INSTITUTE OF SEISMOLOGY UNIVERSITY OF HELSINKI REPORT S-56 LITHOSPHERE 2012 SEVENTH SYMPOSIUM ON THE STRUCTURE, COMPOSITION AND EVOLUTION OF THE LITHOSPHERE IN FINLAND PROGRAMME AND EXTENDED ABSTRACTS edited by Ilmo Kukkonen, Emilia Kosonen, Kati Oinonen, Olav Eklund, Annakaisa Korja, Toivo Korja, Raimo Lahtinen, Juha Pekka Lunkka and Markku Poutanen Geological Survey of Finland Espoo, November 6-8, 2012 Helsinki 2012 ii Editor-in-Chief: Pekka Heikkinen Guest Editors: Ilmo Kukkonen, Emilia Kosonen, Kati Oinonen, Olav Eklund, Annakaisa Korja, Toivo Korja, Raimo Lahtinen, Juha Pekka Lunkka and Markku Poutanen Publisher: Institute of Seismology P.O. Box 68 FI-00014 University of Helsinki Finland Phone: +358-9-1911 (swichboard) Fax: +358-9-191 51698 http://www.helsinki.fi/geo/seismo/ ISSN 0357-3060 ISBN 978-952-10-5066-4 (Paperback) Helsinki University Print Helsinki 2012 ISBN 978-952-10-5067-1 (PDF) iii LITHOSPHERE 2012 SEVENTH SYMPOSIUM ON THE STRUCTURE, COMPOSITION AND EVOLUTION OF THE LITHOSPHERE IN FINLAND PROGRAMME AND EXTENDED ABSTRACTS Geological Survey of Finland, Espoo, November 6-8, 2012 CONTRIBUTING ORGANIZATIONS Finnish National Committee of the International Lithosphere Programme (ILP) Finnish Geodetic Institute Geological Survey of Finland University of Helsinki University of Oulu Åbo Akademi University ORGANIZING COMMITTEE AND EDITORS Ilmo Kukkonen Geological Survey of Finland P.O. B. 96, FI-02151 Espoo, Finland E-mail: ilmo.kukkonen [at] gtk.fi Olav Eklund Geology and mineralogy, Åbo Akademi University Domkyrkotorget 1, FI-20500 Åbo/Turku, Finland E-mail: olav.eklund [at] abo.fi Annakaisa Korja Institute of Seismology, Dept. of Geosciences and Geography P.O.B. 68, FI-00014 University of Helsinki, Finland E-mail: annakaisa.korja [at] helsinki.fi Toivo Korja Department of Physics, University of Oulu P.O.B 3000, FI-90014 University of Oulu, Finland E-mail: toivo.korja [at] oulu.fi Emilia Kosonen Institute of Seismology, Dept. of Geosciences and Geography P.O.B. 68, FI-00014 University of Helsinki, Finland E-mail: emilia.kosonen [at] helsinki.fi Raimo Lahtinen Geological Survey of Finland P.O. B. 96, FI-02151 Espoo, Finland E-mail: raimo.lahtinen [at] gtk.fi Juha Pekka Lunkka Department of Geosciences P.O. Box 3000, FI-90014, University of Oulu E-mail: juha.pekka.lunkka [at] oulu.fi Kati Oinonen Institute of Seismology, Dept. of Geosciences and Geography P.O.B. 68, FI-00014 University of Helsinki, Finland E-mail: kati.oinonen [at] helsinki.fi Markku Poutanen Finnish Geodetic Institute Geodeetinrinne 2, FI-02430 Masala, Finland E-mail: markku.poutanen [at] fgi.fi iv References of Lithosphere Symposia Publications Pesonen, L.J., Korja, A. and Hjelt, S.-E., 2000 (Eds.). Lithosphere 2000 - A Symposium on the Structure, Composition and Evolution of the Lithosphere in Finland. Programme and Extended Abstracts, Espoo, Finland, October 4-5, 2000. Institute of Seismology, University of Helsinki, Report S-41, 192 pages. Lahtinen, R., Korja, A., Arhe, K., Eklund, O., Hjelt, S.