Strontium isotope ratios and REE geochemistry in the Suwałki anorthosites, NE Poland

• Autorzy: Wiszniewska J.
• Języki publikacji: EN

Abstrakty

EN

Strontium isotope ratios for 14 samples of anorthositic rocks in the Suwałki Anorthosite Massif (SAM) range from 0.704875 to 0.705772. The same isotopic ratios calculated for 1.5 Ga (the U-Pb zircon age of the rapakivi-like granites from adjacent Mazury Complex) range from 0.704583 to 0.705483. The corresponding eSr1500 values for the same rocks range from 25.5 to 39.0. The pronounced Eu anomaly which characterises the REE distribution in the anorthosite plagioclase is consistent with early crystallization from basic magma.

Słowa kluczowe

EN

Suwałki Anorthosite Massif; strontium ratio; REE geochemistry

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Geological Quarterly
• Rocznik: 2000
• Tom: Vol. 44, Nr 2
• Strony: 183--186
• Opis fizyczny: tab., wykr., bibliogr 12 poz.

Twórcy

autor

Wiszniewska J.

• Państwowy Instytut Geologiczny, Rakowiecka 4, PL-00-975 Warszawa, Poland

Bibliografia

• 1. CLAESSON S., SUNDBLAD K., RYK.A W. and MOTUZA G. (1995) - The Mazury Complex in N Poland, rapakivi granites and the SE-wards extension of the Fennoscandian Shield. 22nd Nordic Geological Winter Meeting, 8-11 January in Turku-Abo. Finland.
• 2. DEMAIFFE D.,WEIS D., MICH OT J. and DUCHESNE J-C.(1986) - Isotopic constraints on the genesis of the Rogaland anorthosite suite (south-west Norway). Chem. Geol., 57: 167-179.
• 3. DEPCIUCH T., LIS J. and SYLWESTRZAK H. (1975) - K-Ar age of the rocks of the crystalline basement of northeast. Poland (in Polish with English summary). Kwart. Geol., 19 (4): 759-778.
• 4. FAURE G. AND POWELL J. L. (1972) - Strontium Isotope Geology. Minerals, Rocks and Inorganic Materials. Springer Verlag.
• 5. GRIFFIN W. L., SUNDVOLL F. and KRISTMANNDOTTIR H. (1974) - Trace clement composition of anorthosite plagioclase. Earth Planel. Sci. Lett., 24: 213-223.
• 6. JARMOŁOWICZ-SZULC K. (1990) Geochronological data of the Suwałki Anorthosite Massif. Arch. Miner., 44 (2): 59-68.
• 7. KUBICKI S. and RYKA W. (1982) - Geological atlas of crystalline basement in Polish part of East European Platform, Wyd. Geol. Warszawa.
• 8. MORGAN J., STEIN H. J., HANNAH J. L., MARKEY R. and WISZNIEWSKA J. (in press) - Rc-Os study of Fc-T-V oxide and Fc-Cu-Ni sulfide deposits, Suwałki Anorthosite Massif, northeastern Poland. Miner. Deposita.
• 9. OWENS B. E., DYMEK R. F., TUCKER J. C., BRANNON J.C. and PODOSEK F. A. (1994) - Age and radiogenic isotopic composition of a late- to post-tectonic anorthosite in the Grenville Province: the Labrieville massif, Quebec. Lithos, 31: 189-206.
• 10. SUNDBLAD K., MANSFELD J., MOTUZA G., AHL M. and CLAESSON S. (1994) - Geology, geochemistry and age of a Cu-Mo-bearing granite al Kabeliai, southern Lithuania. Miner. Petrol., 50: 43-57.
• 11. STEIN H, J., MORGAN J., MARKE Y R. and WISZNIEWSKA J. (1998) - Re-Os study of the Suwałki Anorthosite Massif, NE Poland. Geophys. J., Abstract, 20: 111-114.
• 12. WISZNIEWSKA J., DUCHESNE J-C., CLAESSON S., STEIN H. and MORGAN J. (1999) - Geochemical constrains on the origin of the Suwałki Anothositc Massif and related Fe-Ti-V ores, NE Poland, Journal of Conference Abstracts on EUG 10, 4 (I).