Preservation of magmatic signals in metavolcanics from Wedel Jarlsberg Land, SW Svalbard

• Autorzy: Gołuchowska K. , Barker A. K. , Majka J. , Manecki M. , Czerny J. , Bazarnik J.

Identyfikatory

DOI

10.2478/v10002-012-0007-1

• Języki publikacji: EN

Abstrakty

EN

The purpose of this study is to determine the role of metamorphism and thereby identify the preserved magmatic signature in metavolcanics from Wedel Jarlsberg Land in southwestern Svalbard. Samples have been collected from late Precambrian metavolcanics occurring within metasedimentary rocks of the Sofiebogen Group, as well as dikes cutting older metasedimentary rocks of the Deilegga Group. The volcanic rocks were metamorphosed under greenschist facies conditions during the Caledonian Orogeny. To investigate the role of metamorphism, we present petrography, major and trace element geochemistry, and use factor analysis as a tool to identify correlations that correspond to primary magmatic signals. The metavolcanics are classified as subalkaline basalt to basaltic andesite and they contain relicts of primary clinopyroxene and plagioclase. The metamorphic minerals are actinolite, secondary plagioclase, chlorite and minerals belonging to the epidote group. Major element variations are highly scattered with no obvious trends observed. The HFSE and REE show strong trends attributed to fractional crystallization. The LILE, Th and La show elevated contents in some samples. Factor analysis shows that the HFSE and REE are well correlated. The LILE form a separate well correlated group, while the major elements are not correlated, except for Na2O, Fe2O3 and CaO. The lack of correlation for major elements, as well as the lack of observed fractional crystallization trends between these elements suggests that they were modified by metamorphism. The strong correlation of HFSE and REE reflects the original geochemical signal generated by magmatic processes. The correlation of the LILE is consistent with their elevated composition implying the influence of crustal contamination processes, and though some variability is likely superimposed due to metamorphism, the primary magmatic record is not completely destroyed. We conclude that the HFSE and REE are not influenced by metamorphic processes and therefore provide robust records of magmatic processes.

Słowa kluczowe

EN

Neoproterozic; Svalbard; metavolcanics; Factor Analysis

• Wydawca: Mineralogical Society of Poland
• Czasopismo: Mineralogia
• Rocznik: 2012
• Tom: Vol. 43, iss. 3/4
• Strony: 179--197
• Opis fizyczny: Bibliogr. 38 poz., rys., tab., wykr.

Twórcy

autor

Gołuchowska K.

• AGH – University of Science and Technology, al. Mickiewicza 30, PL-30-059 Krakow, Poland
• CEMPEG, Dept. Earth Sciences, Uppsala University, Villavägen 16, SE-752 36 Uppsala, Sweden

autor

Barker A. K.

• CEMPEG, Dept. Earth Sciences, Uppsala University, Villavägen 16, SE-752 36 Uppsala, Sweden

autor

Majka J.

• CEMPEG, Dept. Earth Sciences, Uppsala University, Villavägen 16, SE-752 36 Uppsala, Sweden

autor

Manecki M.

• AGH – University of Science and Technology, al. Mickiewicza 30, PL-30-059 Krakow, Poland

autor

Czerny J.

• AGH – University of Science and Technology, al. Mickiewicza 30, PL-30-059 Krakow, Poland

autor

Bazarnik J.

• Institute of Geological Sciences, Polish Academy of Sciences, Research Centre in Kraków, Senacka St. 1, PL-31002 Kraków, Poland

