1.90-1.88Ga arc magmatism of central Fennoscandia: geochemistry, U-Pb geochronology, Sm-Nd and Lu-Hf isotope systematics of plutonic-volcanic rocks from southern Finland
DOI:
https://doi.org/10.1344/GeologicaActa2018.16.1.1Keywords:
Fennoscandian shield, Svecofennian orogeny, Lu-Hf, U-Pb, Sm-Nd, geochemistryAbstract
The earliest Svecofennian magmatism in southern Finland has been dated at 1.90-1.88Ga. As an example of this, the Orijärvi (ca. 1.89Ga) and Enklinge (ca. 1.88Ga) volcanic centres comprise bimodal plutonic batholiths surrounded by volcanic rocks of comparable ages and chemical compositions. Here, we report geochemical and Sm-Nd isotope data from intrusive and extrusive samples, combined with zircon U-Pb and Lu-Hf isotopes for granodiorites from both study areas. The samples range from gabbros to granites and indicate a subduction-related continental margin setting. The zircons from the Orijärvi granodiorite define an age of 1892±4Ma whereas the Enklinge granodiorite yields an age of 1882±6Ma. Several inherited ages of 2.25-1.95Ga as well as younger ages of 1.86-1.80Ga were found in the Enklinge granodiorite. The initial εNd values from the mafic rocks from both locations fall in the range +1.1 to +2.9 whereas the felsic rocks exhibit initial εNd values of -0.4 to +1.2. The magmatic zircons from the Orijärvi and Enklinge granodiorites show average initial εHf values of -1.1 (at 1892Ma) and zero (at 1882Ma), respectively, each with a spread of about 7 ε-units. The initial εHf values for the inherited zircons from Enklinge range from +3.5 to +7.6 with increasing age. The Sm-Nd data indicate that the mafic rocks were derived from a “mildly depleted” mantle source while the felsic rocks show larger crustal contribution. Also, the variation in εHf values indicates minor mixing between mildly depleted mantle derived magmas and crustal sources. U-Pb ages and Hf isotopes for inherited zircons in the Enklinge granodiorite suggest the presence of juvenile Svecofennian “proto-crust” at depth.
References
Albarède, F., 2005. The survival of mantle geochemical heterogeneities. In: van der Hilst, R.D., Bass, J.D., Matas, J., Trampert, J., (eds.). Earth’s Deep Mantle: Structure, Composition, and Evolution. American Geophysical Union, 27-46.
Andersen, T., Griffin, W.L., Jackson, S.E., Knudsen, T.-L., Pearson, N.J., 2004. Mid-Proterozoic magmatic arc evolution at the southwest margin of the Baltic Shield. Lithos, 73, 289-318.
Andersen, T., Andersson, U.B., Graham, S., Åberg, G., Simonsen, S.L., 2009. Granitic magmatism by melting of juvenile continental crust: new constraints on the source of Palaeoproterozoic granitoids in Fennoscandia from Hf isotopes in zircon. Journal of the Geological Society, 166, 233-247.
Andersson, U.B., 1997. Petrogenesis of Some Proterozoic Granitoid Suites and Associated Basic Rocks in Sweden: geochemistry and isotope geology. Sveriges Geologiska Undersökning, 91, 1-216.
Andersson, U.B., Neymark, L.A., Billström, K., 2001. Petrogenesis of Mesoproterozoic (Subjotnian) rapakivi complexes of central Sweden: implications from U-Pb zircon ages, Nd, Sr and Pb isotopes. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 92, 201-228.
Andersson, U.B., Claeson, D.T., Högdahl, K., Sjöström, H., 2004. Geological features of the Småland-Värmland Belt along the
Svecofennian margin. Part II: the Nygården, Karlskoga, and Filipstad areas. In: Högdahl, K., Andersson, U.B., Eklund, O.,
(eds). The Transscandinavian Igneous Belt (TIB) in Sweden: A Review of Its Character. Geological Survey of Finland, Special Paper, 37, 39-47.
Andersson, U.B., Eklund, O., Fröjdö, S., Konopelko, D., 2006a. 1.8Ga magmatism in the Fennoscandian Shield; lateral variations in subcontinental mantle enrichment. Lithos, 86, 110-136.
Andersson, U.B., Högdahl, K., Sjöström, H., Bergman, S., 2006b. Multistage growth and reworking of the Palaeoproterozoic
crust in the Bergslagen area, southern Sweden; evidence from U-Pb geochronology. Geological Magazine, 143, 679-697.
Andersson, U.B., Rutanen, H., Johansson, Å., Mansfeld, J., Rimša, A., 2007. Characterization of the Paleoproterozoic mantle beneath the Fennoscandian Shield: Geochemistry and isotope geology (Nd, Sr) of ~1.8Ga mafic plutonic rocks from the Transscandinavian Igneous Belt in Southeast Sweden. International Geology Review, 49, 587-625.
Andersson, U.B., Begg, G.C., Griffin, W.L., Högdahl, K., 2011. Ancient and juvenile components in the continental crust and
mantle: Hf isotopes in zircon from Svecofennian magmatic rocks and rapakivi granites in Sweden. Lithosphere, 3, 409-419.
