dor_id: 4133276

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/254/243

100.1.#.a: González-naranjo, G. A.; Molina Garza, R. S.; Chávez-cabello, G.

524.#.#.a: González-naranjo, G. A., et al. (2008). Paleomagnetic study of Jurassic and Cretaceous rocks north of San Marcos fault, central Coahuila, México. Geofísica Internacional; Vol. 47 Núm. 1: Enero 1, 2008; 41-51. Recuperado de https://repositorio.unam.mx/contenidos/4133276

245.1.0.a: Paleomagnetic study of Jurassic and Cretaceous rocks north of San Marcos fault, central Coahuila, México

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

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 2008

264.#.1.c: 2008-01-01

653.#.#.a: Falla San Marcos; Paleomagnetismo; Potrero Colorado; Sierra La Fragua; Coahuila; San Marcos fault; Paleomagnetism; Potrero Colorado; La Fragua Range; Coahuila

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/254

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/254

041.#.7.h: spa

520.3.#.a: Upper Jurassic and Lower Cretaceous continental strata at Potrero Colorado, in the core of Sierra La Fragua anticline in central Coahuila, carry dual–polarity characteristic magnetizations that we interpret as near primary chemical remanent magnetizations. Upper Jurassic fluvial and eolian sandstones of the Colorado beds yield a tilt–corrected mean of D=10.2° I=28.2° (n=18 sites, k=22.1, α95=7.5°). A steeper inclination magnetization observed in five sites of the Colorado beds is interpreted as a secondary, post–Laramide folding, magnetization. Lower Cretaceous fluvial sandstones of the San Marcos Formation yield a combined mean of D=358.1°, I=46.4° (n=13 sites, k=22.7, α95=8.9°), but the stratigraphically lower sites on the eastern side of the anticline have south–southwest directed and moderately steep negative magnetizations (mean of D=191.7° I=–54.9°; k=38.7, α95=9.8°, n=7 sites) which are statistically distinct from northwest directed magnetizations (mean of D=333.6° I=58.0°; k=28.3, α95=12.8°, n=6 sites) observed in stratigraphically higher sites in the west–central part of the anticline. We interpret the difference in declinations in the San Marcos Formation as the result of rotation during deposition of this unit. The characteristic shallow–inclination magnetization in Jurassic strata is also discordant with respect to the Late Jurassic reference direction. Both, the lower San Marcos Formation and the Colorado beds indicate clockwise rotations of 38.5°±8.3° and 30.0°±2.3°, respectively. The sampling sites are located within a clastic wedge that records activity of the San Marcos fault during Late Jurassic and Early Cretaceous time. These data indicate that during deposition of the Colorado beds and San Marcos Formation, the fault behaved as a normal fault with a small right–lateral component. The area of Potrero Colorado is interpreted as a zone of relay in the normal San Marcos fault, which accommodated clockwise rotation recorded by Upper Jurassic and Lower Cretaceous strata.doi:  https://doi.org/10.22201/igeof.00167169p.2008.47.1.66  

773.1.#.t: Geofísica Internacional; Vol. 47 Núm. 1: Enero 1, 2008; 41-51

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: 41-51

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

doi: https://doi.org/10.22201/igeof.00167169p.2008.47.1.66

handle: 46e541f26345106b

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

856.#.0.q: application/pdf

file_creation_date: 2008-01-29 18:32:28.0

file_modification_date: 2022-05-27 18:36:14.0

file_creator: González-Naranjo G.A.

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245.1.0.b: Paleomagnetic study of Jurassic and Cretaceous rocks north of San Marcos fault, central Coahuila, México

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

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