Jökull - 01.12.2007, Side 12

Símonarson and Leifsdóttir
Figure 3. Geological sections from Búlandshöfði Formation, Snæfellsnes, western Iceland, and from the Máná
Formation at Tjörnes, North Iceland. – Jarðlagasnið úr Búlandshöfðamyndun á Snæfellsnesi og Mánármyndun
í Breiðuvík á Tjörnesi.
During a glacial stage, about 1.1 Ma years ago,
the glaciers on the Snæfellsnes Peninsula retreated,
the sea level rose and the glaciomarine sediments of
the Búland Member were deposited during a trans-
gression. Finally marine regression led to the non-
marine sedimentation of the StöðMember, situated in
the more lateral (near shore) part of the sedimentary
basin. At the same time the sediments of the Höfði
Member became intertidal, containing a typical ther-
mophilic littoral fauna living in the beginning of an
interglacial period when the sea temperature had in-
creased considerably.
10 JÖKULL No. 57