GEOTECHNICAL REPORT 10 FinlandsTHE FINNISH Stenindustri-NATURAL STONE förbundASSOCIATION rf Natural stone production in the Wiborg rapakivi granite batholith in southeastern Finland Paavo Härmä and 0lavi Selonen 2018 THE FINNISH NATURAL STONE ASSOCIATION Geotechnical report 10 Natural stone production in the Wiborg rapakivi granite batholith in southeastern Finland YHTEENVETO: Kaakkois-Suomen rapakivigraniittialueen rakennuskivet Paavo Härmä Geological Survey of Finland FI-02151 Espoo, Finland E-mail:
[email protected] Olavi Selonen Åbo Akademi University Department of natural sciences Geology and Mineralogy FI-20500 Turku, Finland E-mail:
[email protected] ISSN 2489-3161 Layout: Sonck-Koota Publisher: The Finnish Natural Stone Association P.O.Box 381, FIN-00131 HELSINKI www.suomalainenkivi.fi Front cover. Quarry in Ylämaa (Baltic Brown) in southeastern Finland towards the end of the 2010’s. Photo: Jani Kankare. Small photo: www.suomalainenkivi.fi Kansikuva. Louhimo Ylämaalla (Ylämaan ruskea) 2010-luvun loppupuolella. Kuva: Jani Kankare. Pieni kuva: www.suomalainen kivi.fi HELSINKI 2018 GEOTECHNICAL REPORT 10 CONTENTS 1 Introduction ....................................................................................................................... 2 2 Geological outline ............................................................................................................. 2 3 Rock types of the Wiborg batholith ................................................................................. 4 3.1 Wiborgite .........................................................................................................................4