Appelquist, K., Brander, L., Johansson, Å., Andersson, U.B., Cornell, D., 2011. Character and origin of variably deformed granitoids in central southern Sweden: Implications from geochemistry and Nd isotopes. Geological Journal, 46, 597-618.
Belousova, E.A., Griffin, W.L., O’Reilly, S.Y., 2006. Zircon crystal morphology, trace element signatures and Hf isotope composition as a tool for petrogenetic modelling: examples from Eastern Australian granitoids. Journal of Petrology, 47,
-353.
Bergman, S., Högdahl, K., Nironen, M., Ogenhall, E., Sjöström, H., Lundqvist, L., Lahtinen R., 2008. Timing of Palaeoproterozoic intra-orogenic sedimentation in the central Fennoscandian Shield; evidence from detrital zircon in
metasandstone. Precambrian Research, 161, 231-249.
Bogdanova, S., Gorbatschev, R., Skridlaite, G., Soesoo, A., Taran, L., Kurlovich, D., 2015. Trans-Baltic Palaeoproterozoic correlations towards the reconstruction of supercontinent Columbia/Nuna. Precambrian Research, 259, 5-33.
Bouvier, A., Vervoort, J.D., Patchett, P.J., 2008. The Lu-Hf and Sm-Nd isotopic composition of CHUR: constraints from unequilibrated chondrites and implications for the bulk composition of terrestrial planets. Earth and Planetary Science Letters, 273, 48-57.
Boynton, W.V., 1984. Cosmochemistry of the rare earth elements: meteorite studies. In: Henderson, R., (ed.). Rare Earth Element Geochemistry-Developments in Geochemistry 2. Elsevier Science, 63-114.
Carr, M.J., Feigenson, M.D., Bennett, E.A., 1990. Incompatible element and isotopic evidence for tectonic control of source
mixing and melt extraction along the Central American arc. Contributions to Mineralogy and Petrology, 105, 369-380.
Chappell, B., White, A., 1974. Two contrasting granite types. Pacific Geology, 8, 173-174.
Chu, N.C., Taylor, R.N., Chavagnac, V., Nesbitt, R.W., Boella, R.M., Milton, J.A., German, C.R., Germain, B., Burton, K., 2002. Hf isotope ratio analysis using multi-collector inductively coupled plasma mass spectrometry: an evaluation of isobaric interference corrections. Journal of Analytical Atomic Spectrometry, 17, 1567-1574.
Claeson, D.T., Andersson, U.B., 2000. The 1.85Ga Nygård pluton, central southern Sweden: An example of early Transscandinavian Igneous Belt (TIB) noritic magmatism. Abstract, The 24th Nordic Geological Winter Meeting in Trondheim, Norway, 6-9.1.2000. Geonytt 1, p.50.
Claesson, S., Huhma, H., Kinny, P.D., Williams, I.S., 1993. Svecofennian detrital zircon ages implications for the Precambrian evolution of the Baltic Shield. Precambrian Research, 64, 109-130.
Colley, H., Westra, L., 1987. The volcano-tectonic setting and mineralization of the early Proterozoic KemiöOrijärvi-Lohja belt, SW Finland. Geological Society, London, Special Publication, 33, 95-107.
Condie, K.C., 2013. Preservation and recycling of crust during accretionary and collisional phases of Proterozoic orogens: A bumpy road from Nuna to Rodinia. Geosciences, 3, 240-261.
Dahlin, P., Johansson, Å., Andersson, U.B., 2014. Source character, mixing, fractionation and alkali metasomatism in Palaeoproterozoic greenstone dykes, Dannemora area, NE Bergslagen region, Sweden. Geological Magazine, 151, 573-590.
DePaolo, D.J., 1981. Neodymium isotopes in the Colorado Front Range and crust-mantle evolution in the Proterozoic. Nature, 291, 193-196.
Eerola, T.T., 2002. Mafic-silicic magma interaction in the layered 1.87Ga Soukkio Complex in Mäntsälä, southern Finland. Bulletin of the Geological Society of Finland, 74, 159-183.
Ehlers, C., 1976. Homogenous deformation in Precambrian supracrustal rocks of Kumlinge area, southwest Finland. Precambrian Research, 3, 481-504.
Ehlers, C., Lindroos, A., 1990. Early Proterozoic Svecofennian volcanism and associated plutonism in Enklinge, SW Finland. Precambrian Research, 47, 307-318.
Ehlers, C., Skiöld, T., Vaasjoki, M., 2004. Timing of Svecofennian crustal growth and collisional tectonics in Åland, SW Finland. Bulletin of the Geological Society of Finland, 76, 63-91.
Eklund, O., Korsman, K., Scheinin, B., 2010. Jakob Johannes Sederholm. Lithos, 116, 203-208. Eliasson, T., Greiling, R., Sträng, T., Triumf, C., 2001. Bedrock map 23H Stensele NV, scale 1:50,000. Geological Survey of Sweden, Uppsala, Ai126.
