Cretaceous to Cenozoic thermal evolution of the southwestern South Carpathians: evidence from fission-track thermochronology

Bojar, Ana-Voica; Neubauer, Franz; Fritz, Harald

doi:10.1016/s0040-1951(98)00170-x

Cited by 69 publications

(48 citation statements)

References 40 publications

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“…1). Several broadly subduction-related tectonic models have been proposed to explain the evolution of the Cretaceous and EoceneOligocene magmatic arcs, including extensional rifting associated with orogenic collapse (Berza et al, 1998;Bojar et al, 1998;Iancu et al, 2005;Willingshofer et al, 2001), or rollback of a subducting oceanic slab (Burg, 2012;Lips et al, 2002;Zimmerman et al, 2008). The slab rollback model implies a gradual steepening of a northward subducting lithosphere slab, derived from the Jurassic to Cretaceous Vardar ocean (van Hinsbergen et al, 2005).…”

Section: Tectonic Settingmentioning

confidence: 99%

Geochronology, geochemistry and isotope tracing of the Oligocene magmatism of the Buchim–Damjan–Borov Dol ore district: Implications for timing, duration and source of the magmatism

Lehmann

Barcikowski

Quadt

et al. 2013

Lithos

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. show that the magmatic products were slightly contaminated by continental crust material, e.g., the Variscan/Cadomian basement. In the Late EoceneOligocene belt the magmatism between 29 and 35 Ma is dominated by crustal melting with an increase in the mantle contribution between 20 and 27 Ma. We suggest the following scenario for the magmatic history of the Buchim-Damjan-Borov Dol ore district: a slab rollback of an oceanic slab located further to the SW which led to extensional and compressional features in upper levels of the continental crust. In the middle to upper crust three consecutive crystallization stages occurred at variable depths as indicated by amphibole zonation. Mixing of newly formed crust with mantle-like affinities and continental crust material in variable degrees during the ascent of the magma can explain all geochemical characteristics. The magma crystallized as dykes or stocks near the Earth's surface (N 1 km) after its final emplacement and contemporaneous hydrothermal activity led to different mineralization styles depending on the lithology of the host rocks.

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Section: Tectonic Settingmentioning

confidence: 99%

Geochronology, geochemistry and isotope tracing of the Oligocene magmatism of the Buchim–Damjan–Borov Dol ore district: Implications for timing, duration and source of the magmatism

Lehmann

Barcikowski

Quadt

et al. 2013

Lithos

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“…The chronology of the assembly of the present nappe architecture GEOLOGICA CARPATHICA GEOLOGICA CARPATHICA GEOLOGICA CARPATHICA GEOLOGICA CARPATHICA GEOLOGICA CARPATHICA, 2013, 64, 5, 375-382 generally resembles that of Austroalpine units in the Eastern Alps and Western Carpathians, and resulted from mid-Late Cretaceous nappe assembly (e.g. Burchfiel 1980;Săndulescu 1984;Dallmeyer et al 1996Dallmeyer et al , 1998Bojar et al 1998;Neubauer 2002).…”

Section: Geological Settingmentioning

confidence: 99%

“…K-Ar ages reported for whole-rock samples and concentrates of amphibole, muscovite and biotite display a range between ca. 550 and 70 Ma (Grünenfelder et al 1983;Kräutner et al 1988;Ratschbacher et al 1993;Dallmeyer et al 1996Dallmeyer et al , 1998Bojar et al 1998). Considered together, the available radiometric results have been interpreted as a record of the effects of penetrative Cadomian/Baikalian (late Precambrian) tectonothermal activity (e.g.…”

Section: Geological Settingmentioning

confidence: 99%

“…Balintoni & Balica 2012), which has been variably and only locally overprinted by retrogressive Variscan (Late Paleozoic) and/ or Alpine tectonothermal events (e.g. Kräutner et al 1988;Bojar et al 1998;Willingshofer et al 2001 (Iancu et al 2005;Ciulavu et al 2008;Bojar et al 2010). Age data for Alpine metamorphism are scarce (Kräutner et al 1988;Ratschbacher et al 1993).…”

Section: Geological Settingmentioning

confidence: 99%

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Origin of sediments during Cretaceous continent—continent collision in the Romanian Southern Carpathians: preliminary constraints from 40Ar/39Ar single-grain dating of detrital white mica

Neubauer¹,

Bojar²

2013

Geologica Carpathica

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Single grains of detrital white mica from the lowermost Upper Cretaceous Sinaia Flysch have been dated using the 40 Ar/ 39 Ar technique. The Sinaia Flysch was deposited in a trench between the Danubian and Getic microcontinental pieces after the closure of the Severin oceanic tract. The Danubian basement is largely composed of a Panafrican/Cadomian basement in contrast to the Getic/Supragetic units with a Variscan-aged basement, allowing the distinction between these two blocks. Dating of detrital mica from the Sinaia Flysch resulted in predominantly Variscan ages (329 ± 3 and 288 ± 4 Ma), which prove the Getic/Supragetic source of the infill of the Sinaia Trench. Subordinate Late Permian (263 ± 8 and 255 ±10 Ma), Early Jurassic (185 ±4 and 183 ± 3 Ma) and Late Jurassic/Early Cretaceous (149 ± 3 and 140 ± 3 Ma) ages as well as a single Cretaceous age (98 ± 4 Ma) are interpreted as representing the exposure of likely retrogressive low-grade metamorphic ductile shear zones of various ages. Ductile shear zones with similar 40 Ar/ 39 Ar white mica ages are known in the Getic/Supragetic units. The Cretaceous ages also show that Cretaceous metamorphic units were already subject to erosion during the deposition of the Sinaia Flysch.

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“…In the most external part of the South Carpathians a pre-Hercynian province could be outlined, obviously representing the north-western extension of the Moesian Plate. Within the Romanian Carpathians the radiometric K-Ar and 40 Ar/ 39 Ar ages, as well as newer fission-track data, do not sustain re-heating processes above 300 0 C and corresponding regional metamorphic events during meso-and neo-Alpine times (Dallmeyer et al, 1998(Dallmeyer et al, , 1999Bojar et al, 1998).…”

Section: Some Geochemical Remarks On Basalts From Băiţa Bihor (Bihor mentioning

confidence: 77%

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2003

Studia UBB Geologia

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Cretaceous to Cenozoic thermal evolution of the southwestern South Carpathians: evidence from fission-track thermochronology

Cited by 69 publications

References 40 publications

Geochronology, geochemistry and isotope tracing of the Oligocene magmatism of the Buchim–Damjan–Borov Dol ore district: Implications for timing, duration and source of the magmatism

Geochronology, geochemistry and isotope tracing of the Oligocene magmatism of the Buchim–Damjan–Borov Dol ore district: Implications for timing, duration and source of the magmatism

Origin of sediments during Cretaceous continent—continent collision in the Romanian Southern Carpathians: preliminary constraints from 40Ar/39Ar single-grain dating of detrital white mica

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