-E. and Pesonen, L.J., 2002 (Eds.). Lithosphere 2002 – Second Symposium on the Structure, Composition and Evolution of the Lithosphere in Finland. Programme and Extended Abstracts, Espoo, Finland, November 12-13, 2002. Institute of Seismology, University of Helsinki, Report S-42, 146 pages. Ehlers, C., Korja A., Kruuna, A., Lahtinen, R. and Pesonen, L.J., 2004 (Eds.). Lithosphere 2004 – Third Symposium on the Structure, Composition and Evolution of the Lithosphere in Finland. Programme and Extended Abstracts, November 10-11, 2004, Turku, Finland. Institute of Seismology, University of Helsinki, Report S-45, 131 pages. Kukkonen, I.T., Eklund, O., Korja, A., Korja, T., Pesonen, L.J. and Poutanen, M., 2006 (Eds.). Lithosphere 2006 – Fourth Symposium on the Structure, Composition and Evolution of the Lithosphere in Finland. Programme and Extended Abstracts, Espoo, Finland, November 9-10, 2006. Institute of Seismology, University of Helsinki, Report S-46, 233 pages. Korja, T., Arhe, K., Kaikkonen, P., Korja, A., Lahtinen, R. and Lunkka, J.P., 2008 (Eds.). Lithosphere 2008 – Fifth Symposium on the Structure, Composition and Evolution of the Lithosphere in Finland. Programme and Extended Abstracts, Oulu, Finland, November 5-6, 2008. Institute of Seismology, University of Helsinki, Report S-53, 132 pages. Heikkinen, P., Arhe, K., Korja, T., Lahtinen,R., Pesonen, L.J. and Rämö, T., 2010 (Eds.). Lithosphere 2010 – Sixth Symposium on the Structure, Composition and Evolution of the Lithosphere in Finland. Programme and Extended Abstracts, Helsinki, Finland, October 27-28, 2010. Institute of Seismology, University of Helsinki, Report S-55, 154 pages. Kukkonen, I.T., Kosonen E.M., Oinonen, K., Eklund, O., Korja, A., Korja, T., Lahtinen, R., Lunkka, J.P. and Poutanen, M., 2012 (Eds.). Lithosphere 2012 – Seventh Symposium on the Structure, Composition and Evolution of the Lithosphere in Finland. Programme and Extended Abstracts, Espoo, Finland, November 6-8, 2012. Institute of Seismology, University of Helsinki, S-56, 116 pages. Keywords (GeoRef Thesaurus, AGI): lithosphere, crust, upper mantle, Fennoscandia, Finland, Precambrian, Baltic Shield, symposia v TABLE OF CONTENTS PREFACE ix PROGRAMME xi EXTENDED ABSTRACTS xv R. Alviola. Distribution of rare element pegmatites in Finland 1 F. Chopin, A. Korja and P. Hölttä. Tectonometamorphic evolution of the Bothian 5 belt within the Svecofennian orogen - a case study for the building of a large dome in the Paleoproterozoic P. Eilu and K. Rasilainen. Fennoscandian Neoarchaean–Palaeoproterozoic Ni 9 and PGE metallogeny and supercontinent cycles O. Eklund and S. Fröjdö. Petrology of an enriched gabbro in the Bothnian core 13 complex J. Engström, A. Kärki and S. Paulamäki. The polyphase ductile deformation 17 at Olkiluoto, SW Finland S. Gradmann, J. Ebbing and J. Fullea. Juxtaposed Lithospheres of Norway and 21 Sweden – insights from 3D integrated geophysical modelling S. Heinonen, E. Koivisto, M. Heinonen and P. Heikkinen. Seismic 3D modelling: 25 case studies from Pyhäsalmi and Kevitsa, Finland N. Juhojuntti, S. Bergman and S. Olsson. Crustal structure in the Kiruna district, 29 northern Sweden: Preliminary results from a seismic reflection study J.V. Korhonen. Indications of neotectonic movements at Swan Water (Joutenvesi) 33 of the Saimaa Lake system A. Korja, P. Heikkinen, Y. Roslov