Eskola, P., 1914. On the petrology of the Orijärvi region in southwestern Finland. Bulletin de la Commission Géologique de Finlande, 40, 277pp.
Gerdes, A., Zeh, A., 2006. Combined U-Pb and Hf isotope LA-(MC-) ICPMS analyses of detrital zircons: Comparison with SHRIMP and new constraints for the provenance and age of an Armorican metasediment in Central Germany. Earth and Planetary Science Letters, 249, 47-61.
Gorbatschev, R., Bogdanova, S., 1993. Frontiers in the Baltic shield. Precambrian Research, 64, 3-21.
Griffin, W.L., Pearson, N.J., Belousova, E., Jackson, S.E., Van Achterbergh, E., O’Reilly, S.Y., Shee, S.R., 2000. The Hf isotope composition of cratonic mantle: LAMMC-ICPMS analysis of zircon megacrysts in kimberlites. Geochimica et Cosmochimica Acta, 64, 133-147.
Guitreau, M., Blichert-Toft, J., Billström, K., 2014. Hafnium isotope evidence for early-Proterozoic volcanic arc reworking in the Skellefte district (northern Sweden) and implications for the Svecofennian orogen. Precambrian Research, 252, 39-52.
Hawkesworth, C.J., Hergt, J.M., Ellam, R.M., McDermott, F., 1991. Element fluxes associated with subduction related magmatism. Philosophical Transactions of the Royal Society of London A: Mathematical, Physical and Engineering Sciences, 335, 393-405.
Heinonen, A.P., Andersen, T., Rämö, O.T., 2010. Re-evaluation of rapakivi petrogenesis: Source constraints from the Hf isotope composition of zircon in the rapakivi granites and associated mafic rocks of southern Finland. Journal of Petrology, 51, 1687-1709.
Heim, M., Skiöld, T., Wolff, F.C., 1996. Geology, geochemistry and age of the ‘Tricolor’ granite and some other Proterozoic
(TIB) granitoids at Trysil, southeast Norway. Norsk Geologisk Tidsskrift, 76, 45-54.
Hermansson, T., Stephens, M.B., Corfu, F., Page, L.M., Andersson, J., 2008. Migratory tectonic switching, western Svecofennian orogen, central Sweden: Constraints from U/Pb zircon and titanite geochronology. Precambrian Research, 161, 250-278.
Hooper, P.R., Hawkesworth, C.J., 1993. Isotopic and geochemical constraints on the origin and evolution of the Columbia River Basalt. Journal of Petrology, 34, 1203-1246.
Huhma, H., 1986. Sm-Nd, U-Pb and Pb-Pb isotopic evidence for the origin of the Early Proterozoic Svecokarelian crust in
Finland. Geological Survey of Finland, Bulletin 337, 48pp.
Huhma, H., 1987. Provenance of Early Proterozoic and Archaean metasediments in Finland: a Sm-Nd isotopic study. Precambrian Research, 35, 127-143.
Huhma, H., Claesson, S., Kinny, P.D., Williams, I.S., 1991. The growth of Early Proterozoic crust: new evidence from Svecofennian detrital zircons. Terra Nova, 3, 175-178.
Huhma, H., Mänttäri, I., Peltonen, P., Kontinen, A., Halkoaho, T., Hanski, E., Hokkanen, T., Hölttä, P., Juopperi, H., Konnunaho, J., Layahe, Y., Luukkonen. E., Pietikäinen. K., Pulkkinen, A., Sorjonen-Ward, P., Vaasjoki, M., Whitehouse, M., 2012. The age of the Archaean greenstone belts in Finland. Geological Survey of Finland, Special Paper, 54, 74-175.
Högdahl, K., Sjöström, H., Andersson, U.B., Ahl, M., 2008. Continental margin magmatism and migmatisation in the west-central Fennoscandian Shield. Lithos, 102, 435-459.
Impola, J., 2004. Samanaikainen hapan–emäksinen magmatismi Enklingen tonaliitti-intruusiossa Ahvenanmaalla. Master
Thesis, Department of Geology, University of Turku, 63pp. [In Finnish]
Jackson, S.E., Pearson, N.J., Griffin, W.L., Belousova, E.A., 2004. The application of laser ablation-inductively coupled plasmamass spectrometry to in-situ U-Pb zircon geochronology. Chemical Geology, 211, 47-69.
Jacobsen, S.B., Wasserburg, G.J., 1984. Sm-Nd isotopic evolution of chondrites and achondrites, II. Earth and Planetary Science Letters, 67, 137-150.
Janousek, V., Farrow, C.M., Erban, V., 2006. Interpretation of wholerock geochemical data in igneous geochemistry: introducing Geochemical Data Toolkit (GCDkit). Journal of Petrology, 47, 1255-1259.
Johansson, Å., Hålenius, U., 2013: Palaeoproterozoic mafic intrusions along the Avesta-Östhammar belt, east-central Sweden: mineralogy, geochemistry and magmatic evolution. International Geology Review, 55, 131-157.
