Geology and ore petrology of the Akanvaara and Koitelainen mafic layered intrusions and the Keivitsa-Satovaara layered complex, northern Finland

Geological Survey of Finland, Bulletin 395, 1997. - 240 p. , 88 fig. , 11 tab. and 5 appended maps. The Akanvaara and Koitelainen intrusions, ca 2440 Ma old, represent a group of cratonic mafic layered intrusions (aged from 2500 to 2440 Ma) of the Fennoscandian (Baltic) Shield. These intrusions, which show all the standard types of igneous layering, host deposits of chromite, vanadium, titanium, platinum-group elements (PGE) and gold. Первоисточник: http://en.gtk.fi Тематический выпуск Геологической Службы Финляндии, посвящённый геологии и полезным ископаемым раннепротерозойских расслоенных интрузий северной Финляндии. По материалам диссертации автора. Contents: Introduction Geological setting Mafic Layered Intrusions of the Fennoscandian Shield Preview of the convection-contamination model The Akanvaara intrusion The Koitelainen intrusion Petrology of the Koitelainen intrusion The Keivitsa – Satovaara complex The Keivitsa intrusion The Keivitsansarvi Cu-Ni-Pge-Au deposit