Detail publikačního výsledku

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

ŠIŠKOVÁ, P.; KRMÍČEK, L.; COUFALÍK, P.

Originální název

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

Anglický název

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

Druh

Abstrakt

Originální abstrakt

We focused our study on determination of ultra-trace mercury contents (by means of atomic absorption spectrometry) in volcanic rocks from the North Atlantic Igneous Province to test the hypothesis about the presence of continental metamorphic basement beneath the Faroe Islands. The results of combined optical microscopy, electron microprobe and whole-rock chemical study revealed that the studied volcanites are fine grained and aphyric to feldspar-phyric tholeiitic basalts with primary phenocrysts or microphenocrysts of plagioclase and pyroxene ± olivine in a matrix composed of tiny plagioclase laths ± tachylyte in various stages of alteration. Contents of Hg show great variability between samples even within the same formation. We presume that elevated concentrations of Hg in some samples are related to stagnation of individual pulses of parent magma in the continental crust below the Faroe Islands.

Anglický abstrakt

We focused our study on determination of ultra-trace mercury contents (by means of atomic absorption spectrometry) in volcanic rocks from the North Atlantic Igneous Province to test the hypothesis about the presence of continental metamorphic basement beneath the Faroe Islands. The results of combined optical microscopy, electron microprobe and whole-rock chemical study revealed that the studied volcanites are fine grained and aphyric to feldspar-phyric tholeiitic basalts with primary phenocrysts or microphenocrysts of plagioclase and pyroxene ± olivine in a matrix composed of tiny plagioclase laths ± tachylyte in various stages of alteration. Contents of Hg show great variability between samples even within the same formation. We presume that elevated concentrations of Hg in some samples are related to stagnation of individual pulses of parent magma in the continental crust below the Faroe Islands.

Klíčová slova

Faroe Islands; tholeiitic basalt; mercury content; continental crust

Klíčová slova v angličtině

Faroe Islands; tholeiitic basalt; mercury content; continental crust

Autoři

ŠIŠKOVÁ, P.; KRMÍČEK, L.; COUFALÍK, P.

Rok RIV

2017

Vydáno

25.04.2016

Nakladatel

Masaryk University

Místo

Brno

ISBN

978-80-210-8203-8

Kniha

Proceedings: Students in Polar and Alpine Research Conference 2016

Edice

1

Strany od

41

Strany do

42

Strany počet

2

URL

https://www.researchgate.net/publication/301822528_Geochemistry_of_Cenozoic_volcanic_rocks_of_the_Faroe_Islands_with_a_focus_on_their_ultratrace_contents_of_Hg

Plný text v Digitální knihovně

http://hdl.handle.net/

BibTex

@misc{BUT128671,
  author="ŠIŠKOVÁ, P. and KRMÍČEK, L. and COUFALÍK, P.",
  title="Geochemistry of Cenozoic volcanic rocks of the Faroe Islands with a focus on their ultra-trace contents of Hg",
  booktitle="Proceedings: Students in Polar and Alpine Research Conference 2016",
  year="2016",
  series="1",
  edition="1",
  pages="41--42",
  publisher="Masaryk University",
  address="Brno",
  doi="10.13140/RG.2.1.4920.9201",
  isbn="978-80-210-8203-8",
  url="https://www.researchgate.net/publication/301822528_Geochemistry_of_Cenozoic_volcanic_rocks_of_the_Faroe_Islands_with_a_focus_on_their_ultratrace_contents_of_Hg",
  note="Abstract"
}