Geochemistry of Cenozoic volcanic rocks of the Faroe Islands with a focus on their ultra-trace contents of Hg

0459245 - ÚIACH 2017 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Šišková, P. - Krmíček, Lukáš - Coufalík, Pavel
Geochemistry of Cenozoic volcanic rocks of the Faroe Islands with a focus on their ultra-trace contents of Hg.
Proceedings: Students in Polar and Alpine Research Conference 2016. Brno: Department of Geography, Faculty of Science, Masaryk University, 2016 - (Hrbáček, F.; Ondruch, J.; Ambrožová, K.; Ondráčková, L.; Nývlt, D.), s. 41-42. ISBN 9788021082038.
[Students in Polar and Alpine Research Conference 2016. Brno (CZ), 25.04.2016-27.04.2016]
Institucionální podpora: RVO:68081715 ; RVO:67985831
Klíčová slova: Faroe Islands * tholeiitic basalt * mercury content * continental crust
Kód oboru RIV: CB - Analytická chemie, separace; DB - Geologie a mineralogie (GLU-S)

According to geophysical research performed in the eastern part of the North Atlantic, many authors inferred that the basalt flows on the Faroe Islands overlie a continental metamorphic basement supposedly of Precambrian age. With respect to this, we focused our study on determination of ultratrace mercury contents by means of atomic absorption spectrometry to test this hypothesis. Mercury contents in basalts seem to be a sensitive tool for distinguishing between the basalts not affected by interaction with the continental crust and the basalts enclosing crustal xenoliths. Contents of Hg show great variability between samples even within the same formation. We presume that high concentrations of Hg in some samples are related to stagnation of individual pulses of parent magma in the continental crust below the Faroe Islands.
Trvalý link: http://hdl.handle.net/11104/0259478