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 196

Strat.

Gamma Ray

Lithology/Core graph Interpretation

0 API 200

Rapid fall-out
in deep (?)
channel

Dune field

Migrating dunes
and plane beds

Deep (?) channel
dune fields and
bars

C

C

Channel base
Crevasse splay

S

Lake/palaeosol

Crevasse splay

Lake/palaeosol

Coal

Crevasse splay

Lake/palaeosol

Coal

S

VF FM
SAND

C C

CLAY

SILT

Grain size

Shell material
Nodules

Sandstone Lamination

Current ripples
Wave-ripples
Lenticular bedding

Mudrock

Hummocky cross-stratification

Calcite
Conglomerate
Cross-strat.

Swaley cross-stratification

C,S Carbonaceous, Siderite

Bioturbation

Soft sediment
deformation

Roots Core interval

Coal pieces

Fig. 5. Cored section and Gamma Ray curve from the Late Carnian upper Snadd Formation, well 7222/11-1, south-east
Loppa High. Note that the cored section is plotted on a different vertical scale than the wire-line curve.