SHRIMP wspiera szczegółową kartografię geologiczną w Sudetach

• Autorzy: Cymerman Zbigniew , Krzemińska Ewa

Identyfikatory

DOI

10.7306/2024.54

Warianty tytułu

EN

SHRIMP supports detailed geological cartography in the Sudetes

• Języki publikacji: PL

Abstrakty

EN

For the first time, at the beginning of the 2nd edition of the Detailed Geological Map of the Sudetes 1 : 25,000, new, extended geochronological studies using the U-Pb method on zircons by means of the modern SHRIMP device were planned. They were completed by chemical dating of monazites with the WDS Cameca Sx100 electron microprobe. As a result of age studies about 920 new U-Pb zircon analyses were obtained from 28 samples of the several important rock-types of the Góry Sowie Metamorphic Complex, which significantly expands the scope of radiometric age record in this area. Apart from age, other diagnostic parameters were also used, such as Th/U ratios in zircon. They allow better understanding of the extremely complicated tectonometamorphic evolution of the Góry Sowie Metamorphic Complex during the complex orogenic processes in the Paleozoic in the NE part of the Bohemian Massif.

Słowa kluczowe

PL

mapa geologiczna; migmatyty; geochronologia cyrkonu U-Pb; wiek protolitu

EN

geological map; migmatites; U-Pb zircon geochronology; age of protolith

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Przegląd Geologiczny
• Rocznik: 2024
• Tom: Vol. 72, nr 12-1
• Strony: 719--722
• Opis fizyczny: Bibliogr. 14 poz., wykr.

Twórcy

autor

Cymerman Zbigniew

• Emerytowany pracownik Państwowego Instytutu Geologicznego - Państwowego Instytutu Badawczego

• https://orcid.org/0000-0002-6056-0830

autor

Krzemińska Ewa

• Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy, ul. Rakowiecka 4, 00-975 Warszawa

• https://orcid.org/0000-0002-6832-8104

Bibliografia

• 1. BROWN M. 1973 - The definition of metatexis, diatexis and migmatite. Proc. Geol. Associat., 84: 371-382.
• 2. CYMERMAN Z. 1998 - The Góry Sowie Terrane: a key to understanding the Palaeozoic evolution of the Sudetes area and beyond. Geol. Quart., 42 (4): 379-400.
• 3. JASTRZĘBSKI M., BUDZYŃ B., ŻELAŹNIEWICZ A., KONEČNÝ P., SLÁMA J., KOZUB-BUDZYŃ G., SKRZYPEK E., JAŻWA A. 2021 - Eo-Variscan metamorphism in the Bohemian Massif: Thermodynamic modelling and monazite geochronology of gneisses and granulites of the Góry Sowie Massif, SW Poland. J. Metamorph. Geol., 39: 751-779.
• 4. KRÖNER A., HEGNER E. 1998 - Geochemistry, single zircon ages and Sm-Nd systematics of granitoid rocks form the Góry Sowie (Owl Mts), Polish West Sudetes: evidence for early Palaeozoic arc-related plutonism. J. Geol. Soc., 155: 711-724.
• 5. KRYZA R., FANNING C.M. 2007 - Devonian deep-crustal processes and uplift in the Variscan Orogen: evidence from SHRIMP zircon ages from the HT-HP granulites and migmatites of the Góry Sowie (Polish Sudetes). Geodinam. Acta, 20: 159-175; https://doi.org/10.3166/ga.20.159-175
• 6. OBERC J. 1968 - Prekambr. Sudety. [W:] Budowa Geologiczna Polski, tom 1. Stratygrafia, część 1: 63-102.
• 7. OBERC J. 1977 - The Pre-Assyntian and Assyntian(Baikalian) elements in South-Western Poland. [W:] Geology of Poland, IV. Tectonics: 99-173.
• 8. O’BRIEN P.J., KRÖNER A., JAECKEL P., HEGNER E., ŻELAŹNIEWICZ A., KRYZA R. 1997 - Petrological and isotopic studies on Palaeozoic high pressure granulites with a medium pressure overprint, Góry Sowie (Owl) Mts., Polish Sudetes. J. Petrolog., 38: 433-456.
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• 10. RUBATTO D. 2002 - Zircon trace element geochemistry: partitioning with garnet and the link between U-Pb ages and metamorphism. Chem. Geol., 184: 123-138.
• 11. RUBATTO D., HERMANN J., BUICK I.S. 2006 - Temperature and Bulk Composition Control on the Growth of Monazite and Zircon During Low-pressure Anatexis (Mount Stafford, Central Australia). J. Petrol., 47: 1976-1996; https://doi.org/10.1093/petrology/egl033
• 12. TABAUD A.S., ŠTIPSKÁ P., MAZUR S., SCHULMANN K., MÍKOVÁ J., WONG J., SUN M. 2021 - Evolution of a Cambro-Ordovician active margin in northern Gondwana: Geochemical and zircon geochronological evidence from the Góry Sowie metasedimentary rocks, Poland. Gondwana Res., 90: 1-26; https://doi.org/10.1016/j.gr.2020.10.011
• 13. VAN BREEMEN O., BOWES D.R., AFTALION M., ŻELAŹNIEWICZ A. 1988 - Devonian tectonothermal activity in the Góry Sowie gneissic block, Sudetes, southwestern Poland: evidence from Rb-Sr and U-Pb isotopic studies. Ann. Soc. Geol. Pol., 58: 3-19.
• 14. YAKYMCHUK C., KIRKLAND C.L., CLARK C. 2018 - Th/U in metamorphic zircons. J. Metamorph. Geol., 36: 715-737.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).