Shear-influenced partial melting in the Western Tatra metamorphic complex: Geochemistry and geochronology

Burda, Jolanta; Gawęda, Aleksandra

doi:10.1016/j.lithos.2009.01.010

Cited by 35 publications

(33 citation statements)

References 28 publications

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“…The same authors obtained partial melting and migmatization U-Pb zircon age at 335 Ma, which is ca. 30 Ma younger than the migmatization and partial melting age obtained for the metamorphic complex of the Western Tatra Mountains (367-358 Ma; Burda and Gawęda, 2009).…”

Section: Introductionmentioning

confidence: 70%

U-Pb zircon age of the youngest magmatic activity in the High Tatra granites (Central Western Carpathians)

2013

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Detailed cathodoluminescence (CL) imaging of zircon crystals, coupled with Laser Ablation Multi-Collector Inductively Coupled Plasma Mass Spectrometry (LA-MC-ICP-MS) U-Pb zircon dating was used to develop new insights into the evolution of granitoids from the High Tatra Mountains. The zircon U-Pb results show two distinct age groups (350±5 Ma and 337±6 Ma) recorded from cores and rims domains, respectively. Obtained results point that the last magmatic activity in the Tatra granitoid intrusion occurred at ca. 330 Ma. The previously suggested age of 314 Ma reflects rather the hydrothermal activity and Pb-loss, coupled with post-magmatic shearing.

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Section: Introductionmentioning

confidence: 70%

U-Pb zircon age of the youngest magmatic activity in the High Tatra granites (Central Western Carpathians)

2013

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“…Their presence is also correlated with partially molten metapelitic xenoliths (Pawlica 1913;Gawęda 2009). When tourmaline is lacking in the pegmatite-like pockets, brecciation is not observed (compare Fig.…”

Section: Sample Descriptionmentioning

confidence: 97%

“…Metamorphic rocks are preserved mostly in the western part of the massif, the Western Tatra Mountains (Fig. 1b) and were intensively migmatized at c. 360 Ma (Burda and Gawęda 2009). Inside the Western Tatra metamorphic envelope, tourmaline-bearing pegmatites are present.…”

Section: Geological Settingmentioning

confidence: 99%

“…The tongue-shaped Tatra granitoid intrusion (Kohút and Janák 1994) consists of several magmatic pulses, all dated by the U-Pb method on zircon: I-type mingled hybrid quartz diorite, interpreted as a mafic precursor and dated at 368 ± 8 Ma, tonalite-granodiorite showing an age interval of 360-370 Ma, syenogranite-monzogranite, locally porphyritic, rich in xenoliths and mafic microgranular enclaves, dated from 350 ± 5 Ma to 337 ± 6 Ma (Poller et al 2000;Gawęda et al 2005;Gawęda 2008Gawęda , 2009Burda et al 2011Burda et al , 2013. Formerly, these granites were dated at 314 ± 4 Ma (Poller and Todt 2000) but this age was later interpreted as to be influenced by the Pb-loss caused by post-magmatic shearing (Gawęda 2009).…”

Section: Geological Settingmentioning

confidence: 99%

“…8). Given that the calibrated pressure for different parts of the Tatra granite Pluton was 4.5-6 kbar (Ludhová and Janák 1999;Gawęda et al 2005;Gawęda 2009;Burda et al 2011;Gawęda and Szopa 2011), it could have exceeded the lithostatic pressure, favouring hydrofracturing of the internal pegmatitic components as well as of the host granite. Crystallization inside the distant fracture zones (T2), calibrated for the unzoned, syntectonic muscovite (Fig.…”

Section: Crystallization Conditionsmentioning

confidence: 99%

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Age and origin of the tourmaline-rich hydraulic breccias in the Tatra Granite, Western Carpathians

Gawęda¹,

Müller²,

Stein³

et al. 2013

J. Geosci.

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In the crystalline basement of the Tatra Mountains (Poland/Slovakia) two types of tourmaline-rich breccia zones are described, both having originated from magmatic fluids and showing a 350 ± 1 Ma Re-Os model age. Both T1 brecciated pegmatites and T2 vein-breccias are cemented by a tourmaline-quartz matrix. In T1 breccias, the metasomatic replacement of feldspars by tourmaline and overgrowths of small Tur 2 tourmalines on the primary pegmatitic Tur 1 tourmaline crystals suggest an important role for metasomatic processes. The microcrystalline nature of the quartz-tourmaline matrix and high vacancy ratios in the X-site in tourmaline from T2 breccias reflect relatively rapid crystallization from an oxidized fluid. The formation of both types of breccias is related to the internal structure of the Tatra granitoid intrusion. The layered character of the granitoid body probably stimulated the formation of pegmatite-like pockets, with local overpressure causing metasomatic alteration, rock brecciation and cementation by tourmaline (T1 breccias), the final hydrofracturing of overburden rocks and fluid escape. The resulting fracture zones (T2) are interpreted as the paths for fluid migration and rapid crystallization as the pressure and temperature dropped from 7.5-6 kbar and 630-570 ºC in the case of the T1 brecciated pegmatites to 2.5-1.5 kbar and 465-430 ºC in the vein T2 breccias.

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Deep structure of the Pieniny Klippen Belt in Poland

et al. 2019

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Shear-influenced partial melting in the Western Tatra metamorphic complex: Geochemistry and geochronology

Cited by 35 publications

References 28 publications

U-Pb zircon age of the youngest magmatic activity in the High Tatra granites (Central Western Carpathians)

U-Pb zircon age of the youngest magmatic activity in the High Tatra granites (Central Western Carpathians)

Age and origin of the tourmaline-rich hydraulic breccias in the Tatra Granite, Western Carpathians

Deep structure of the Pieniny Klippen Belt in Poland

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