Johansson, Å., Stephens, M.B., 2017. Timing of magmatism and migmatization in the 2.0-1.8Ga accretionary Svecokarelian
orogen, south-central Sweden. International Journal of Earth Sciences, 106, 783-810.
Johansson, Å., Bogdanova, S., Čečys, A., 2006. A revised geochronology for the Blekinge Province, southern Sweden. GFF, 128, 287-302.
Johansson, Å., Andersson, U.B., Hålenius, U., 2012. Petrogenesis and geotectonic setting of early Svecofennian arc cumulates in the Roslagen area, east-central Sweden. Geological Journal, 47, 557-593.
Johansson, Å., Andersen, T., Simonsen, S.L., 2015. Hafnium isotope characteristics of late Palaeoproterozoic magmatic rocks from Blekinge, southeast Sweden: possible correlation of small-scale Hf and Nd isotope variations in zircon and whole rocks. GFF, 137, 74-82.
Kallioperä - Bedrock of Finland 1:200 000 [Electronic resource, first published 17.8.2016]. Geological Survey of Finland, Espoo, Finland. Version 1.0 [Referred 20.9.2016]
Kessel, R., Schmidt, M.W., Ulmer, P., Pettke, T., 2005. Trace element signature of subduction-zone fluids, melts and supercritical liquids at 120–180km depth. Nature, 437, 724-727.
Koistinen, T., Stephens, M.B., Bogatchev, V., Nordgulen, Ø., Wennerström, M., Korhonen, J.(compilation), 2001. Geological
map of the Fennoscandian Shield. Scale 1:2,000,000. Geological Survey of Norway, Trondheim, Geological Survey of Sweden, Uppsala, Ministry of Natural Resources of Russia, Moscow, Geological Survey of Finland, Espoo.
Korja, A., Lahtinen, R., Nironen, M., 2006. The Svecofennian orogen: a collage of microcontinents and island arcs. Geological Society of London, Memoirs, 32, 561-578.
Korsman, K., Koistinen, T., Kohonen, J., Wennerström, M., Ekdahl, E., Honkamo, M., Idman, H., Pekkala, Y., (eds.), 1997. Bedrock map of Finland. Scale 1:1,000,000. Geological Survey of Finland, Espoo.
Korsman, K., Korja, T., Pajunen, M., Virransalo, P. GGT/SVEKA Working group, 1999. The GGT/SVEKA transect: structure and evolution of the continental crust in the Paleoproterozoic Svecofennian orogen in Finland. International Geology Review, 41, 287-333.
Kumpulainen, R.A., Mansfeld, J., Sundblad, K., Neymark, L., Bergman, T., 1996. Stratigraphy, age, and Sm-Nd isotope systematics of the country rocks to Zn-Pb sulfide deposits, Ammeberg District, Sweden. Economic Geology, 91, 1009-1021.
Kurhila, M., Vaasjoki, M., Mänttäri, I., Rämö, T., Nironen, M., 2005. U-Pb ages and Nd isotope characteristics of the lateorogenic, migmatizing microcline granites in southwestern Finland. Bulletin of the Geological Society of Finland, 77, 105-128.
Kurhila, M., Andersen, T., Rämö, O.T., 2010. Diverse sources of crustal granitic magma: Lu-Hf isotope data on zircon in three
Paleoproterozoic leucogranites of southern Finland. Lithos, 115, 263-271.
Kusiak, M.A., Whitehouse, M.J., Wilde, S.A., Nemchin, A.A., Clark, C., 2013. Mobilization of radiogenic Pb in zircon revealed by ion imaging: Implications for early Earth geochronology. Geology, 41, 291-294.
Kähkönen, Y., 2005. Svecofennian supracrustal rocks. In: Lehtinen, M., Nurmi, P.A., Rämö, O.T., (eds.). Precambrian Geology of Finland–Key to the Evolution of the Fennoscandian Shield. Elsevier, Amsterdam, Developments in Precambrian Geology, 14, 343-405.
Lahtinen, R., 1994. Crustal evolution of the Svecofennian and Karelian domains during 2.1–1.79Ga, with special emphasis on the geochemistry and origin of 1.93–1.91Ga gneissic tonalites and associated supracrustal rocks in the Rautalampi area, Central Finland. Geological Survey of Finland, Bulletin 378, 128pp.
Lahtinen, R., 1996. Geochemistry of Palaeoproterozoic supracrustal and plutonic rocks in the Tampere–Hämeenlinna area, southern Finland. Geological Survey of Finland, Bulletin 389, 113pp.
Lahtinen, R., Huhma, H., 1997. Isotopic and geochemical constraints on the evolution of the 1.93-1.79Ga Svecofennian crust and mantle in Finland. Precambrian Research, 82, 13-34.
Lahtinen, R., Nironen, M., 2010. Paleoproterozoic lateritic paleosol–ultra-mature/mature quartzite–meta-arkose successions in southern Fennoscandia–intra-orogenic stage during the Svecofennian orogeny. Precambrian Research, 183, 770-790.
Lahtinen, R., Huhma, H., Kousa, J., 2002. Contrasting source components of the Paleoproterozoic Svecofennian metasediments: detrital zircon U-Pb, Sm-Nd and geochemical data. Precambrian Research, 116, 81-109.
