected −1 −1 to critical and high rate drawdown aquifer. Total CO2 flux calculated by sequential Gaussian simulation is 10.6 ton d ( ± 2.1 ton d ) over the entire crater maar − − area. Two degassing groups were recognized: Group A (background degassing) with values lower than 10 g m 2 d 1 (40% of the total measurements) and Group B −2 −1 −2 −1 with values ranging between 10 and 347.1 g m d (60% of the total amount of measurements).
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