Adakite-like and Normal Arc Magmas: Distinct Fractionation Paths in the East Serbian Segment of the Balkan–Carpathian Arc

Kolb, Melanie; Quadt, Albrecht von; Peytcheva, Irena; Heinrich, Christoph A.; Fowler, Sarah Jane; Cvetković, Vladica

doi:10.1093/petrology/egs072

Cited by 66 publications

(71 citation statements)

References 69 publications

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“…In the Pontides, predominant volcanic rocks were mostly emplaced between the late Turonian and latest Campanian (~90-70 Ma) (figure 5) and seem to display southward migration through time [Yılmaz et al, 1997;Bektaş et al, 1999;Okay et al, 2001b;Eyüboğlu et al, 2010], similar to magmatic products in the Balkans [Ciobanu et al, 2002;von Quadt et al, 2005;Kolb et al, 2012].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Behind this compressional front, transtensional to extensional tectonics allowed the opening of sedimentary basins [Willingshofer et al, 1999;Sunal and Tüysüz, 2002]. At the same time, the magmatic activity seems to migrate southward [Yılmaz et al, 1997;Ciobanu et al, 2002;von Quadt et al, 2005;Eyüboğlu et al, 2010] suggesting a southward retreat of the oceanic slab Kolb et al, 2012]. Further north, the opening of the Black Sea basin was associated with an intense stretching of the crust and oceanic spreading in Cenomanian to Santonian times [Zonenshain and Le Pichon, 1986;Görür, 1988;Hippolyte et al, 2010;Nikishin et al, 2015b].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

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Kinematic reconstructions and magmatic evolution illuminating crustal and mantle dynamics of the eastern Mediterranean region since the late Cretaceous

2016

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Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Kinematic reconstructions and magmatic evolution illuminating crustal and mantle dynamics of the eastern Mediterranean region since the late Cretaceous

2016

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“…The high Sr/Y and La/Yb ratios (Table 3) may be an indicator for a high pressure and/or strongly hydrous fractionation (Kolb et al, 2012). Microprobe analyses on amphibole inclusions within plagioclase show conditions which are linked to high-pressure.…”

Section: Magma Evolutionmentioning

confidence: 99%

“…Two important subductionrelated magmatic belts can be distinguished based on time relationships: (a) the Late Cretaceous magmatic zone (Popov, 1981(Popov, , 1987, known as the Apuseni-Banat-Timok-Srednogorie (ABTS) magmatic and metallogenic belt (Popov et al, 2002) and (b) the Late Eocene-Early Oligocene magmatic zone, known as the Macedonian-Rhodope-North Aegean belt (Harkovska et al, 1989). The Late Cretaceous magmatic evolution of the ABTS belt (Georgiev et al, 2012a,b;Kolb et al, 2012; is not restricted to the tectonic zone of Srednogorie and Eastern Serbia, the magmatic evolution is continuing into the Rhodope Massif (Marchev et al, 2004;Marchev et al, 2005; and Ridanj Krepoljin (Kolb et al, 2012). The magmatism within the belt has a highly variable composition, represented by tholeiitic, calc-alkaline, shoshonitic and ultra-K extrusive and intrusive rocks with unradiogenic initial Sr and radiogenic Nd isotopes.…”

Section: Regional Geological Settingmentioning

confidence: 99%

“…The magmatism within the belt has a highly variable composition, represented by tholeiitic, calc-alkaline, shoshonitic and ultra-K extrusive and intrusive rocks with unradiogenic initial Sr and radiogenic Nd isotopes. More recently, von , Georgiev et al (2009) and Kolb et al (2012) proposed the model of a slab rollback and rifting to explain the observed across-arc younging trends of the magmatism from north (~90 Ma) to south (~67 Ma).…”

Section: Regional Geological Settingmentioning

confidence: 99%

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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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Tectonic, magmatic, and metallogenic evolution of the Late Cretaceous arc in the Carpathian‐Balkan orogen

et al. 2015

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The Apuseni-Banat-Timok-Srednogorie Late Cretaceous magmatic arc in the Carpathian-Balkan orogen formed on the European margin during closure of the Neotethys Ocean. It was subsequently deformed into a complex orocline by continental collisions. The Cu-Au mineralized arc consists of geologically distinct segments: the Apuseni, Banat, Timok, Panagyurishte, and Eastern Srednogorie segments. New U-Pb zircon ages and geochemical whole rock data for the Banat and Apuseni segments are combined with previously published data to reconstruct the original arc geometry and better constrain its tectonic evolution. Trace element and isotopic signatures of the arc magmas indicate a subduction-enriched source in all segments and variable contamination by continental crust. The magmatic arc was active for 25 Myr (~92-67 Ma). Across-arc age trends of progressively younger ages toward the inferred paleo-trench indicate gradual steepening of the subducting slab away from the upper plate European margin. This leads to asthenospheric corner flow in the overriding plate, which is recorded by decreasing Nd (0.51234 to 0.51264) ratios over time in some segments. The close spatial relationship between arc magmatism, large-scale shear zones, and related strike-slip sedimentary basins in the Timok and Pangyurishte segments indicates mild transtension in these central segments of the restored arc. In contrast, the Eastern Srednogorie segment underwent strong orthogonal intraarc extension. Segmental distribution of tectonic stress may account for the concentration of rich porphyry Cu deposits in the transtensional segments, where lower crustal magma storage and fractionation favored the evolution of volatile-rich magmas.

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Adakite-like and Normal Arc Magmas: Distinct Fractionation Paths in the East Serbian Segment of the Balkan–Carpathian Arc

Cited by 66 publications

References 69 publications

Kinematic reconstructions and magmatic evolution illuminating crustal and mantle dynamics of the eastern Mediterranean region since the late Cretaceous

Kinematic reconstructions and magmatic evolution illuminating crustal and mantle dynamics of the eastern Mediterranean region since the late Cretaceous

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

Tectonic, magmatic, and metallogenic evolution of the Late Cretaceous arc in the Carpathian‐Balkan orogen

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