Lahtinen, R., Korja, A., Nironen, M., 2005. Paleoproterozoic tectonic evolution. In: Lehtinen, M., Nurmi, P.A., Rämö, O.T., (eds.). Precambrian Geology of Finland-Key to the Evolution of the Fennoscandian Shield. Elsevier, Amsterdam, Developments in Precambrian Geology, 14, 481-532.
Latvalahti, U., 1979. Cu-Zn-Pb ores in the Aijala-Orijärvi area, Southwest Finland. Economic Geology, 74, 1035-1068.
Lauri, L.S., Andersen, T., Hölttä, P., Huhma, H., Graham, S., 2011. Evolution of the Archaean Karelian Province in the Fennoscandian Shield in the light of U-Pb zircon ages and Sm-Nd and Lu-Hf isotope systematics. Journal of the Geological Society, 168, 201-218.
Ludwig, K.R., 2003. User’s manual for Isoplot/Ex, Version 3.00. A geochronological toolkit for Microsoft Excel. Berkeley Geochronology Center, Special Publication No.4, 75pp.
Lundström, I., Allen, R.L., Persson, P.-O., Ripa, M., 1998. Stratigraphies and depositional ages of Svecofennian, Palaeoproterozoic metavolcanic rocks in E. Svealand and Bergslagen, South central Sweden. GFF, 120, 315-320.
Makkonen, H.V., Huhma, H., 2007. Sm-Nd data for mafic-ultramafic intrusions in the Svecofennian (1.88Ga) Kotalahti Nickel Belt, Finland–implications for crustal contamination at the Archaean/Proterozoic boundary. Bulletin of the Geological Society of Finland, 79, 175-201.
Mansfeld, J., Beunk, F.F., Barling, J., 2005. 1.83-1.82Ga formation of a juvenile volcanic arc–implications from U-Pb and SmNd analyses of the Oskarshamn-Jönköping Belt, southeastern Sweden. GFF, 127, 149-157.
Middlemost, E.A.K., 1985. Magmas and Magmatic Rocks. London, Longman, 266pp.
Morel, M.L.A., Nebel O., Nebel-Jacobsen Y.J., Miller J.S., Vroon P.Z., 2008. Hafnium isotope characterization of the GJ-1 zircon
reference material by solution and laser-ablation MC-ICPMS. Chemical Geology, 255, 231-235.
Mouri, H., Väisänen, M., Huhma, H., Korsman, K., 2005. Sm-Nd garnet and U-Pb monazite dating of high-grade metamorphism and crustal melting in the West Uusimaa area, southern Finland. GFF, 127, 123-128.
Müller, W., Shelley, M., Miller, P., Broude, S., 2009. Initial performance metrics of a new custom-designed ArF excimer LA-ICPMS system coupled to a two-volume laser-ablation cell. Journal of Analytical Atomic Spectrometry, 24, 209-214.
Nevalainen, J., Väisänen, M., Lahaye, Y., Heilimo, E., Fröjdö, S., 2014. Svecofennian intra-orogenic gabbroic magmatism: a
case study from Turku, southwestern Finland. Bulletin of the Geological Society of Finland, 86, 93-112.
Nironen, M., 1997. The Svecofennian Orogen: a tectonic model. Precambrian Research, 86, 21-44.
Nironen, M., Mänttäri, I., Väisänen, M., 2016. The Salittu Formation in southwestern Finland, part I: Structure, age and stratigraphy. Bulletin of the Geological Society of Finland, 88, 85-10.
Nyström, J.O., 1999. Origin and tectonic setting of the Dala volcanites. Sveriges Geologiska Undersökning, project 03-889/96, Final report, 41pp.
Pajunen, M., Airo, M.L., Elminen, T., Mänttäri, I., Niemelä, R., Vaarma, M., Wennerström, M., 2008. Tectonic evolution of the
Svecofennian crust in southern Finland. Geological Survey of Finland, Special Paper, 47, 15-160.
Patchett, J., Kouvo, O., 1986. Origin of continental crust of 1.9-1.7Ga age: Nd isotopes and U-Pb zircon ages in the Svecokarelian terrain of South Finland. Contributions to Mineralogy and Petrology, 92, 1-12.
Patchett, P.J., Kouvo, O., Hedge, C.E., Tatsumoto, M., 1981. Evolution of continental crust and mantle heterogeneity: evidence from Hf isotopes. Contributions to Mineralogy and Petrology, 78, 279-297.
Patchett, P.J., Todt, W., Gorbatschev, R., 1987. Origin of continental crust of 1.9-1.7Ga age: Nd isotopes in the Svecofennian
orogenic terrains of Sweden. Precambrian Research, 35, 145-160.
Patiño Douce, A.E., 1999. What do experiments tell us about the relative contributions of crust and mantle to the origin of granitic magmas? Geological Society, London, Special Publications, 168, 55-75.
