Middle Miocene volcanism in the vicinity of the Middle Hungarian zone: Evidence for an inherited enriched mantle source

Kovàcs, István; Szabolcs, Harangi

doi:10.1016/j.jog.2007.06.002

Cited by 61 publications

(50 citation statements)

References 136 publications

(257 reference statements)

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“…Considering paleomagnetic rotations (Márton & Fodor 1995, 2003, paleogeographic (Kázmér & Kovács 1985;Csontos & Vörös 2004) and geodynamic implications (Kovács et al 2007;Schmid et al 2008;Kovács & Szabó 2008;Ustaszewski et al 2008), the Balaton line is the continuation of the Periadriatic Line, separating the Eastern and Southern Alps. Because the name comes from lake Balaton ( Fig.…”

Section: Geological Settingmentioning

confidence: 99%

Strike-slip reactivation of a Paleogene to Miocene fold and thrust belt along the central part of the Mid-Hungarian Shear Zone

Palotai¹,

Csontos²

2010

Geologica Carpathica

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Abstract:Recently shot 3D seismic data allowed for a detailed interpretation, aimed at the tectonic evolution of the central part of the Mid-Hungarian Shear Zone (MHZ). The MHZ acted as a NW vergent fold and thrust belt in the Late Oligocene. The intensity of shortening increased westwards, causing clockwise rotation of the western regions, relatively to the mildly deformed eastern areas. Blind thrusting and related folding in the MHZ continued in the Early Miocene. Thrusting and gentle folding in the MHZ partly continued in the earliest Pannonian, and was followed by sinistral movements in the whole MHZ, with maximal displacement along the Tóalmás zone. Late Pannonian inversion activated thrusts and generated transpressional movements along the Tóalmás zone.

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Section: Geological Settingmentioning

confidence: 99%

Strike-slip reactivation of a Paleogene to Miocene fold and thrust belt along the central part of the Mid-Hungarian Shear Zone

Palotai¹,

Csontos²

2010

Geologica Carpathica

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“…The rate of the thinning was nearly the same in the crust (β) and in the mantle lithosphere (δ) (β = δ = 1.4-1.6, Huismans et al 2001). Widespread calc-alkaline and rare ultrapotassic volcanism accompanied this extensional phase in the Middle Miocene (Harangi et al 1995, Kovács andSzabó 2008;Lexa et al 2010). The thinning of the crust was negligible (β = 1.1) compared to the thinning of the mantle lithosphere (δ = 4-8) in the second rifting phase (12-11 Ma) (Huismans et al 2001).…”

Section: Geologymentioning

confidence: 98%

Melting, fluid migration and fluid-rock interactions in the lower crust beneath the Bakony-Balaton Highland volcanic field: a silicate melt and fluid inclusion study

