La Primavera Caldera (Mexico): Structure inferred from gravity and hydrogeological considerations
Alatorre-mendoza, M. A.; Campos Enríquez, J. O.
Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM
dor_id: 4132161
506.#.#.a: Público
590.#.#.d: Los artículos enviados a la revista "Geofísica Internacional", se juzgan por medio de un proceso de revisión por pares
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561.#.#.u: https://www.geofisica.unam.mx/
650.#.4.x: Físico Matemáticas y Ciencias de la Tierra
336.#.#.b: article
336.#.#.3: Artículo de Investigación
336.#.#.a: Artículo
351.#.#.6: http://revistagi.geofisica.unam.mx/index.php/RGI
351.#.#.b: Geofísica Internacional
351.#.#.a: Artículos
harvesting_group: RevistasUNAM
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270.1.#.d: México
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883.#.#.a: Revistas UNAM
590.#.#.a: Coordinación de Difusión Cultural
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850.#.#.a: Universidad Nacional Autónoma de México
856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1353/1335
100.1.#.a: Alatorre-mendoza, M. A.; Campos Enríquez, J. O.
524.#.#.a: Alatorre-mendoza, M. A., et al. (1992). La Primavera Caldera (Mexico): Structure inferred from gravity and hydrogeological considerations. Geofísica Internacional; Vol. 31 Núm. 4: Octubre 1, 1992; 371-382. Recuperado de https://repositorio.unam.mx/contenidos/4132161
245.1.0.a: La Primavera Caldera (Mexico): Structure inferred from gravity and hydrogeological considerations
502.#.#.c: Universidad Nacional Autónoma de México
561.1.#.a: Instituto de Geofísica, UNAM
264.#.0.c: 1992
264.#.1.c: 1992-10-01
653.#.#.a: Estructura sub-superficial; Caldera riolítica; La Primavera, Jal. (México); Estudio gravimétrico; Consideraciones geohidrológicas; Subsurficial structure; Rhyolitic caldera; La Primavera, Jal. (México); Gravity study; Hidrogeological considerations
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884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1353
001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/1353
041.#.7.h: spa
520.3.#.a: La Primavera geothermal field (Mexico) is associated with a Pleistocene rhyolitic caldera. A gravity study was conducted to assist in its development and exploitation. Digital processing of the gravity data (upward and downward continuations, vertical derivatives) enabled delineation of the main features of the caldera"s subsurficial structure. A 3-D structural model was established, which could be supported by gravity modeling (2-D and 3-D forward modeling). The caldera features an asymmetric subsurface structure: a major depression in its northern half, and a boomerang-shaped structural high to the south. Lineaments reflecting the regional northwest-southeast and northeast-southwest structural fabric were observed. The basal volcanics units are affected by lineaments of the northwest-southeast system, whereas the northeast-southwest system affects only the shallower units. The structural high has a northwest-southeast trend at the western and southwestern portion of the caldera. From its middle part eastward; it has a northeast-southwest direction. The actual geotermal production zone is located above this structural high, on the portion where it changes orientation. Correlation with hydrogeological and geochemical data enabled interpreting the different geologic structures in the context of the hydrothermal system: at depth the northwest-southeast structures seem to control lateral fluid migration, and connect areas of enhanced permeability (i.e., the central production zone and the hydrothermal manifestations located at the caldera"s western rim). Enhanced zones of fracturing favorable for entrapping hydrothermal fluids and structural accidents that may act as conduits (respectively as barriers) for fluids are delineated. In particular, a new target zone, where the production of geothermal fluids may extend, has been identified to the south of the production zone. The structural image elaborated here constitutes a geologic frame for the prevailing hydrogeological conceptual model. This structural information is also useful for the tasks of selecting sites for the reinjection of geothermal brines.
773.1.#.t: Geofísica Internacional; Vol. 31 Núm. 4: Octubre 1, 1992; 371-382
773.1.#.o: http://revistagi.geofisica.unam.mx/index.php/RGI
022.#.#.a: ISSN-L: 2954-436X; ISSN impreso: 0016-7169
310.#.#.a: Trimestral
300.#.#.a: Páginas: 371-382
264.#.1.b: Instituto de Geofísica, UNAM
doi: https://doi.org/10.22201/igeof.00167169p.1992.31.4.1353
handle: 00adc1ef02db69b6
harvesting_date: 2023-06-20 16:00:00.0
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file_modification_date: 2022-07-26 13:35:12.0
file_creator: M.A. Alatorre-Zamora
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245.1.0.b: La Primavera Caldera (Mexico): Structure inferred from gravity and hydrogeological considerations
last_modified: 2023-06-20 16:00:00
license_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es
license_type: by-nc-sa
Alatorre-mendoza, M. A.; Campos Enríquez, J. O.
Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM
Alatorre-mendoza, M. A., et al. (1992). La Primavera Caldera (Mexico): Structure inferred from gravity and hydrogeological considerations. Geofísica Internacional; Vol. 31 Núm. 4: Octubre 1, 1992; 371-382. Recuperado de https://repositorio.unam.mx/contenidos/4132161