Variscan granitoids of central Europe: their typology, potential sources and tectonothermal relations

Finger, Friedrich; Roberts, Malcolm P.; Haunschmid, Bruno; Schermaier, A; Steyrer, Hans-Peter

doi:10.1007/bf01172478

Cited by 226 publications

(136 citation statements)

References 50 publications

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“…However, the post-collisional magmatism generally lasted within 50 Mys for an orogenic cycle (e.g. Van Staal and De Roo, 1995;Finger et al, 1997;Liégeois et al, 1998;Waight et al, 1998;Bea et al, 1999;Van Wagoner et al, 2002). We therefore suggest that the crustal extension and lithospheric thinning in the southern margin of the NCC were probably controlled by an independent geodynamic setting.…”

Section: Geodynamic Backgroundmentioning

confidence: 95%

Petrogenesis of the early Cretaceous Funiushan granites on the southern margin of the North China Craton: Implications for the Mesozoic geological evolution

Gao

Zhao

Chen

2014

Journal of Asian Earth Sciences

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Section: Geodynamic Backgroundmentioning

confidence: 95%

Petrogenesis of the early Cretaceous Funiushan granites on the southern margin of the North China Craton: Implications for the Mesozoic geological evolution

Gao

Zhao

Chen

2014

Journal of Asian Earth Sciences

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“…This Visean age is similar to the age of some Tatry Mts diorites 341 Ma (Poller & Todt 2000) or granitoids in the Žiar Mts 338 Ma (Kohút 2015) indicating a younger magmatic activity also in other parts of the Western Carpathians. This age is coeval with the age of the main Variscan collisional event in the Europe and corresponds to the second group of granites according to model of Finger et al (1997) The significance of the 340 Ma event in the Western Carpathian realm is difficult to assess because its regional extent in other mountain ranges is poorly known. However, new monazite data suggest that this event may have been more widespread.…”

Section: Syn-collisional Granitementioning

confidence: 99%

Variscan thrusting in I- and S-type granitic rocks of the Tribeč Mountains, Western Carpathians (Slovakia): evidence from mineral compositions and monazite dating

Broska¹,

Petrík²

2015

Geologica Carpathica

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Abstract:The Tribeč granitic core (Tatric Superunit, Western Carpathians, Slovakia) is formed by Devonian/Lower Carboniferous, calc-alkaline I-and S-type granitic rocks and their altered equivalents, which provide a rare opportunity to study the Variscan magmatic, post-magmatic and tectonic evolution. The calculated P-T-X path of I-type granitic rocks, based on Fe-Ti oxides, hornblende, titanite and mica-bearing equilibria, illustrates changes in redox evolution. There is a transition from magmatic stage at T ca. 800-850 °C and moderate oxygen fugacity (FMQ buffer) to an oxidation event at 600 °C between HM and NNO up to the oxidation peak at 480 °C and HM buffer, to the final reduction at ca. 470 °C at ∆NN = 3.3. Thus, the post-magmatic Variscan history recorded in I-type tonalites shows at early stage pronounced oxidation and low temperature shift back to reduction. The S-type granites originated at temperature 700-750 °C at lower water activity and temperature. The P-T conditions of mineral reactions in altered granitoids at Variscan time (both I and S-types) correspond to greenschist facies involving formation of secondary biotite. The Tribeč granite pluton recently shows horizontal and vertical zoning: from the west side toward the east S-type granodiorites replace I-type tonalites and these medium/coarse-grained granitoids are vertically overlain by their altered equivalents in greenschist facies. Along the Tribeč mountain ridge, younger undeformed leucocratic granite dykes in age 342 ±4.4 Ma cut these metasomatically altered granitic rocks and thus post-date the alteration process. The overlaying sheet of the altered granites is in a low-angle superposition on undeformed granitoids and forms "a granite duplex" within Alpine Tatric Superunit, which resulted from a syn-collisional Variscan thrusting event and melt formation ~340 Ma. The process of alteration may have been responsible for shifting the oxidation trend to the observed partial reduction.

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“…These are commonly treated as a single coherent group of "Variscan granites" (Franke 2000), although they are of different ages and types. Elaborating the concept of Finger et al (1997), it is suggested that they form at least five independent magmatic systems with individual tectonothermal backgrounds ( Fig. 1): Fig.…”

Section: Geological Backgroundmentioning

confidence: 99%

The Saxo-Danubian Granite Belt: magmatic response to post-collisional delamination of mantle lithosphere below the southwestern sector of the Bohemian Massif (Variscan orogen)

Finger¹,

Gerdes

René³

et al. 2009

Geologica Carpathica

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Abstract:On the basis of the synchronicity of geochronological data and the similarity of granite types, it is proposed that the mid-Carboniferous Fichtelgebirge/Erzgebirge Batholith in the Saxothuringian Zone of the central European Variscan Fold Belt and the South Bohemian Batholith in the Moldanubian Zone (including the intervening Oberpfalz and Bavarian Forest granite areas) belong to one coherent and cogenetic, ca. 400 km long plutonic megastructure. Unlike older (syn-collisional) plutonic structures in the Bohemian Massif, this Saxo-Danubian Granite Belt (nov. nom.) has developed discordant to the Devonian/Early Carboniferous collision-related tectonic architecture of the Bohemian Massif. It is argued that the Saxo-Danubian Granite Belt formed in response to a post-collisional detachment of lithospheric mantle below the south-western sector of the Bohemian Massif.

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Variscan granitoids of central Europe: their typology, potential sources and tectonothermal relations

Cited by 226 publications

References 50 publications

Petrogenesis of the early Cretaceous Funiushan granites on the southern margin of the North China Craton: Implications for the Mesozoic geological evolution

Petrogenesis of the early Cretaceous Funiushan granites on the southern margin of the North China Craton: Implications for the Mesozoic geological evolution

Variscan thrusting in I- and S-type granitic rocks of the Tribeč Mountains, Western Carpathians (Slovakia): evidence from mineral compositions and monazite dating

The Saxo-Danubian Granite Belt: magmatic response to post-collisional delamination of mantle lithosphere below the southwestern sector of the Bohemian Massif (Variscan orogen)

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