An approach to reconstruct the thermal history in active magmatic systems: Implications for the Los Humeros volcanic complex, Mexico

Deb, Paromita; Giordano, Guido; Shi, Xiangyun; Lucci, Federico; Clauser, Christoph

doi:10.1016/j.geothermics.2021.102162

Cited by 10 publications

(6 citation statements)

References 96 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Postcaldera activity includes resurgence of the caldera floor (Urbani et al 2020, Bonini et al 2021) and scattered intracaldera monogenetic activity (Carrasco-Núñez et al 2018). The nested caldera is a currently exploited active geothermal system (93 MW installed), with local geothermal gradients greater than or equal to 150°C/km (Deb et al 2021). Early petrologic studies modeled the plumbing system as a single, chemically zoned (basalt-andesite-rhyolite), shallow magma chamber [5-10 km depth (Ferriz & Mahood 1987)], with an average rate of basalt input of 0.1 km 3 /kyr for the entire lifetime of the volcano.…”

Section: Unpacking Magma Reservoirs: the Example Of The Los Humeros C...mentioning

confidence: 99%

“…The volume of the magma chamber based on mass balance calculations was estimated to remain constant over the lifetime of the system at about 1,000-1,400 km 3 and was used to model the heat source for the geothermal system (Verma et al 2011). Recent studies have questioned the persistence of such a shallow magma chamber, as they were unable to explain the rapid drop of the geothermal gradient along the caldera floor away from the currently exploited geothermal field (Deb et al 2021). Thermobarometry of pyroxenes and plagioclase of LH postcaldera Holocene volcanic products, ranging in composition from olivine basalts to trachyte and rhyolite, allowed Lucci et al (2020) to reconstruct the transcrustal nature of the active plumbing system.…”

Section: Unpacking Magma Reservoirs: the Example Of The Los Humeros C...mentioning

confidence: 99%

“…Fast migration and accumulation of caldera-forming magma volumes from the deep to the shallow reservoirs were simulated within a thermally matured crust at rates between 0.06 and 0.03 km 3 /year followed by the instantaneous evacuation of caldera-forming ignimbrite volumes and cooling of residual magma, allowing the ascent and emplacement of shallow small intrusions of variable compositions and source depths that have fed the postcaldera volcanism. Modeling by Deb et al (2021) shows that the present-day heat flow distribution can be used to constrain the evolution and current configuration of the plumbing system. At LH the magma heat sources are best explained by a transcrustal, multilevel system with transient and short-lived periods of magma accumulation and withdrawal from its shallowest portion.…”

Section: Unpacking Magma Reservoirs: the Example Of The Los Humeros C...mentioning

confidence: 99%

See 2 more Smart Citations

Determining the State of Activity of Transcrustal Magmatic Systems and Their Volcanoes

Giordano

Caricchi

2022

Annu. Rev. Earth Planet. Sci.

View full text Add to dashboard Cite

Polygenetic volcanoes and calderas produce eruptions of a wide variety of magnitudes, chemistries, and recurrence times. Understanding the interplay between long- and short-term and deep and shallow processes associated with accumulation and transfer of eruptible magma is essential for assessing the potential for future eruptions to occur and estimating their magnitude, which remains one of the foremost challenges in the Earth sciences. We review literature and use existing data for emblematic volcanic systems to identify the essential data sets required to define the state of activity of volcanoes and their plumbing systems. We explore global eruptive records in combination with heat flux and other geological and geophysical data to determine the evolutionary stage of plumbing systems. We define a Volcanic Activity Index applicable to any volcano that provides an estimate of the potential of a system to erupt in the future, which is especially important for long-quiescent volcanoes. ▪ Magmatic plumbing systems that feed volcanic activity extend across Earth's crust and are long-lived at depth and ephemeral in their shallowest portions. ▪ We revise and update the definitions of active, quiescent, and extinct volcanoes based on physical proxies for the architecture, longevity, amount, and distribution of eruptible magma in the crust. ▪ We propose a Volcanic Activity Index, which provides a relative measure of the state of activity of a volcano with respect to all other volcanoes in the world. ▪ New imaging and monitoring strategies are required to improve our ability to detect lower and middle crust magmatic processes and forecast eruptions and their potential size. Expected final online publication date for the Annual Review of Earth and Planetary Sciences, Volume 50 is May 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

show abstract

Section: Unpacking Magma Reservoirs: the Example Of The Los Humeros C...mentioning

confidence: 99%

Section: Unpacking Magma Reservoirs: the Example Of The Los Humeros C...mentioning

confidence: 99%

Section: Unpacking Magma Reservoirs: the Example Of The Los Humeros C...mentioning

confidence: 99%

See 1 more Smart Citation

Determining the State of Activity of Transcrustal Magmatic Systems and Their Volcanoes

Giordano

Caricchi

2022

Annu. Rev. Earth Planet. Sci.

