Temperature field simulation with stratification model of magma chamber under los humeros caldera, Puebla, Mexico

Thermal sensitivity analysis of emplacement of the magma chamber in Los Humeros caldera, Puebla, Mexico

“…Pérez-Reynoso 1979; Verma and Lopez 1982;Ferriz andMahood 1984, 1987;Ferriz 1985;Verma 1985a;Verma et al 1990;Andaverde et al 1993). The basement rocks are metamorphic and intrusive rocks of Palaeozoic age and are overlain by a Mesozoic folded sedimentary sequence, Tertiary granodiorite and syenite intrusive rocks, and Pliocene andesitic rocks.…”

“…The LHC has been studied from diverse disciplines: geology (Pérez-Reynoso 1979;Ferriz 1985), geochemistry (Verma and Lopez 1982;Verma 1983Verma , 1984Verma , 1985aVerma , 2000Ferriz 1985;Ferriz and Mahood 1987), geochronology (Ferriz and Mahood 1984), geophysics (Flores et al 1978;González-Morán and Suro-Pérez 1982;Campos-Enríquez and Arredondo-Fragoso 1992;Campos-Enríquez et al 2005), hydrothermal alteration (Arnold and González-Partida 1987;González-Partida et al 2001;Martínez-Serrano 2002; 19º10' Bienkowski et al 2005), thermophysical properties (Contreras et al 1990), geothermal well properties (Medina-Martínez 2000), reservoir studies (Tello-Hinojosa 1992), and thermal modelling (Prol and González-Morán 1982;Campos-Enríquez and Duran 1986;Verma et al 1990;Castillo-Román et al 1991 …”

“…The complexity of numerical models thus far developed to explain the evolution of a magma chamber has varied from non-dimensional models proposed for chemical modelling Spera 2001, 2003;Spera andBohrson 2001, 2002) to models that simulate the thermal regime in one dimension (1D; Giberti et al 1984aGiberti et al , 1984bGiberti and Sartoris 1989), two dimensions (2D; Prol and González-Morán 1982;Campos-Enríquez and Duran 1986;Giberti and Sartoris 1989;Verma et al 1990;Andaverde et al 1993;Verma and Andaverde 1996;Verma and Rodríguez-González 1997;Stimac et al 2001), or three dimensions (3D; Verma and Andaverde 2007). Several simulation studies have been carried out in Mexican geothermal fields: Los Humeros (Prol and González-Morán 1982;Campos-Enríquez and Duran 1986;Verma et al 1990;Castillo-Román et al 1991;Verma and Andaverde 2007), Los Azufres (Verma and Andaverde 1996), and La Primavera (Verma and Rodríguez-González 1997).…”

“…The most recent volcanic activity in the LHC is represented by olivine basaltic lava flows at about 0.02 Ma. The geologic section ( Figure 3) was constructed from the study of actual rocks encountered during well drilling operations (Verma et al 1990).…”

“…Such studies are also relevant for geothermal systems to constrain their useful lifespans. Petrogenetic and thermal modelling of magma chambers or intrusive bodies has been a subject of worldwide interest (Spera 1980;Spera et al 1982;Giberti et al 1984aGiberti et al , 1984bVerma 1985a;Tait 1988;Giberti and Sartoris 1989;Verma et al 1990;Castillo-Román et al 1991;Valentine 1992;Andaverde et al 1993;Andaverde 1996, 2007;Spera 2001, 2003;Spera andBohrson 2001, 2002;Stimac et al 2001;Valentine et al 2002). Only in one of these papers (Castillo-Román et al 1991) was the thermal regime determined from the cooling of a magma chamber emplaced at a depth of 4-6 km, but the effect of different chamber volumes was not evaluated.…”