Cambrian Zawidów granodiorites in the Cadomian Lusatian Massif (Central European Variscides): what do the SHRIMP zircon ages mean?

Białek, Dawid; Kryza, Ryszard; Oberc-Dziedzic, Teresa; Pin, Christian

doi:10.3190/jgeosci.179

Cited by 17 publications

(6 citation statements)

References 15 publications

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“…These Sudetic units have been re garded as east erly con tin u a tions of the Saxothuringian Terrane (Franke and ¯elaŸniewicz, 2000). Some of them, namely: the Lausitz-Izera Block, the Kamieniec Z¹bkowicki Belt and the Orlica-OEnie¿nik Dome com prise Early Or do vi cian (~500 Ma) metagranites and ac com pa ny ing mica schists, but the west ern part of the Lausitz-Izera Block is built of older, ~540 Ma Lusatian granodiorites (Linnemann and Romer, 2002;Bia³ek et al, 2014) which have not been found in the Kamieniec Z¹bkowicki Belt and the Orlica-OEnie¿nik Dome.…”

Section: Introductionmentioning

confidence: 99%

The Saxothuringian Terrane affinity of the metamorphic Stachów Complex (Strzelin Massif, Fore-Sudetic Block, Poland) inferred from zircon ages

Oberc-Dziedzic¹,

Kryza²,

Madej³

et al. 2018

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The Saxothuringian Terrane de fined in the west ern part of the Bo he mian Mas sif is re garded to have east erly con tin u a tions in the Karkonosze-Izera Mas sif, the Kamieniec Z¹bkowicki Belt and the Orlica-OEnie¿nik Dome. All these units com prise Early Or do vi cian (~500 Ma) metagranites as so ci ated with mica schists. Even more to the east, ~500 Ma metagranites and metasedimentary rocks oc cur also in the Strzelin Mas sif of the East Sudetes, where they are known as the pale and dark Stachów gneiss es, re spec tively. Al to gether, these rocks form the Stachów Com plex which was thrust on the Strzelin Complex of the Brunovistulicum Terrane dur ing the Variscan Orog eny. The con tri bu tion pres ents lines of ev i dence for a Saxothuringian af fin ity of the Stachów Com plex rocks: (1) the new SHRIMP U-Pb age data of zir cons from both the pale and dark Stachów gneiss es; (2) the in di ca tion that the zir con age spec tra from the ~500 Ma granitoids and their ac com pa ny ing metasedimentary rocks are sim i lar to those found in other parts of the Sudetes; (3) the "Armori can" age pat tern of in her ited zir cons of the pale Stachów gneiss es, as also ob served in the Saxothuringian Terrane; (4) the sim i lar ity of trace el e ments and Sm-Nd iso tope data of the Stachów gneiss es and cor re la tive rocks from the Karkonosze-Izera Mas sif and the Orlica-OEnie¿nik Dome.

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Section: Introductionmentioning

confidence: 99%

The Saxothuringian Terrane affinity of the metamorphic Stachów Complex (Strzelin Massif, Fore-Sudetic Block, Poland) inferred from zircon ages

Oberc-Dziedzic¹,

Kryza²,

Madej³

et al. 2018

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“…However, their mutual relationships differ in both parts of Sudetes. In the West Sudetes, the Cadomian Zawidów granodiorites were intruded by the 500 Ma old Rumburk granite (Białek et al 2014 and references therein) and the 500 Ma igneous protolith of the Izera orthogneisses. In turn, the Karkonosze granite intruded the Izera orthogneisses but not the Zawidów granodiorite.…”

Section: W E S T S U D E T E Smentioning

confidence: 99%

“…(1) Granitoids of the first age group are represented by the 544 ± 4 Ma old Zawidów granodiorite (Białek et al 2014), which belongs to the Cadomian Lusatian Massif, and by the Neoproterozoic (602-568 Ma: Oberc-Dziedzic et al 2003;Klimas 2008;Klimas et al 2009;Mazur et al 2010) Strzelin and Nowolesie gneisses of the Strzelin Massif (Figs 1c; 2).…”

Section: Granitoids In the Sudetesmentioning

confidence: 99%

Three generations of granitoids emplaced over a 300 My time span in the Strzelin Massif, Fore-Sudetic Block, SW Poland: mutual relationships and implications for secular crustal evolution

Oberc-Dziedzic¹,

Pin²,

Madej³

et al. 2016

Jour. Geosci.