View full text Add to dashboard Cite

show abstract

“…2 ) and update levels. The various geomodel versions were made available regularly to project partners and were used as a quantitative geometrical basis for additional works, such as compiling rock properties 11 , calculating seismic properties 12 , computing earthquake tomography 13 , evaluating thermal behaviour and geothermal potential 14 , modelling fluid reinjection 15 , and interpreting the volcanic and geothermal systems 16 – 18 .…”

Section: Background and Summarymentioning

confidence: 99%

A collection of 3D geomodels of the Los Humeros and Acoculco geothermal systems (Mexico)

et al. 2022

View full text Add to dashboard Cite

This paper aims at sharing 3D geological models that were constructed at different scales in two Mexican geothermal areas as part of the European-Mexican GEMex project. The project was devoted to investigate superhot resources in Los Humeros and enhanced geothermal systems in Acoculco, both areas located in eastern Mexico. To build confidence in the resultant datasets and to potentially inform the development of models in similar contexts, the methodology is also described. The models integrate the main geological and geothermal features of the study areas and served as a framework for subsequent calculations and simulations. Preliminary models were based on data available at the beginning of the project, and were updated several times as new geological, geochemical, and geophysical field-data were obtained. The construction of the geomodels was performed in a collaborative and interdisciplinary way, using an existing software, and ultimately enabled a consensus interpretation and representation to be reached by the several disciplinary experts involved.

show abstract

“…Several geophysical studies have been carried out in the area; potential field (e.g. Flores et al, 1977;Campos-Enríquez and Arredondo-Fragoso, 1992;Arzate et al, 2018), active and passive seismicity (Urban and Lermo, 2013;Jousset et al, 2020;Granados-Chavarría et al, 2022) and thermal modeling (Deb et al, 2021). Regarding the techniques used to estimate the subsurface electrical resistivity, studies have been carried out with 413 direct current resistivity soundings (Palacios-Hartweg and García-Velázquez, 1981;Cedillo-Rodríguez, 1999), 61 transient electromagnetic soundings (Seismocontrol, 2005), and two magnetotelluric (MT) studies by Arzate et al (2018), andBenediktsdóttir et al (2020), with 70 and 122 soundings, respectively.…”

Section: Geological and Geophysical Backgroundmentioning

confidence: 99%

Seal Cap Resistivity Structure of Los Humeros Geothermal Field from Direct Current and Transient Electromagnetic Soundings

2022

View full text Add to dashboard Cite

Los métodos geofísicos dan información importante en la exploración de recursos geotérmicos. En este trabajo buscamos pistas de la presencia de un yacimiento geotérmico conocido (Los Humeros, México) en la estructura somera de la resistividad eléctrica. Interpretamos cerca de 410 sondeos eléctricos verticales (SEV) y 230 sondeos electromagnéticos transitorios (TEM) que dan información de la resistividad eléctrica hasta profundidades de 1 km, alcanzándose en algunos sitios hasta 2 km.La estructura vertical de la resistividad generalmente consiste de una secuencia resistivo-conductor-resistivo. El rasgo más importante es la unidad conductora, conocida como el casquete de arcillas, asociado con arcillas de alteración hidrotermal arriba del yacimiento geotérmico. Esta unidad sufre de un problema de equivalencia, donde no se pueden determinar por separado su resistividad de su espesor. Sin embargo, las temperaturas de los pozos y las arcillas de alteración asociadas ayudan a constreñir este problema. En varias zonas de la unidad resistiva somera encontramos resistividades bajas que podrían representar zonas de recarga donde roca fracturada permite la infiltración de agua meteórica. El casquete de arcillas no solo se presenta sobre el yacimiento, sino que tiene una presencia regional. Sin embargo, sobre el reservorio esta unidad tiene una mayor conductancia y su cima está más somera. Los pocos lugares donde los sondeos eléctricos alcanzaron profundidades del yacimiento con resistividades bien resueltas dan una resistividad media de 118 ohm▪m, sin poder diferenciar estadísticamente las zonas productoras de las no productoras. Esta resistividad está dentro del rango de valores encontrados en otras zonas geotérmicas del mundo.

show abstract

An approach to reconstruct the thermal history in active magmatic systems: Implications for the Los Humeros volcanic complex, Mexico

Cited by 10 publications

References 96 publications

Determining the State of Activity of Transcrustal Magmatic Systems and Their Volcanoes

Determining the State of Activity of Transcrustal Magmatic Systems and Their Volcanoes

A collection of 3D geomodels of the Los Humeros and Acoculco geothermal systems (Mexico)

Seal Cap Resistivity Structure of Los Humeros Geothermal Field from Direct Current and Transient Electromagnetic Soundings

Contact Info

Product

Resources

About