Bibliografia

• Anczkiewicz, R., Platt, J. P., Thirlwall, M. F., & Wakabayashi, J. (2004). Franciscan subduction off to a slow start: evidence from high precision Lu-Hf garnets ages on high grade-blocks. Earth and Planetary Science Letters, 225(1-2), 147–161. DOI: 10.1016/j.epsl.2004.06.003.
• Anczkiewicz, R., & Thirlwal, M. F. (2003). Improving precision of Sm-Nd garnet dating by H2SO4 leaching: a simple solution to the phosphate inclusion problem. In D. Vance, W. Mueller & I. M. Villa (Eds.), Geochronology: Linking the Isotopic Record with Petrology and Textures (pp. 83–91). Special Publications, 220. London: Geological Society.
• Arghe, F., Skelton, A., & Pitcairn, I. (2011). Spatial coupling between spilitization and carbonation of basaltic sills in SW Scottish Highlands: evidence of a mineralogical control of metamorphic fluid flow. Geofluids, 11(3), 245–259. DOI: 10.1111/j.1468-8123.2011.00335.x.
• Armstrong, H. A., Nakrem, H. A., & Otha, Y. (1986). Ordovician conodonts from the Bulltinden Formation, Motalafjella, central-western Spitsbergen. Polar Research, 4(1), 17–23. DOI: 10.1111/j.1751-8369.1986.tb00514.x.
• Balashov, Y. A., Peucat, J. J., Tebenkov, A. M., Ohta, Y., Larionov, A. N., Sirotkin, A. N., & Bjørnerud, M. (1996). Rb-Sr whole rock and U-Pb zircon datings of the granitic-gabroic rocks from Skålfjellet Subgroup, southwest Spitsbergen. Polar Research, 15(2), 167–181. DOI: 10.1111/j.1751-8369.1996.tb00467.x.
• Balashov, Y. A., Tebenkov, A. M., Ohta, Y., Larionov, A. N., Sirotkin, A. N., Gannibal, L. F., & Ruyngenen, G. I. (1995). Grenvillian U-Pb zircon ages of quartz porphyry and rhyolite clasts in a metaconglomerate at Vimsodden, southwestern Spitsbergen. Polar Research, 14(3), 291–302. DOI: 10.1111/j.1751-8369.1995.tb00716.x.
• Bernard-Griffiths, J., Peucat, J. J., & Otha, Y. (1993). Age and nature of protoliths in the Caledonian blueschisteclogite complex of western Spitsbergen: a combined approach using U-Pb, Sm-Nd and REE whole-rocks system. Lithos, 30(1), 81–90. DOI: 10.1016/0024-4937(93)90007-Y.
• Birkenmajer, K. (1991). The Jarlsbergian unconformity (Proterozoic/Cambrian boundary) and the problem of Varangian tillites in South Spitsbergen. Polish Polar Research, 12(3), 269–278.
• Bjørnerud, M. (1990). An Upper Proterozoic unconformity in northern Wedel Jarlsberg Land, southwest Spitsbergen: Lithostratigraphy and tectonic implications. Polar Research, 8(2), 127–139. DOI: 10.1111/j.1751-8369.1990.tb00381.x.
• Czerny, J. (1999). Petrogenesis of metavolcanites of the southern part of Wedel Jarlsberg Land (Spitsbergen). Prace Mineralogiczne, 86. Kraków: Wydawnictwo Oddziału PAN.
• Czerny, J., Kieres, A., Manecki, M., Rajchel, J. (1993). Geological map of the SW part of Wedel Jarlsberg Land, Spitsbergen, 1:25 000. A. Manecki (Ed.), Kraków: Institute of Geology and Mineral Deposits AGH.
• Czerny, J., Majka, J., Gee, D. G., Manecki, A., & Manecki, M. (2010). Torellian Orogeny: evidence of a Late Proterozoic tectonometamorphic event in southwestern Svalbard’s Caledonian basement. 29th Nordic Geological Winter Meeting, 11-13 January 2010 (pp. 35-36). Oslo, Norway. NGF Abstract and Proceedings of the Geological Society of Norway.
• Dallman, W. K., Hjelle, A., Otha, Y., Salvigsen, O., Maher, H. D., Bjørnerud, M., Hauser, E. C., & Craddock, C. (1990). Geological map of Svalbard 1:100,000, B11G Van Keulenfjorden. With description. Norsk Polarinstitutt Temakart, No. 15.
• Dallmeyer, R. D., Peucat, J. J. , & Otha, Y. (1990). Tectonothermal evolution of contrasting methamorphic complexes in northwestern Spitsbergen (Biskayerhalvøya): Evidence from 40Ar/39Ar and Rb-Sr mineral ages. Geological Society of America Bulletin, 102(5), 653–663. DOI: 10.1130/0016-7606(1990)102<0653:TEOCMC>2.3.CO;2.
• Davis, J. C. (1986). Statistics and Data Analysis in Geology (2 ed.). New York: John Wiley & Sons.
• Frey, F. A., Weis, D., Borisova, A. Y., & Xu, G. (2002). Involvement of continental crust in the Formation of the Cretaceous Kerguelen Plateau: New perspectives from ODP Leg 120 Sites. Journal of Petrology, 43(7), 1207–1239. DOI: 10.1093/petrology/43.7.1207.
• Gee, D. G. (1986). Svalbard’s Caledonian terranes reviewed. Geologiska Föreningens Stockholm Förhandlingar, 108, 284–286.
• Gee, D. G., & Page, L. M. (1994). Caledonian Terrane assembly on Svalbard: New evidence from Ar/Ar dating in Ny Friesland. American Journal of Science, 294(9), 1166–1186. DOI: 10.2475/ajs.294.9.1166.
