Pb isotope evidence for Colombia-southern México connections in the Proterozoic

Ruíz, Joaquin; Tosdal, Richard M.; Restrepo, P.; Murillo-Muñetón, Gustavo

doi:10.1130/0-8137-2336-1.183

Cited by 53 publications

(53 citation statements)

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“…This basement, as typified by our xenocryst ages, is not characteristic of North Africa (Cahen et al 1984), from where most parts of the Bohemian Massif are supposed to be derived. Crust with ages in the range 1000±1400 Ma is unknown from this region but has been reported from northwestern Venezuela and northern Colombia (Kroonenberg 1982;Priem et al 1989;Restrepo-Pace et al 1997;Ruiz et al 1999) as part of the Grenville mobile belt which extended from northwestern Canada via Mexico to as far south as Peru and northern Argentina (Dalziel et al 1994).…”

Section: Resultsmentioning

confidence: 93%

Single zircon ages and whole-rock Nd isotopic systematics of early Palaeozoic granitoid gneisses from the Czech and Polish Sudetes (Jizerské hory, Krkonoše Mountains and Orlice-Sněžník Complex)

et al. 2001

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Granitoid orthogneisses make up the predominant rock type in the West Sudetes from JizerskØ hory in the NW to the OrlickØ hory and Sne Ï z Ïník Mountains in the SE. These generally strongly foliated gneisses are calc-alkaline in composition and display trace element characteristics suggesting generation in a volcanic arc setting. Single zircon ages reflecting the time of emplacement of the gneiss protoliths define a relatively narrow Cambro-Ordovician range between 502 and 515 Ma.

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Section: Resultsmentioning

confidence: 93%

Single zircon ages and whole-rock Nd isotopic systematics of early Palaeozoic granitoid gneisses from the Czech and Polish Sudetes (Jizerské hory, Krkonoše Mountains and Orlice-Sněžník Complex)

et al. 2001

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“…1 Ga) age (Keppie andOrtegaGutiØrrez 1995, 1999), overlain unconformably by Lower Ordovician rocks containing a Gondwanan fauna (Robison and Pantoja-Alor 1968 revised by Shergold 1975;Boucot et al 1997). The basement is isotopically distinct from that of the North American Grenville Belt and its Pb isotopic signatures are due to mixing of Archean and juvenile Grenville sources (Ruiz et al 1999;Cameron et al 2004).…”

Section: Geologic Settingmentioning

confidence: 99%

“…All of these terranes expose basement of Grenville age (Oaxaquia and Chortis Block) or late Neoproterozoic age (Keppie and Ortega-GutiØrrez 1999). The Grenville-age basement is isotopically transitional between that of the Grenville Belt and the basement massifs of Grenville age in the northern Andes of Columbia (Ruiz et al 1999), which has been related to mixing of juvenile Grenville and Archean sources (Cameron et al 2004). The Maya terrane is thought to have been contiguous with the Florida basement until the opening of the Gulf of Mexico in the Mesozoic (e.g.…”

Section: Middle American Terranesmentioning

confidence: 99%

“…The Maya terrane contains~1.23 Ga orthogneisses that underwent granulite facies metamorphism at 990-975 Ma (Weber and Köhler 1999;Ruiz et al 1999), a history that suggests a genetic relationship to Oaxaquia (Keppie and Ramos 1999). Zircons from plutonic rocks found in boreholes in the Yucatan Peninsula have yielded late Neoproterozoic ages (Krogh et al 1993), and Late Silurian ages have been recorded in plutons in the Maya Mountains (Steiner and Walker 1996).…”

Section: Middle American Terranesmentioning

confidence: 99%

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Neoproterozoic?Early Paleozoic evolution of peri-Gondwanan terranes: implications for Laurentia-Gondwana connections

Murphy

Pisarevsky

Nance

et al. 2004

Int J Earth Sci (Geol Rundsch)

275

134

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Neoproterozoic tectonics is dominated by the amalgamation of the supercontinent Rodinia at ca. 1.0 Ga, its breakup at ca. 0.75 Ga, and the collision between East and West Gondwana between 0.6 and 0.5 Ga. The principal stages in this evolution are recorded by terranes along the northern margin of West Gondwana (Amazonia and West Africa), which continuously faced open oceans during the Neoproterozoic. Two types of these so-called peri-Gondwanan terranes were distributed along this margin in the late Neoproterozoic: (1) Avalonian-type terranes (e.g.

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“…geográfi ca de los terrenos cristalinos que afl oran en el sur de México, y sus correlaciones con afl oramientos aislados y con los xenolitos colectados en secuencias volcánicas recientes al norte de la FVTM, han estado sujetos a múlti-ples discusiones (Keppie y Ortega-Gutiérrez, 1998;Ruiz et al, 1999).…”

Section: Geología Del Basamentounclassified

Petrogénesis ígnea de la Faja Volcánica Transmexicana

Gómez-Tuena¹,

Orozco-Esquivel²,

Ferrari³

2005

BSGM

113

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C i e n A ñ o s ResumenLa extraordinaria diversidad magmática de la Faja Volcánica Transmexicana está controlada (directa o indirectamente) por dos placas oceánicas independientes cuyos parámetros geofísicos y composicionales se modifi can constantemente a lo largo de la trinchera, por un régimen tectónico esencialmente distensivo que opera con distinta intensidad sobre la placa continental, por un basamento cortical con diferentes edades, espesores y composiciones, y por una fuente mantélica primaria de composición extremadamente variable que ha sido infl uenciada, en mayor o menor medida, por los agentes químicos derivados de la subducción. El régimen tectónico convergente y, en consecuencia, el arco magmático, tampoco han evolucionado de forma homogénea a lo largo su historia, sino que han mostrado transformaciones notables en su posición, geometría y composición. Por estos motivos, la Faja Volcánica Transmexicana es el resultado de uno de los sistemas tectónicos convergentes más complejos del planeta, el objeto de más de un siglo de investigaciones científi cas, y también el centro de las controversias más notables sobre la geología mexicana.Palabras clave: Faja Volcánica Transmexicana, México, subducción, arco magmático, petrología ígnea, manto, corteza. Abstract The magmatic diversity of the Transmexican Volcanic Belt is directly or indirectly controlled by two independent oce-

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Pb isotope evidence for Colombia-southern México connections in the Proterozoic

Cited by 53 publications

References 0 publications

Single zircon ages and whole-rock Nd isotopic systematics of early Palaeozoic granitoid gneisses from the Czech and Polish Sudetes (Jizerské hory, Krkonoše Mountains and Orlice-Sněžník Complex)

Single zircon ages and whole-rock Nd isotopic systematics of early Palaeozoic granitoid gneisses from the Czech and Polish Sudetes (Jizerské hory, Krkonoše Mountains and Orlice-Sněžník Complex)

Neoproterozoic?Early Paleozoic evolution of peri-Gondwanan terranes: implications for Laurentia-Gondwana connections

Petrogénesis ígnea de la Faja Volcánica Transmexicana

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