dor_id: 4132095

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351.#.#.b: Geofísica Internacional

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100.1.#.a: Gross, Essa L.; Stewart, John H.; Gehrels, George E.

524.#.#.a: Gross, Essa L., et al. (2000). Detrital zircon geochronology of Neoproterozoic to Middle Cambrian miogeoclinal and platformal strata: Northwest Sonora, Mexico. Geofísica Internacional; Vol. 39 Núm. 4: Octubre 1, 2000; 295-308. Recuperado de https://repositorio.unam.mx/contenidos/4132095

245.1.0.a: Detrital zircon geochronology of Neoproterozoic to Middle Cambrian miogeoclinal and platformal strata: Northwest Sonora, Mexico

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

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 2000

264.#.1.c: 2000-10-01

653.#.#.a: Circones detritales; geocronología U-Pb; noroeste de México; Detrital zircons; U-Pb geochronology; northwest Mexico

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520.3.#.a: Eighty-five detrital zircon grains from Mesoproterozoic and/or Neoproterozoic to Middle Cambrian sedimentary strata in northwest Sonora, Mexico, have been analyzed to determine source terranes and provide limiting depositional ages of the units. The zircon suites from the Mesoproterozoic and/or Neoproterozoic El Alamo Formation and El Aguila unit yield ages between 1.06 Ga and 2.67 Ga, with predominant ages of 1.1 to 1.2 Ga. Zircons from the Lower? and Middle Cambrian Bolsa Quartzite show age groups from 525 Ma to 1.63 Ga, with a dominant population of 1.1 to 1.2 Ga grains. Grains older than 1.2 Ga in the samples were most likely derived from basement terranes and ~1.4 Ga granitic bodies of the southwest U.S. and northwest Mexico. It is also possible that the sediments were transported from the south, although source rocks of the appropriate age are not presently exposed south of the study area in northern Mexico. Three possibilities for the dominant 1.1 to 1.2 Ga grains include derivation from: (1) exposures of the Grenville belt in southern North America, (2) local 1.1-1.2 Ga granite bodies, or (3) a southern source, such as the Oaxaca terrane, that was subsequently rifted away. Sampling of additional units in the western U.S. and northern Mexico may help resolve the ambiguity surrounding the source of the 1.1 to 1.2 Ga grains.doi: https://doi.org/10.22201/igeof.00167169p.2000.39.4.241

773.1.#.t: Geofísica Internacional; Vol. 39 Núm. 4: Octubre 1, 2000; 295-308

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doi: https://doi.org/10.22201/igeof.00167169p.2000.39.4.241

handle: 00c4baa61adf9f55

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

856.#.0.q: application/pdf

file_creation_date: 2000-10-19 12:25:13.0

file_modification_date: 2022-07-13 19:34:16.0

file_creator: Essa L. Gross

file_name: 56eaa422d2179541ca232fea6926f42a6b3bf6d89f6cf00eeb9bfd5522610d84.pdf

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245.1.0.b: Detrital zircon geochronology of Neoproterozoic to Middle Cambrian miogeoclinal and platformal strata: Northwest Sonora, Mexico

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Artículo

Detrital zircon geochronology of Neoproterozoic to Middle Cambrian miogeoclinal and platformal strata: Northwest Sonora, Mexico

Gross, Essa L.; Stewart, John H.; Gehrels, George E.

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

Gross, Essa L., et al. (2000). Detrital zircon geochronology of Neoproterozoic to Middle Cambrian miogeoclinal and platformal strata: Northwest Sonora, Mexico. Geofísica Internacional; Vol. 39 Núm. 4: Octubre 1, 2000; 295-308. Recuperado de https://repositorio.unam.mx/contenidos/4132095

Descripción del recurso

Autor(es)
Gross, Essa L.; Stewart, John H.; Gehrels, George E.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Detrital zircon geochronology of Neoproterozoic to Middle Cambrian miogeoclinal and platformal strata: Northwest Sonora, Mexico
Fecha
2000-10-01
Resumen
Eighty-five detrital zircon grains from Mesoproterozoic and/or Neoproterozoic to Middle Cambrian sedimentary strata in northwest Sonora, Mexico, have been analyzed to determine source terranes and provide limiting depositional ages of the units. The zircon suites from the Mesoproterozoic and/or Neoproterozoic El Alamo Formation and El Aguila unit yield ages between 1.06 Ga and 2.67 Ga, with predominant ages of 1.1 to 1.2 Ga. Zircons from the Lower? and Middle Cambrian Bolsa Quartzite show age groups from 525 Ma to 1.63 Ga, with a dominant population of 1.1 to 1.2 Ga grains. Grains older than 1.2 Ga in the samples were most likely derived from basement terranes and ~1.4 Ga granitic bodies of the southwest U.S. and northwest Mexico. It is also possible that the sediments were transported from the south, although source rocks of the appropriate age are not presently exposed south of the study area in northern Mexico. Three possibilities for the dominant 1.1 to 1.2 Ga grains include derivation from: (1) exposures of the Grenville belt in southern North America, (2) local 1.1-1.2 Ga granite bodies, or (3) a southern source, such as the Oaxaca terrane, that was subsequently rifted away. Sampling of additional units in the western U.S. and northern Mexico may help resolve the ambiguity surrounding the source of the 1.1 to 1.2 Ga grains.doi: https://doi.org/10.22201/igeof.00167169p.2000.39.4.241
Tema
Circones detritales; geocronología U-Pb; noroeste de México; Detrital zircons; U-Pb geochronology; northwest Mexico
Idioma
spa
ISSN
ISSN-L: 2954-436X; ISSN impreso: 0016-7169

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