Pearce, J.A., 1996. A user’s guide to basalt discrimination diagrams. In: Wyman, D.A., (ed.). Trace Element Geochemistry of Volcanic Rocks: Applications for Massive Sulphide Exploration. Geological Association of Canada, Short Course Notes, 12, 79-113.
Pearce, J.A., 2008. Geochemical fingerprinting of oceanic basalts with applications to ophiolite classification and the search for Archean oceanic crust. Lithos, 100, 14-48.
Pearce, J.A., Peate, D.W., 1995. Tectonic implications of the composition of volcanic arc magmas. Annual Review of Earth
and Planetary Sciences, 23, 251-286.
Pearce, J.A., Stern, R.J., Bloomer, S.H., Fryer, P., 2005. Geochemical mapping of the Mariana arc-basin system: Implications for the nature and distribution of subduction components. Geochemistry, Geophysics, Geosystems, 6, 27pp.
Peccerillo, A., Taylor, S.R., 1976. Geochemistry of Eocene calcalkaline volcanic rocks from the Kastamonu area, northern Turkey. Contributions to Mineralogy and Petrology, 58, 63-81.
Peltonen, P., 2005. Svecofennian mafic-ultramafic intrusions. In: Lehtinen, M., Nurmi, P.A., Rämö, O.T., (eds.). Precambrian
Geology of Finland–Key to the Evolution of the Fennoscandian Shield. Elsevier, Amsterdam, Developments in Precambrian
Geology, 14, 407-441.
Pin, C., Zalduegui, J.S., 1997. Sequential separation of light rare-earth elements, thorium and uranium by miniaturized extraction chromatography: application to isotopic analyses of silicate rocks. Analytica Chimica Acta, 339, 79-89.
Ploegsma, M., Westra, L., 1990. The Early Proterozoic Orijärvi triangle (southwest Finland): a key area on the tectonic evolution of the Svecofennides. Precambrian Research, 47, 51-69.
Rancken, R., 1953. Uber eine Archäishce Superkrustale Formation im Schärenhof von Kumlinge, Ålandsgebiet, SW-Finnland. Åbo Akademi Meddelande, Geologi Och Mineralogi Institut, 35, 1-38.
Rogers, J.J., Santosh, M., 2002. Configuration of Columbia, a Mesoproterozoic supercontinent. Gondwana Research, 5, 5-22.
Rosa, D.R.N., Finch, A.A., Andersen, T., Inverno, C.M.C., 2009. U-Pb geochronology and Hf isotope ratios of magmatic zircons from the Iberian pyrite belt. Mineralogy and Petrology, 95, 47-69.
Rutanen, H., Andersson, U.B., 2009. Mafic plutonic rocks in a continental-arc setting: Geochemistry of 1.87–1.78Ga rocks from south-central Sweden and models of their palaeotectonic setting. Geological Journal, 44, 241-279.
Rutanen, H., Andersson, U.B., Väisänen, M., Johansson, Å., Fröjdö, S., Lahaye, Y., Eklund, O., 2011. 1.8Ga magmatism in southern Finland: strongly enriched mantle and juvenile crustal sources in a post-collisional setting. International Geology Review, 53, 1622-1683.
Rämö, O.T., Vaasjoki, M., Mänttäri, I., Elliott, B.A., Nironen, M., 2001. Petrogenesis of the post-kinematic magmatism of the Central Finland Granitoid Complex I; radiogenic isotope constraints and implications for crustal evolution. Journal of Petrology, 42, 1971-1993.
Saalmann, K., Mänttäri, I., Ruffet, G., Whitehouse, M.J., 2009. Age and tectonic framework of structurally controlled Palaeoproterozoic gold mineralization in the Häme belt of southern Finland. Precambrian Research, 174, 53-77.
Samsonov, A.V., Spiridonov, V.A., Larionova, Y.O., Larionov, A.N., 2016. The Central Russian fold belt: Paleoproterozoic boundary of Fennoscandia and Volgo-Sarmatia, the East European Craton. The 32nd Nordic Geological Winter Meeting in Helsinki, 2016. Bulletin of the geological Society of Finland, Special Volume, Abstracts, p. 162.
Sarapää, O., Ahtola, T., Lohva, J., Hagelberg, K., Karimerto, P., 2005. Tutkimustyöselostus Kiskon kunnassa valtausalueella Iso-Kisko (kaivosrekisterinumero 7495/1) tehdyistä ilmeniittitutkimuksista vuosina 2001-2003. Geologian Tutkimuskeskus, AGrkistoraportti, M 06/2014/2005/1/10, 17pp. [In Finnish]
Schandl, E.S., Gorton, M.P., 2002. Application of high field strength elements to discriminate tectonic settings in VMS environments. Economic Geology, 97, 629-642.
Scherer, E.E., Münker, C., Mezger, K., 2001. Calibration of the lutetium hafnium clock. Science, 293, 683-687.
Scherer, E.E., Münker, C., Mezger, K., 2007. The Lu-Hf systematics of meteorites: Consistent or not. Goldschmidt Conference Abstracts 2007. Geochimica et Cosmochimica Acta, 71:A888
Sederholm, J.J., 1934. On migmatites and associated Pre-Cambrian rocks of southwestern Finland, Part III. The Åland Islands. Bulletin de la Commission Géologique de Finlande, 107, 68pp.