• Gee, D. G., & Tebenkov, A. M. (2004). Svalbard: a fragment of the Laurentian margin. In D. G. Gee & V. Pease (Eds), The Neoproterozoic Timanide Orogen of Eastern Baltica. Geological Society, London, Memoirs, 30, 191–206. DOI: 10.1144/GSL.MEM.2004.030.01.16.
• Harland, W. B., Hambry, M. J. & Waddams, P. (1993). The Vendian geology of Svalbard. Norsk Polarinstitutt Skrifter, 193, 1-130. Oslo: Norwegian Polar Institute.
• Higuchi, H., & Nagasawa, H. (1969). Partition of trace elements between rock-forming minerals and the host volcanic rocks. Earth and Planetary Science Letters, 7(3), 281-287. DOI: 10.1016/0012-821X(69)90066-1.
• Jones, R. H., & Layne, G. D. (1997). Minor and trace element partitioning between pyroxene and melt in rapidly cooled chondrules. American Mineralogist, 82(5-6), 534-545.
• Larionov, A. N., Tebenkov, A. M., Gee, D. G., Czerny, J., & Majka J. (2010). Recognition of Precambrian Tectonostratigraphy in Wedel-Jarlsberg Land, Sothwestern Spitsbergen. 29th Nordic Geological Winter Meeting, 11-13 January 2010 (pp. 106). Oslo, Norway. NGF Abstract and Proceedings of the Geological Society of Norway.
• Leeman, W. P., & Scheidegger, K. F. (1977). Olivine/liquid distribution coefficients and a test for crystal-liquid equilibrium. Earth and Planetary Science Letters 35(2), 247-257. DOI: 10.1016/0012-821X(77)90128-5.
• Majka J., Czerny J., Mazur S., Holm D.K., & Manecki M. (2010). Neoproterozoic metamorphic evolution of the Isbjørnhamna Group rocks, southwestern Svalbard. Polar Research, 29(3), 250-264. DOI: 10.1111/j.1751-8369.2010.00186.x.
• Majka J., Larionov A.N., Gee D.G., Czerny J., Pršek J. (2012). Neoproterozoic pegmatite from Skoddefjelet, Wedel Jarlsberg Land, Spitsbergen: Additional evidence for c. 640 Ma tectonothermal event in the Caledonides of Svalbard. Polish Polar Research 33(1), 1-17. DOI: 10.2478/v10183-012-0003-6.
• Majka J., Mazur S., Manecki M., Czerny J., & Holm D. K. (2008). Late Neoproterozoic amphibolite facies metamorphism of a pre-Caledonian basement block in southwest Wedel Jarlsberg Land, Spitsbergen: new evidence from U–Th–Pb dating of monazite. Geological Magazine, 145(6), 822– 830. DOI: 10.1017/S001675680800530X.
• Miller, R. L. & Kahn, J. S., (1962). Statistical Analysis in the Geological Science. New York: John Wiley and Sons.
• Manecki, M., Holm, D. K., Czerny, J., & Lux, D. (1998). Thermochronological evidence for late Proterozoic (Vendian) cooling in southwest Wedel Jarlsberg Land, Spitsbergen. Geological Magazine, 135(1), 63-69.
• Mazur, S., Czerny, J., Majka, J., Manecki, M., Holm, D., Smyrak, A., & Wypych, A. (2009). A strike slip terrane boundary in Wedel Jarlsberg Land, Svalbard, and its bearing on correlations of SW Spitsbergen with the Pearya terrane and Timanide belt. Journal of the Geological Society, 166(3), 529-544. DOI: 10.1144/0016-76492008-106.
• Onuma, N., Higuchi, H., Wakita, H., & Nagasawa, H. (1968). Trace element partition between two pyroxenes and the host lava. Earth and Planetary Science Letters, 5(1), 47-51. DOI: 10.1016/S0012-821X(68)80010-X.
• Otha, Y. 1979. Blue schists from Motalafjella, western Spitsbergen. Norsk Polarinstitutt Skrifter, 167, 171–217. Oslo: Norwegian Polar Institute.
• Pearce, J. A. (2008). Geochemical fingerprints of oceanic basalts with application to ophiolite classification and the search for Archean oceanic crust. Lithos, 100(1-4), 14–48. DOI: 10.1016/j.lithos.2007.06.016.
• Peryt, T. M., Hryniv, S. P., & Anczkiewicz R. (2010). Strontium isotope composition of Badenian (Middle Miocene) Ca-sulphate deposite in West Ukraine: a preliminary study. Geological Quarterly 54(4), 465–476.
• Reimann, C., Filzmoser, P., & Garrett, R. G. (2002). Factor analysis applied to regional geochemical data: problems and possibilities. Applied Geochemistry, 17(3), 185–206. DOI: 10.1016/S0883-2927(01)00066-X.
• Rudnick, R. L., & Gao, S. (2003). The Composition of the Continental Crust. Treatise on Geochemistry, 3(1), 1–64. DOI: 10.1016/B0-08-043751-6/03016-4.
• Scrutton, C. T., Horseield, W. T., & Harland, W. B. (1976). Silurian fossils from western Spitsbergen. Geological Magazine, 113(6), 519-523. DOI: 10.1017/S0016756800041261.
• Skelton, A., Arghe, F., & Pitcairn, I. (2010). Regional mapping of pre-metamorphic spilitization and associated chemical mobility in greenschist-facies metabasalts of the SW Scottish Highlands. Journal of the Geological Society, 167(5), 1049–1061. DOI: 10.1144/0016-76492009-130.