and S. Mertanen. North European Transect 35 (NET) – Growth of Northern Europe in Supercontinent Cycles A. Korja, O.T. Rämö, O. Eklund, T. Korja, A. Kärki and P. Hölttä. Evolution 39 of the middle crust in Central Fennoscandia - MIDCRUST E. Kozlovskaya, L. Vinnik, G. Kosarev, S. Oreshin and POLENET/LAPNET 43 Working Group. Structure of the upper mantle in the northern Fennoscandian Shield obtained by joint inversion of POLENET/LAPNET P- and S- receiver functions I. Kukkonen, S. Heinonen, P. Heikkinen and P. Sorjonen-Ward. Delineating 45 ophiolite-derievd host rocks of massive sulfide Cu-Co-Zn deposits with 2D high-resolution seismic reflection data in Outokumpu, Finland vi M. Kurhila, E. Suikkanen and A. Kotilainen. Geochronology and isotopic 47 characterization of the Vaasa complex in western Finland Y. Kähkönen and H. Huhma. Revised U-Pb zircon ages of supracrustal rocks 51 of the Paleoproterozoic Tampere Schist Belt, southern Finland A. Kärki, T. Korja, M. Mahmoud, M. Pirttijärvi, J. Tirronniemi, P. Tuisku and 55 J. Woodard. Structure of the Raahe –Ladoga Shear Complex E. Lanne. Coda waves of local earthquakes: A case history from northern Finland 59 E. Lehtonen, T. Halkoaho, P. Hölttä, H. Huhma, E. Luukkonen, E. Heilimo 63 and A. Käpyaho. Constraining the age and evolution of Archean greenstone belts in the Kuhmo and Suomussalmi areas, Finland K. Moisio and P. Kaikkonen. Effective elastic thickness of the lithosphere in the 67 seismic POLAR profile, Northern Finland K. Nikkilä and A. Korja. Shearing in the northern part of the Central Finland 71 granitoid complex K. Nikkilä, H. Koyi, A. Korja and O. Eklund. Lateral flow in the middle crust– 75 Experiments from the Svecofennian orogen T. F. Redfield, P.T. Osmundsen and B.W.H. Hendriks. From the Gneiss Age 79 to the Ice Age: Lithosphere, landscape, and the shaping of Fennoscandia O.T. Rämö, A. Kotilainen, M.A. Barnes, R. Michallik and C.G. Barnes. Magmatic 83 evolution of the Vaasa granite complex, western Finland: Preliminary constraints from in situ geochemistry of alkali feldspar megacrysts J. Salminen, S. Mertanen, D. Evans, and Z. Wang. Paleomagnetic and geochemical 87 studies of the Subjotnian Satakunta diabase dykes – implications to Mesoproterozoic supercontinent Nuna H. Silvennoinen, E. Kozlovskaya, E. Kissling and POLENET/LAPNET Working 91 Group. Structure of the upper mantle beneath the northern Fennoscandian Shield revealed by high-resolution teleseismic P-wave traveltime tomography D.B. Snyder, M. Hillier and B.A. Kjarsgaard. 3-D structural model of the Slave 93 craton mantle lithosphere, Northwest Territories, Canada A. Soesoo and S. Hade. Geochemistry and age of some A-type granitoid rocks of 97 Estonia M.B. Stephens and J. Andersson. Contrasting orogenic systems in the 101 Fennoscandian Shield, southern Sweden vii K. Vaittinen, T. Korja, M. Mahmoud, M. Pirttijärvi, M. Smirnov, I. Lahti and P. 105 Kaikkonen. Vintage and retro conductivity models of the Bothnian Bay region: implications for the crustal structure and processes of the Svecofennian orogen I.Virshylo, G.Prodaivoda and E.Kozlovskaya. Method of joint inversion of velocity 109 model and gravity data based on mineralogical