U–Pb Geochronology of VMS mineralization in the Iberian Pyrite Belt

Barrie, Tucker; Amelin, Yuri; Pascual, Emilio Soler

doi:10.1007/s00126-002-0302-7

Cited by 84 publications

(80 citation statements)

References 24 publications

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“…The geochemical similarities between the volcanic rocks of the VSC and the TTG plutonic rocks of the SNB (Schütz et al 1987;Thiéblemont et al 1998; Díez-Montes and Bellido-Mulas 2008; Díez-Montes et al 2011), as well as the available U-Pb geochronology data (Barrie et al 2002;Dunning et al 2002;Valenzuela et al 2011) suggest that the Volcano-Sedimentary Complex was approximately coeval and cogenetic with the TTG plutonic rocks of the Sierra Norte Batholith.…”

Section: Geochemistry Of Volcanic Rocksmentioning

confidence: 98%

“…The SNB includes three types of geochemical associations, mafic rocks (gabbrodiorite) with ultramafic cumulates, subvolcanic TTG intrusions, tonalite, trondhjemite and granodiorite (Schütz et al 1987;Halsall 1989;Díez-Montes and Bellido-Mulas 2008;Díez-Montes et al 2011) with an age range of 335-355 Ma (Dunning et al 2002;Barrie et al 2002;Gladney et al 2014, in press), and aluminopotassic granitoid plutons that intruded the TTG group (Díez-Montes and Bellido-Mulas 2008). There is common evidence of mingling between the TTG and the mafic rocks.…”

Section: Stratigraphymentioning

confidence: 99%

“…U-Pb dating of zircons has been carried out in several places in the IPB (Nesbitt et al 1999;Barrie et al 2002;Dunning et al 2002;Rosa et al 2009;Valenzuela et al 2011). The age determinations were predominantly made of felsic rocks (rhyolites and rhyodacites).…”

Section: Stratigraphymentioning

confidence: 99%

“…The zircon inheritance provides direct evidence for older (Proterozoic to Ordovician) detrital components in their source rocks (Barrie et al 2002;Rosa et al 2009). The diversity of chemical and Sr-Nd isotopic composition of rhyolites, dacites and minor andesites can mainly be explained either by differences in composition of the source rocks or by different degrees of partial melting of upper crust (e.g., Mitjavila et al 1997).…”

Section: Geochemistry Of Volcanic Rocksmentioning

confidence: 99%

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Introduction and Geological Setting of the Iberian Pyrite Belt

Inverno

Montes

Rosa

et al. 2015

Mineral Resource Reviews

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The 250 × 20-70 km Iberian Pyrite Belt (IPB) is a Variscan metallogenic province in SW Portugal and Spain hosting the largest concentration of massive sulphide deposits worldwide. The lowermost stratigraphic unit is the early Givetian to late Famennian-Strunian (base unknown) PhylliteQuartzite Group (PQG), with shales, quartz-sandstones, quartzwacke siltstones, minor conglomerate and limestones at the top. The PQG is overlain by the Volcanic Sedimentary Complex (VSC), of late Famennian to mid-late Visean age, with a lower part of mafic volcanic rocks, rhyolites, dacites and dark shales, hosting VHMS deposits on top (many times capped by a jasper/chert layer), and an upper part, with dark, purple and other shales and volcanogenic/volcaniclastic rocks, carrying Mn oxide deposits. The VSC is covered by the thousands of meters thick Baixo Alentejo Flysch Group of late Visean to Moscovian age. The VSC

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Section: Geochemistry Of Volcanic Rocksmentioning

confidence: 98%

Section: Stratigraphymentioning

confidence: 99%

Section: Stratigraphymentioning

confidence: 99%

Section: Geochemistry Of Volcanic Rocksmentioning

confidence: 99%

See 2 more Smart Citations

Introduction and Geological Setting of the Iberian Pyrite Belt

Inverno

Montes

Rosa

et al. 2015

Mineral Resource Reviews

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“…3), y su edad, de acuerdo con los datos radiométricos existentes, fluctúa entre 354,4 +5/-4 Ma para el granito de Campofrío (Dunning et al, 2002) y 346,23 ± 0,81 Ma para una tonalita cercana a Campofrío (Tucker Barrie et al, 2002 puesta por basaltos, andesitas basálticas, traquibasaltos, andesitas, dacitas y riolitas de edad Carbonífero Inferior.…”

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Caracterización geoquímica y estudio comparativo de plagiogranitos de las Zonas Surportuguesa y Ossa-Morena (SO del Macizo Ibérico, España)

Bellido¹,

Montes²,

Sánchez-García³

2010

Estud. geol.

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Introducción y contexto geológicoEn este trabajo se hace un estudio comparativo de plagiogranitos en dos zonas diferentes del Macizo Ibérico (Zonas Surportuguesa y Ossa-Morena) (figs. 1 y 2) y en dos contextos geodinámicos distintos. Uno de ellos corresponde a un evento extensional en el margen SW de Gondwana, que tuvo lugar durante el Rift Cámbrico Inferior-Ordovícico en Ossa-Morena y el otro está relacionado con una (astenospheric, lithospheric and crustal).

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The elusive nature of the Rheic Ocean suture in SW Iberia

et al. 2015

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The Rheic Ocean suture resulted from pre-Carboniferous oceanic subduction followed by Late Devonian-Carboniferous Variscan collision. In SW Iberia, this suture has been classically located along the boundary between the Ossa-Morena and South Portuguese Zones based on the presence of three units: (i) a conspicuous metamafic unit (Beja-Acebuches) that crops out along this boundary and has been interpreted as a pre-Carboniferous Rheic Ocean ophiolite; (ii) a low-grade metasedimentary unit with minor mid-ocean ridge basalt-like lithologies (Pulo do Lobo unit), thought to represent a Rheic Ocean subduction-related accretionary prism; and (iii) the allochthonous Cubito-Moura unit that contains high-pressure and ophiolitic-like rocks. We report new structural and geochronological data that allow us to reinterpret the origin and internal structure of the Beja-Acebuches and the Pulo do Lobo units. Thus, both the Beja-Acebuches protoliths and the Pulo do Lobo metabasalts would have been formed in the context of an intracollisional extensional stage that interrupted the Variscan collision at early Carboniferous time, after the Rheic Ocean consumption, and the first continental collision. Later on, collision was resumed in an oblique left-lateral regime that gave way to coeval frontal (folds and thrusts) and lateral (shear zones and strike-slip faults) structures, with variable pressure-temperature conditions and space distribution along time. As a consequence of the superposition of transtension and complex transpression, the Rheic suture in SW Iberia has an obscure nearly cryptic appearance.

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U–Pb Geochronology of VMS mineralization in the Iberian Pyrite Belt

Cited by 84 publications

References 24 publications

Introduction and Geological Setting of the Iberian Pyrite Belt

Introduction and Geological Setting of the Iberian Pyrite Belt

Caracterización geoquímica y estudio comparativo de plagiogranitos de las Zonas Surportuguesa y Ossa-Morena (SO del Macizo Ibérico, España)

The elusive nature of the Rheic Ocean suture in SW Iberia

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