The Garn Formation (Bajocian-Bathonian) in the Kristin Field, Halten Terrace: its origin, facies architecture and primary heterogeneity model - From Depositional Systems to Sedimentary Successions on the Norwegian Continental Margin - page 527

6506/11-6

6406/2-R-4H

6406/2-5 AT 2

6406/2-5

6506/11-N-3 H

6406/2-3 T3

Basal Melke Fm.

C Wave-worked deposits

Garn Fm. and
its main facies
associations

Inter-ridge deposits

B

Sequence boundary

5m

Tidal ridges

A

Flooding surface

Not Fm.

0 3 km

Fig. 8. Core-log correlation panel with an interpreted stratigraphic distribution of the main facies associations of the Garn
Fm. (for the location of wells, see Fig. 4). The unconformable base of the formation, used as a datum, is considered to be a
wave-cut erosional surface with negligible primary relief in the N-S direction (cf. Fig. 5).

(Gjelberg et al ., 1987; Dalland et al ., 1988). The
depositional system is considered to have been a
sandy shoreface that extended eastwards across an
active shallow graben where tidal currents were
amplified, reworking the entrapped sand into longi-
tudinal bars. Subaqueous dune complexes forming

tidal sand bars have been reported from many mod-
ern and ancient marine grabens (e.g. Montenat et al .,
1987; Santisteban & Taberner, 1988; Surlyk, 1991,
2003; Keene & Harris, 1995; Mellere & Steel, 1996;
Carr et al ., 2003; Longhitano & Nemec, 2005) and
have also been suggested for the Garn Formation in