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U-Pb zircon determinations from the Keikyä Breccia and other sites in the Svecofennides: indications of a Svecokarelian protocrust

Heterogeneous zircon populations from four different localities within the Svecofennian area in Finland demonstrate that the ca. 1890 Ma old syntectonic granitoids contain older material, probably belonging to the ca. 1950 Ma Svecofennian protocrust, the influence of which is also evident in metatur...

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Gardado en:
Principais autores: M. Vaasjoki, K. Pietikäinen, M. Vaarma
Formato: Artigo
Idioma:Inglês
Publicado: Geological Society of Finland 1996-06-01
Series:Bulletin of the Geological Society of Finland
Assuntos:
breccia
quartz diosites
gabbros
tonolite
absolute age
U/Pb
zircon
Proterozoic
keikyä
Kalliokari
Evijärvi
Finland
Acceso en liña:http://www.geologinenseura.fi/bulletin/Volume68/sgs_bt_068_1_pages_003_010.pdf
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