Download iavcei - SPACE RESEARCH at FMI

INTERNATIONAL ASSOCIATION OF VOLCANOLOGY AND CHEMISTRY OF THE
EARTH’S INTERIOR (IAVCEI)
(Reporter: Tapani Rämö)
IAVCEI – GEOLOGICAL SURVEY OF FINLAND
The Geological Survey of Finland has continued studies on Archean adakites (subduction-related
magmas from ancient hydrated oceanic crust) and greenstone belts in the eastern Fennoscandian
shield, and on Precambrian ophiolites in central Finland (Kainuu, North Karelia).
Paleoproterozoic volcanism has been studied in central and southern Finland. Diamond-bearing
kimberlites and associated lamproites of eastern Finland (Kuopio-Kuhmo-Kuusamo region) have
been studied with the age, composition, and structure of the mantle lithosphere as one main
focus. The Geological Survey of Finland was also responsible, together with the universities of
Oulu and Helsinki, for an international (Balkema) volume on “Dyke Swarms” with a strong
focus on issues relevant to IAVCEI.
IAVCEI – UNIVERSITY OF HELSINKI
The Department of Geology, University of Helsinki has carried out studies on the Jurassic
basalts and associated tholeiitic intrusions and mafic dikes, both in the Antarctic and in southern
Africa. These have focused on CFB-type lavas, ferropicrite and lamproite dikes and gabbroic
intrusions, as well as their Precambrian country rocks. Studies on bimodal, rift-related graniteanorthosite-basalt-rhyolite (rapakivi) magmatism in Fennoscandia, southwestern United States,
and Brazil have been continued in collaboration with local universities and research institutes
and the Geological Survey of Finland. Studies on the physical volcanology, geochemistry and
petrology of Paleoproterozoic Svecofennian volcanic rocks in the Tampere-Pirkanmaa area have
been continued. Petrology and geochemistry of the late orogenic granites of southern Finland and
the Proterozoic flood basalt association in Russian Karelia have been studied in Finnish-French
collaboration. Investigations on Proterozoic mantle carbon have been continued with field and
laboratory studies of carbonatite dikes in southern Finland.
IAVCEI – UNIVERSITY OF OULU
The Department of Geology, University of Oulu has studied Os isotopes and melt inclusions in
komatiites in northern Finland in collaboration with American and Australian universities. Os
isotopes of volcanic rocks in the Canary Islands and Emeishan Flood Basalt Province, China, are
currently studied in collaboration with American collaborators. E. Hanski participated in the
IAVCEI International Conference on Continental Volcanism in Guangzhou and the related field
excursion to the Emeishan Province. Studies have also been continued on the petrogenesis and
ore potential (PGE-base metal sulfide-chromite) of the rift-related Paleoproterozoic layered
mafic intrusions in northern Finland; this has involved Finnish-South African collaboration.
IAVCEI – UNIVERSITIES OF TURKU AND ÅBO AKADEMI
The Department of Geology, University of Turku, has studied the geochemistry, petrology, and
tectonic evolution of the Paleoproterozoic Svecofennian volcanic rocks of southeastern Finland,
syn-orogenic granitoids in southern Finland, and carbonatite dikes in coastal southwest Finland.
Petrological studies on the postorogenic 1.80 Ga lamprophyre-granite association have been
continued as Finnish-Russian collaboration. The Department of Geology, Åbo Akademi
University has studied the Svecofennian volcanic rocks of the Pellinki, Enklinge, Kemiö and
Haveri regions in southern Finland and the rapakivi granite-anorthosite association of Åland.
IAVCEI – PUBLICATIONS
Refereed articles: 15
Other publications: 10