A4 Refereed article in a conference publication
Petrogenesis of charnockites in the Turku granulite area
Authors: Helenius Eeva-Maria, Eklund Olav, Väisänen Markku, Hölttä Pentti
Editors: Carl Ehlers, Olav Eklund, Annakaisa Korja, Annika Kruuna, Raimo Lahtinen, Lauri J. Pesonen
Conference name: Third Symposium on the Structure and Evolution of the Lithosphere in Finland
Publishing place: Institute of Seismology, University of Helsinki
Publication year: 2004
Book title : Lithosphere 2004
Series title: Report-S
Number in series: 45
Volume: 45
First page : 17
Last page: 20
Number of pages: 4
ISBN: 951-45-7999-2
ISSN: 0357-3060
Web address : http://www.seismo.helsinki.fi/pdf/LITO2004.pdf
Charnockites are either plutonic or metamorphic orthopyroxene-bearing quartzofeldspathic rocks. This study shows that the charnockitic rocks within the Turku granulite area were formed under granulite facies conditions from tonalitic granitoids through charnockitization reactions. Biotite and amphibole reacted with quartz to form pyroxene, plagioclase ± potassium feldspar.