Skyttä, P., Mänttäri, I., 2008. Structural setting of late Svecofennian granites and pegmatites in Uusimaa Belt, SW Finland: Age constraints and implications for crustal evolution. Precambrian Research, 164, 86-109.
Skyttä, P., Käpyaho, A., Mänttäri, I., 2005. Supracrustal rocks in the Kuovila area, southern Finland: structural evolution, geochemical characteristics and the age of volcanism. Bulletin of the Geological Society of Finland, 77, 129-150.
Skyttä, P., Väisänen, M., Mänttäri, I., 2006. Preservation of Palaeoproterozoic early Svecofennian structures in the Orijärvi
area, SW Finland–Evidence for polyphase strain partitioning. Precambrian Research, 150, 153-172.
Stacey, J.S., Kramers, J.D., 1975. Approximation of terrestrial lead isotope evolution by a two-stage model. Earth and Planetary Science Letters, 26, 207-221.
Stephens, M.B., Andersson, J., 2015. Migmatization related to mafic underplating and intra-or back-arc spreading above a subduction boundary in a 2.0–1.8Ga accretionary orogen, Sweden. Precambrian Research, 264, 235-257.
Stephens, M.B., Ripa, M., Lundström, I., Persson, L., Bergman, T., Ahl, M., Wahlgren, C.H., Persson, P.O., Wickström, L., 2009. Synthesis of the bedrock geology in the Bergslagen region, Fennoscandian Shield, south-central Sweden. Sveriges Geologiska Undersökning (SGU), 58, 260pp.
Suominen, V., 1987. Lounais-Suomen mafiset juonikivet. In: Aro, K., Laitakari I., (eds.). Suomen Diabaasit ja muut mafiset
juonikivilajit. Geological Survey of Finland, Report of Investigation, 76, 151-172.
Suominen, V., 1988. Radiometric ages on zircons from a cogenetic gabbro and plagioclase porphyrite suite in Hyvinkää, southern Finland. Bulletin of the Geological Society of Finland, 60, 135-140.
Sun, S.S., McDonough, W.F., 1989. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. In: Saunders, A.D., Norry, M.J., (eds.). Magmatism in the Ocean Basins. Geological Society, London, Special Publications, 42, 313-345.
Söderlund, U., Patchett, P.J., Vervoort, J., Isachsen, C.E., 2004. The 176Lu decay constant determined by Lu-Hf and U-Pb
isotope systematics of Precambrian mafic intrusions. Earth and Planetary Science Letters, 219, 311-324.
Söderlund, U., Isachsen, C.E., Bylund, G., Heaman, L.M., Patchett, P.J., Vervoort, J.D., Andersson, U.B., 2005. U-Pb baddeleyite ages and Hf, Nd isotope chemistry constraining repeated mafic magmatism in the Fennoscandian Shield from 1.6 to 0.9Ga. Contributions to Mineralogy and Petrology, 150, 174-194.
Söderlund, U., Elming, S.Å., Ernst, R.E., Schissel, D., 2006. The central Scandinavian dolerite Group-Protracted hotspot activity or back-arc magmatism? Constraints from U-Pb baddeleyite geochronology and Hf isotopic data. Precambrian Research, 150, 136-152.
Talikka, M., Mänttäri, I., 2005. Pukala intrusion, its age and connection to hydrothermal alteration in Orivesi, southwestern
Finland. Bulletin of the Geological Society of Finland, 77, 165-180.
Tatsumi, Y., Takahashi, T., 2006. Operation of subduction factory and production of andesite. Journal of Mineralogical and
Petrological Sciences, 101, 145-153.
Taylor, S.R., McLennan, S.M., 1995. The geochemical evolution of the continental crust. Reviews of Geophysics, 33, 241-265.
Torvela, T., Ehlers, C., 2010. From ductile to brittle deformation: structural development and strain distribution along a crustalscale shear zone in SW Finland. International Journal of Earth Sciences, 99, 1133-1152.
Torvela, T., Mänttäri, I., Hermansson, T., 2008. Timing of deformation phases within the South Finland shear zone, SW Finland. Precambrian Research, 160, 277-298.
Vaasjoki, M., Huhma, H., 1999. Lead and neodymium isotopic results from metabasalts of the Haveri Formation, southern
Finland: Evidence for Palaeoproterozoic enriched mantle. Bulletin of the Geological Society of Finland, 71, 143-153.
Vaasjoki, M., Huhma, H., Lahtinen, R., Vestin, J., 2003. Sources of Svecofennian granitoids in the light of ion probe U-Pb
measurements on their zircons. Precambrian Research, 121, 251-262.
Valbracht, P.J., Oen, I.S., Beunk, F.F., 1994. Sm-Nd isotope systematics of 1.9-1.8Ga granites from western Bergslagen, Sweden: inferences on a 2.1-2.0Ga crustal precursor. Chemical Geology, 112, 21-37.
