dor_id: 4132142

506.#.#.a: Público

590.#.#.d: Los artículos enviados a la revista "Geofísica Internacional", se juzgan por medio de un proceso de revisión por pares

510.0.#.a: Consejo Nacional de Ciencia y Tecnología (CONACyT); Scientific Electronic Library Online (SciELO); SCOPUS, Dialnet, Directory of Open Access Journals (DOAJ); Geobase

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

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

590.#.#.c: Open Journal Systems (OJS)

270.#.#.d: MX

270.1.#.d: México

590.#.#.b: Concentrador

883.#.#.u: https://revistas.unam.mx/catalogo/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1032/1419

100.1.#.a: Nieto O., J.; Delgado, L.; Damon, P. E.

524.#.#.a: Nieto O., J., et al. (1985). Geochronologic, petrologic, and structural data related to large morphologic features between the Sierra Madre Occidental and the Mexican Volcanic Belt. Geofísica Internacional; Vol. 24 Núm. 4: Octubre 1, 1985; 623-663. Recuperado de https://repositorio.unam.mx/contenidos/4132142

245.1.0.a: Geochronologic, petrologic, and structural data related to large morphologic features between the Sierra Madre Occidental and the Mexican Volcanic Belt

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 1985

264.#.1.c: 1985-10-01

653.#.#.a: Geocronología; Petrología; Morforlogía; Cinturón Volcánico Mexicano; Geochronology; Petrology; Morphology; Sierra Madre Occidental; Mexican Volcanic Belt

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-SA 4.0 Internacional, https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico revistagi@igeofisica.unam.mx

884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1032

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/1032

041.#.7.h: spa

520.3.#.a: The study area is at the juncture of the Sierra Madre Occidental and Mexican Volcanic Belt centered on the Río Grande de Santiago, 10 km northwest of Guadalajara. On the basis of stratigraphy and K-Ar chronology, the rocks of the area can be divided into seven units: Unit I is an upper Oligocene plutonic sequence; Unit II is a lower-to-middle Miocene andesite, calcic latite, acid ignimbrite volcanic sequence; Unit III is a late Miocene bimodal calcic latite-acid ignimbrite volcanic suite; Unit IV is composed of Pliocene lacustrine sediments (tuffs and basalts); Unit V includes the Pleistone basalts of Mesa de Santa Rosa and other Pleistocene volcano-sedimentary products; Unit VI consists of alkaline basalts confined to the margina of the Río Grande de Santiago (RGS); and Unit VII comprises lahars and laharic breccias exposed on the walls of the RGS. Units I and II can be correlated with the Sierra Madre Occidental volcano-plutonic sequence. Unit III is probably related to the proto-Mexican Volcanic Belt. Unit IV represents a period of basaltic volcanism and internal drainage prior to the cutting of the gorge of the RGS, and Units V-VII are contemporaneous with the Mexican Volcanic Belt (sensu strictu). Structural data from the study area delineate a large right-lateral strike-slip fault system, which is expressed as a complex array of left-handed en-échelon riedels and conjugate antithetic faults. The fractures largely control the course of the river and produce spectacular, horizontally striáted vertical cliffs. Triangulation surveys of various monuments at Santa Rosa dam, for the period 1964-1981, indicate continuous movement of both flanks in a direction parallel to the maximum elongation axis of the strain ellipsoid. In a different riedel, recentdisplacements of terrains in a corn field at the base of the river are consistent with a right-lateral sense of motion and strongly suggest that the fault system is tectonically active. Rose diagrama are in good agreement with the fracture pattérns for other areas similarly defonned. Geologic observations indicaté a minimum displacement of 4 km. Similar rose diagrama ínade independéntly in western Nayarit and southwestern Jalisco show conjugate pairs consistent with a large left-lateral northwest-oriented fault, passing west of the area through the RGS in Nayarit and. continuing southeasterly along the Valle de San Marcos, west of Laguna de Chapala. This model can then explain the presence of large north saouth oriented fold axes in Neogene ignimbrites in Nayarit, while the sector of the fault studied here appears to be a right-lateral conjugate fault of a larger left-lateral system. Several lines of seismic, gravimetric and paleomagnetic data support the postulated mechanism.

773.1.#.t: Geofísica Internacional; Vol. 24 Núm. 4: Octubre 1, 1985; 623-663

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: 623-663

264.#.1.b: Instituto de Geofísica, UNAM

doi: https://doi.org/10.22201/igeof.00167169p.1985.24.4.2181

handle: 5bc4bc63b6fb4517

harvesting_date: 2023-06-20 16:00:00.0

856.#.0.q: application/pdf

file_creation_date: 2008-06-26 16:17:54.0

file_modification_date: 2022-06-23 21:49:26.0

file_creator: Nieto O.

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245.1.0.b: Geochronologic, petrologic, and structural data related to large morphologic features between the Sierra Madre Occidental and the Mexican Volcanic Belt

last_modified: 2023-06-20 16:00:00

license_url: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es

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