et al. 2015

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Plio-Pleistocene alkali basalt hosted mafic garnet granulite xenoliths were studied from the Bakony-Balaton Highland Volcanic Field (BBHVF) to trace fluid-melt-rock interactions in the lower crust. Two unique mafic garnet granulite samples were selected for analyses (optical microscopy, microthermometry, electron microprobe, Raman and IR spectroscopy), which contain clinopyroxene-plagioclase vein and patches with primary silicate melt inclusions (SMI). The samples have non-equilibrium microtexture in contrast with overwhelming majority of previously studied mafic garnet granulite xenoliths. Primary silicate-melt inclusions were observed in plagioclase, clinopyroxene and ilmenite in both xenoliths. The SMI-bearing minerals located randomly in Mi26 and in a clinopyroxene-plagioclase vein on the edge of Sab38 granulites. Petrography, fluid and melt inclusion study suggests that at least three fluid events occurred in the deep crust represented by these xenoliths. 1. Primary CO2-dominated±CO±H2S fluid inclusions were observed in the wall-rock part of Sab38 xenolith. 2. The crystallization of new clinopyroxene from melt, with CO2+H2O fluid. 3. The crystallization of new plagioclase occurred in a heterogeneous fluid-melt system with additional N2 and CH4 during crystallization. A local reaction was observed between sphene and acidic melt, which formed ilmenite+clinopyroxene+plagioclase±orthopyroxene.The 'water' content of the rock forming minerals was determined by infrared spectroscopy. The calculated bulk 'water' content of the Mi26 xenolith is 171±51 ppm Powered by Editorial Manager® and ProduXion Manager® from Aries Systems Corporationwt. %. The bulk wall rock part of the Sab38 granulite contains 55±17 ppm wt. % of 'water', whereas the bulk plagioclase-clinopyroxene vein contains 278±83 ppm wt. %. These results imply a very dry lower crust, locally hydrated by percolating fluids and melts.Response to Reviewers: Replies to the comments of the Reviewer #1 and to the general comments of Reviewer #2.Reviewer #1: Page 2 Line 49: thinner or thicker?We corrected the word in question.Page 3 Line 18: Please describe the precision and accuracy of the energy-dispersive method.We clarified the asked method in the 'Analytical technique' section.Page 3 Line 46: "atmpspheric" should be "atmospheric". We corrected the word in question. Page 4 Line 6: Please delete the word "selected" or "studied". We deleted the unnecessary word.Page 6 line 7: Please describe how you estimate the errors of P-T. Sources of error considered include: accuracy of the experimentally located, barometric end-member reaction, volume measurement errors, analytical imprecision, uncertainty of electron microprobe standard compositions, thermometer calibration errors, variation in the different mineral assemblage activity models, and compositional heterogeneity of natural minerals (Kohn and Spear, 1991). We clarified the asked method in the 'Geothermo-barometry' section. Page 6 Line 50: "isochor" should be "isochore". We corrected the world in ques...

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“…The present diverging shape of the proposed arc has been achieved by considerable shear and rotations of those lithospheric blocks. Kovács and Szabó (2008) discussed also the origin of the Middle Miocene calcalkaline volcanic rocks. Similarly, as proposed previously by Lexa and Konečný (1998) and Harangi et al (2001 they suggest that there is no direct relationship between active subduction and the magmatic activity and the magmas were generated by melting of the lithospheric mantle metasomatized by a former subduction event.…”

Section: Geochemistry Petrogenesis and Geodynamic Relationships Of Tmentioning

confidence: 99%

“…Melting in the lithospheric mantle of the Alcapa unit was triggered by the extension during the formation of the Pannonian Basin as discussed by Harangi and Lenkey (2007). What is new in the model proposed by Kovács and Szabó (2008) is that they invoke that source-enrichment occurred via the subduction of either the Budva-Pindos or Vardar Oceans. The Alcapa microplate was transferred to its present tectonic position via extrusion and rotations.…”

Section: Geochemistry Petrogenesis and Geodynamic Relationships Of Tmentioning

confidence: 99%

Hungarian national report on IAVCEI 2007–2010

Dobosi

Harangi

2011

Acta Geodaetica et Geophysica Hungarica

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This report covers the research activity belonging to the topics of IAVCEI that has been carried out during the past four years period between 2007 and 2010. The most significant results were obtained in the geochemical, petrological and structural investigation of the young (mainly Miocene and Plio-Pleisticene) volcanism in the Carpathian-Pannonian Region, and in the complex study of the upper mantle xenoliths beneath this region. The research topics and new results will be presented according to the following classification: Palaeozoic and Mesozoic intrusive magmatism in the Carpathian-PannonianRegion including the Variscan granitoids and the Mesozoic Ditrȃu alkaline complex.2. Paleogene-Neogene and Quaternary volcanism in the Carpathian-Pannonian Region.3. The upper mantle and lower crust beneath the Carpathian-Pannonian area based on the study of xenoliths 4. Studies based on international co-operation.

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Middle Miocene volcanism in the vicinity of the Middle Hungarian zone: Evidence for an inherited enriched mantle source

Cited by 61 publications

References 136 publications

Strike-slip reactivation of a Paleogene to Miocene fold and thrust belt along the central part of the Mid-Hungarian Shear Zone

Strike-slip reactivation of a Paleogene to Miocene fold and thrust belt along the central part of the Mid-Hungarian Shear Zone

Melting, fluid migration and fluid-rock interactions in the lower crust beneath the Bakony-Balaton Highland volcanic field: a silicate melt and fluid inclusion study

Hungarian national report on IAVCEI 2007–2010

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