Van Achterbergh, E., Ryan C., Jackson, S., Griffin W., 2001. Data reduction software for LA-ICP-MS, In: Sylverster, P., (ed.). Laser-Ablation ICPMS in the Earth Sciences–Principles and applications. Mineralogical Association of Canada short course series, 29, St John, Newfoundland, 239-243.
Vervoort, J.D., Patchett, P.J., 1996. Behavior of hafnium and neodymium isotopes in the crust: constraints from Precambrian
crustally derived granites. Geochimica et Cosmochimica Acta, 60, 3717-3733.
Vervoort, J.D., Patchett, P.J., Soderlund, U., Baker, M., 2004. Isotopic composition of Yb and the determination of Lu concentrations and Lu/Hf ratios by isotope dilution using MCICPMS. Geochemistry Geophysics Geosystems, 5, 15pp.
Vuollo, J., Huhma, H., 2005. Paleoproterozoic mafic dikes in NE Finland. In: Lehtinen, M., Nurmi, P.A., Rämö, O.T. (eds.). Precambrian Geology of Finland–Key to the Evolution of the Fennoscandian Shield. Developments in Precambrian Geology,
, 195-236.
Väisänen, M., Mänttäri, I., 2002. 1.90-1.88Ga arc and back-arc basin in the Orijärvi area, SW Finland. Bulletin of the Geological Society of Finland, 74, 185-214.
Väisänen, M., Kirkland, C.L., 2008. U-Th-Pb geochronology of igneous rocks in the Toija and Salittu Formations, Orijärvi area, southwestern Finland: Constraints on the age of volcanism and metamorphism. Bulletin of the Geological Society of Finland, 80, 73-87.
Väisänen, M., Mänttäri, I., Hölttä, P., 2002. Svecofennian magmatic and metamorphic evolution in southwestern Finland as revealed by U-Pb zircon SIMS geochronology. Precambrian Research, 116, 111-127.
Väisänen, M., Eklund, O., Lahaye, Y., O’Brien, H., Fröjdö, S., Högdahl, K., Lammi, M., 2012a. Intra-orogenic Svecofennian magmatism in SW Finland constrained by LA-MC-ICP-MS zircon dating and geochemistry. GFF, 134, 99-114.
Väisänen, M., Johansson, Å., Andersson, U.B., Eklund, O., Hölttä, P., 2012b. Palaeoproterozoic adakite- and TTG-like magmatism in the Svecofennian orogen, SW Finland. Geologica Acta, 10, 351-371.
Wasström, A., 1993. The Knaften granitoids of Västerbotten county, northern Sweden. In: Lundqvist, T., (ed.). Radiometric dating results. Sveriges geologiska undersökning. Serie C, 823, 60-64.
Wasström, A., 2005. Petrology of a 1.95Ga granite-granodioritetonalite-trondhjemite complex and associated extrusive rocks in the Knaften area, northern Sweden. GFF, 127, 67-82.
Wedepohl, K.H., 1995. The composition of the continental crust. Geochimica et Cosmochimica Acta, 59, 1217-1232.
Weihed, P., Arndt, N., Billström, K., Duchesne, J.-C., Eilu, P., Martinsson, O., Papunen, H., Lahtinen, R., 2005. Precambrian geodynamics and ore formation: the Fennoscandian Shield. Ore Geology Reviews, 27, 273-322.
Wehrmann, H., Hoernle, K., Garbe-Schönberg, D., Jacques, G., Mahlke, J., Schumann, K., 2014. Insights from trace element
geochemistry as to the roles of subduction zone geometry and subduction input on the chemistry of arc magmas. International Journal of Earth Sciences, 103, 1929-1944.
Whitehouse, M.J., Kamber, B.S., Moorbath, S., 1999. Age significance of U-Th-Pb zircon data from early Archaean rocks of west Greenland–a reassessment based on combined ion-microprobe and imaging studies. Chemical Geology, 160, 201-224.
Wikström, A., Andersson, U.B., 2004. Geological features of the Småland-Värmland Belt along the Svecofennian margin, part I: from the Loftahammar to the Tiveden-Askersund areas. In: Högdahl, K., Andersson, U.B., Eklund, O., (eds.). The Transscandinavian Igneous Belt (TIB) in Sweden: A Review of Its Character. Geological Survey of Finland, Special Paper,
, 22-39.
Wilson, M., Hamilton, P.J., Fallick, A.E., Aftalion, M., Michard, A., 1985. Granites and early Proterozoic crustal evolution in Sweden: evidence from Sm-Nd, U-Pb and O isotope systematics. Earth and Planetary Science Letters, 72, 376-388.
Winchester, J.A., Floyd, P.A., 1977. Geochemical discrimination of different magma series and their differentiation products
using immobile elements. Chemical Geology, 20, 325-343.
Yang, J.H., Sun, J.F., Chen, F., Wilde, S.A., Wu, F.Y., 2007. Sources and petrogenesis of Late Triassic dolerite dikes in the Liaodong Peninsula: Implications for post-collisional lithosphere thinning of the eastern North China Craton. Journal of Petrology, 48, 1973-1997.
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