Sedimentation at the Jurassic–Triassic boundary, south-west Barents Sea: indication of climate change - From Depositional Systems to Sedimentary Successions on the Norwegian Continental Margin - page 193

Hammerfest Basin Halten Terrace Viking Graben

Age
Ma

Stratigraphy Depositional setting Strat Depositional setting Strat Depositional setting

Tilje Tidal

Tidal flats and
channel systems

Marine

190

Lower delta
plain

Transgressive
shorelines

Shallow water
delta systems

Alluvial channel
and coal-bearing
strata

Stacked fluvial
channels
and floodplain/
delta plain

Upper delta
plain

Alluvial red beds
and grey beds

200

Alluvial Grey Beds

Alluvial red beds
and fluvial systems

Delta plain,
mouth bars and
shoreline

210 Pro-delta

Alluvial, ephemeral
sheet floods and
terminal lake
deposits

Alluvial red
beds with
fluvial systems

Marine anoxia
Transgression

Delta plain

220

Halite Evaporitic basin

Fig. 4. Late Triassic to Middle Jurassic stratigraphy of the Hammerfest Basin (after Mørk et al . 1999), with correlations to
the Halten Terrace and North Viking Graben. The stratigraphy from the Halten Terrace follows Dalland et al . (1988) and the
recent updates of Müller et al . (2005) for the Triassic succession and Morris et al . (2009) for the Åre Formation. The
lithostratigraphy in the Viking Graben follows the nomenclature of Vollset and Doré (1984) and the updated definitions of
Lervik (2006) and Nystuen et al . (this volume). The absolute time scale (Ma) follows Ogg et al . (2008), with the Triassic to
Jurassic boundary at 199.6 Ma.

Table 1. Well database with stratigraphic picks and formation thicknesses.

Formation tops (m) Formation thickness (m)

Well Snadd Fruholmen Tubåen Snadd Fruholmen Tubåen

7121/4-F-2H 2800 2678 109*

7121/5-1 2793 2572 2507 407** 221 65

7124/3-1 1438 1304 1285 455 75 20

7222/11-1 627 1413

7226/11-1 1296 1233.5 1199.5 582 62.5 34

*Corrected for well deviation.
**Formation not penetrated by well.