dor_id: 4133168

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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

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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/1329/1311

100.1.#.a: Delgado Argote, L.A.

524.#.#.a: Delgado Argote, L.A. (1989). Regional implications of the Jurassic-cretaceous volcanosedimentary cuicateco terrane, Oaxaca, Mexico. Geofísica Internacional; Vol. 28 Núm. 5: Diciembre 31, 1989; 939-973. Recuperado de https://repositorio.unam.mx/contenidos/4133168

245.1.0.a: Regional implications of the Jurassic-cretaceous volcanosedimentary cuicateco terrane, Oaxaca, Mexico

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

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 1989

264.#.1.c: 1989-12-01

653.#.#.a: Tectónica; Secuencia volcanosedimentaria; Jurásico cretácico; Terreno Cuicatec; Oaxaca; México; Tectonics; Volcanosedimentary Sequence; Cretaceous Jurassic; Cuicatec Terrain; Oaxaca; Mexico

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884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1329

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/1329

041.#.7.h: spa

520.3.#.a: The 235 km long and 20 km wide Cuicateco Terrane is located between the eastern margin of the Precambrian Zapoteco Terrane and the northwestern margin of the Permian Batholith of Chiapas. The study area is about 800 sq. km, located in the northwestern limit of the terrane. The association of andesitic lavas and tuffs with sedimentary rocks which grade eastward from feldspatic wackes, calcareous wackes to limestones is comparable to an island arc which includes small internal basins. The "roots" of the magmatic province are exposed in the western side of the terrane corresponding to granodioriticmonzonitic rocks showing ultramafic segregations (pyroxenites and amphibolites). The crystalline rocks show a strong mylonitic solid-1ltate ductile flow fabric decreasing toward inner zones, where the intrusives are almost isotropic. Where the intrusives are absent, the western side of the magmatic belt is occupied by metaandesites showing the same metamorphic fabric. A large wedge of serpentinized ultramafics and leucodiorites are tectonically emplaced in the sequence of metatuffs. In accordance with the present-day meteoric water, chrysotile and lizardite structural water shows a DIH average ratio of -59 per mil, indicating its tectonically related formation.Structurally, the sedimentary sequence dermes a thrust-faulted, folded and weakly metamorphosed belt verging eastward. It is considered that the contact zone between the older terranes, which have a difference in thickness of about 20 km, is a major factor lithostatics on the location of the Cuicateco magmatic province.doi: https://doi.org/10.22201/igeof.00167169p.1989.28.5.1292

773.1.#.t: Geofísica Internacional; Vol. 28 Núm. 5: Diciembre 31, 1989; 939-973

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: 939-973

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

doi: https://doi.org/10.22201/igeof.00167169p.1989.28.5.1292

handle: 00eed831cce87b46

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

856.#.0.q: application/pdf

file_creation_date: 2008-06-25 20:01:11.0

file_modification_date: 2022-07-20 17:42:55.0

file_creator: L.A. Delgado Argote

file_name: f302e00eb1381d493d7791d681cf43f17d889ebd958b14ddecfbb2808bd918a0.pdf

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245.1.0.b: Regional implications of the Jurassic-cretaceous volcanosedimentary cuicateco terrane, Oaxaca, Mexico

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

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Artículo

Regional implications of the Jurassic-cretaceous volcanosedimentary cuicateco terrane, Oaxaca, Mexico

Delgado Argote, L.A.

Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Instituto de Geofísica, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Delgado Argote, L.A. (1989). Regional implications of the Jurassic-cretaceous volcanosedimentary cuicateco terrane, Oaxaca, Mexico. Geofísica Internacional; Vol. 28 Núm. 5: Diciembre 31, 1989; 939-973. Recuperado de https://repositorio.unam.mx/contenidos/4133168

Descripción del recurso

Autor(es)
Delgado Argote, L.A.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Regional implications of the Jurassic-cretaceous volcanosedimentary cuicateco terrane, Oaxaca, Mexico
Fecha
1989-12-01
Resumen
The 235 km long and 20 km wide Cuicateco Terrane is located between the eastern margin of the Precambrian Zapoteco Terrane and the northwestern margin of the Permian Batholith of Chiapas. The study area is about 800 sq. km, located in the northwestern limit of the terrane. The association of andesitic lavas and tuffs with sedimentary rocks which grade eastward from feldspatic wackes, calcareous wackes to limestones is comparable to an island arc which includes small internal basins. The "roots" of the magmatic province are exposed in the western side of the terrane corresponding to granodioriticmonzonitic rocks showing ultramafic segregations (pyroxenites and amphibolites). The crystalline rocks show a strong mylonitic solid-1ltate ductile flow fabric decreasing toward inner zones, where the intrusives are almost isotropic. Where the intrusives are absent, the western side of the magmatic belt is occupied by metaandesites showing the same metamorphic fabric. A large wedge of serpentinized ultramafics and leucodiorites are tectonically emplaced in the sequence of metatuffs. In accordance with the present-day meteoric water, chrysotile and lizardite structural water shows a DIH average ratio of -59 per mil, indicating its tectonically related formation.Structurally, the sedimentary sequence dermes a thrust-faulted, folded and weakly metamorphosed belt verging eastward. It is considered that the contact zone between the older terranes, which have a difference in thickness of about 20 km, is a major factor lithostatics on the location of the Cuicateco magmatic province.doi: https://doi.org/10.22201/igeof.00167169p.1989.28.5.1292
Tema
Tectónica; Secuencia volcanosedimentaria; Jurásico cretácico; Terreno Cuicatec; Oaxaca; México; Tectonics; Volcanosedimentary Sequence; Cretaceous Jurassic; Cuicatec Terrain; Oaxaca; Mexico
Idioma
spa
ISSN
ISSN-L: 2954-436X; ISSN impreso: 0016-7169

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