Jökull - 01.01.2017, Side 40

Holocene lavas in Bárðardalur, NE-Iceland
Figure 9. (a) MgO vs. TiO2 (wt%) and (b) Y vs. Zr (ppm) of samples of lavas in the Bárðardalur region com-
pared to analyses of the basement rocks of Bárðarbunga. (c) MgO vs. TiO2 (wt%) and (d) Y vs. Zr (ppm)
of samples of lavas in the Bárðardalur region compared to analyses of samples from Dyngjuháls. (e) MgO
vs. TiO2 (wt%) and (f) Y vs. Zr (ppm) of samples of lavas in the Bárðardalur region compared to analyses of
samples from Urðarháls, Hrímalda and Gígöldur. Error bars are smaller than or identical to the the size of the
symbols. GR: groundmass; WR: whole rock. – (a) MgO – TiO2 (þunga%) and (b) Y – Zr (ppm) breytileiki
hrauna Bárðardals borin saman við berggrunn Bárðarbungu. (c) MgO – TiO2 (þunga%) and (d) Y – Zr (ppm)
breytileiki hrauna Bárðardals borin saman við hrauneiningar á Dyngjuhálsi. (e) MgO – TiO2 (þunga%) and
(f) Y – Zr breytileiki hrauna Bárðardals borin saman við Gígöldur, Urðarháls og Hrímöldu.
JÖKULL No. 67, 2017 35