Self Cite

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“…A homogenization of the Hf-isotopic composition in zircon requires an almost complete dissolution of inherited zircons (Farina et al 2014). However, inherited zircons are abundant in all Cadomian basement rocks of the Bohemian Massif (e.g., Tichomirowa et al 2001Tichomirowa et al , 2012Tichomirowa 2002;Friedl et al 2004;Białek et al 2014;Zieger et al 2018). In addition to frequent inherited zircons, all rocks from the Cadomian basement have very heterogeneous zircon Hf-and O-isotope composition as shown for the Saxothuringian basement of the Erzgebirge (Tichomirowa et al 2018) and of the Schwarzburg Antiform (Linnemann et al 2014).…”

Section: Identification Of Sources For Amphibolite-bearing and Biotite-bearing Granitesmentioning

confidence: 99%

Two-phase late Paleozoic magmatism (~ 313–312 and ~ 299–298 Ma) in the Lusatian Block and its relation to large scale NW striking fault zones: evidence from zircon U–Pb CA–ID–TIMS geochronology, bulk rock- and zircon chemistry

Käßner

Tichomirowa

Lapp³

et al. 2021

Int J Earth Sci (Geol Rundsch)

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Late Paleozoic (Variscan) magmatism is widespread in Central Europe. The Lusatian Block is located in the NE Bohemian Massif and it is part of the Saxothuringian Zone of the Variscan orogen. It is bordered by two major NW-trending shear zones, the Intra-Sudetic Fault Zone towards NE and the Elbe Fault Zone towards SW. The scarce Variscan igneous rocks of the Lusatian Block are situated close to these faults. We investigated 19 samples from Variscan plutonic and volcanic rocks of the Lusatian Block, considering all petrological varieties (biotite-bearing granites from the Koenigshain and Stolpen plutons, amphibole-bearing granites from three boreholes, several volcanic dykes, and two volcanites from the intramontane Weissig basin). We applied whole-rock geochemistry (18 samples) and zircon evaporation dating (19 samples). From the evaporation data, we selected six representative samples for additional zircon SHRIMP and CA–ID–TIMS dating. For the Koenigshain pluton, possible protoliths were identified using whole-rock Nd-isotopes, and zircon Hf- and O-isotopes. The new age data allow a subdivision of Variscan igneous rocks in the Lusatian Block into two distinct magmatic episodes. The spatial relation of the two age groups to either the Elbe Fault Zone (298–299 Ma) or the Intra-Sudetic Fault Zone (312–313 Ma) together with reports on the fault-bound character of the dated intrusions suggests an interpretation as two major post-collisional faulting episodes. This assumption of two distinct magmatic periods is confirmed by a compilation of recently published zircon U–Pb CA–ID–TIMS data on further Variscan igneous rocks from the Saxothuringian Zone. New geochemical data allow us to exclude a dominant sedimentary protolith for the Koenigshain pluton as supposed by previous investigations. This conclusion is mainly based on new O- and Hf-isotope data on zircon and the scarcity of inherited zircons. Instead, acid or intermediate igneous rocks are supposed as the main source for these I-type granitoids from the Koenigshain pluton.

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Cambrian Zawidów granodiorites in the Cadomian Lusatian Massif (Central European Variscides): what do the SHRIMP zircon ages mean?

Cited by 17 publications

References 15 publications

The Saxothuringian Terrane affinity of the metamorphic Stachów Complex (Strzelin Massif, Fore-Sudetic Block, Poland) inferred from zircon ages

The Saxothuringian Terrane affinity of the metamorphic Stachów Complex (Strzelin Massif, Fore-Sudetic Block, Poland) inferred from zircon ages

Three generations of granitoids emplaced over a 300 My time span in the Strzelin Massif, Fore-Sudetic Block, SW Poland: mutual relationships and implications for secular crustal evolution

Two-phase late Paleozoic magmatism (~ 313–312 and ~ 299–298 Ma) in the Lusatian Block and its relation to large scale NW striking fault zones: evidence from zircon U–Pb CA–ID–TIMS geochronology, bulk rock- and zircon chemistry

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