A shoshonitic dyke in Lohja, Southern Finland



: Marek Lehtinen, Markku Väisänen, Jaakko Kara, Hugh O’Brien, Marja Lehtonen

: Annakaisa Korja, Ilmo Kukkonen, Suvi Heinonen, Kati Oinonen, Katriina Arhe, Olav Eklund, Fredrik Karell, Elena Kozlovskaya, Arto Luttinen, Raimo Lahtinen, Juha Lunkka, Vesa Nykänen, Markku Poutanen, Eija Tanskanen, Timo Tiira

: Lithosphere

: Helsinki

: 2016

: Report - Institute of seismology. University of helsinki

: Lithosphere 2016: Ninth symposium on the Structure, Composition and Evolution of the Lithosphere in Fennoscandia

: Report - institute of seismology. university of helsinki. s

: 65

: 71

: 74

: 4

: 978-952-10-9588-7

: 978-952-10-9589-4

: 0357-3060

: http://www.seismo.helsinki.fi/pdf/Lito2016.pdf(external)


We describe here a newly discovered cross-cutting mafic dyke in the vicinity of Lohja, southern Finland. The dyke is E-W trending and about 6 m in width. Only a few zircons were recovered from the dyke despite the high Zr contents and they all were inherited. Therefore, the crystallisation age remains uncertain. The dyke is shoshonitic in composition and the closest analogues are the åva lamprophyre dykes in SW Finland.


Last updated on 2024-26-11 at 14:57