Tang Formation (Tangformasjonen)
(From NPD Bulletin no. 4)
From the Norwegian name for seaweed. The formation corresponds to the informal Bodø formation
Well type section
(Statoil), coordinates 64°38'29.62"N, 07°52'31.53"E, from 1745 m to
1673 m (Fig. 35). No cores.
72 m in the type well.
Dark grey to brown claystone with minor sandstone and limestone.
The base is defined by an increase in interval transit time on the
sonic log and a decrease in density and resistivity log readings.
Lateral extent and variation
The formation thins towards the northeast. It is not present on the Nordland Ridge.
Danian to late Paleocene.
The sediments were deposited in a deep marine environment.