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T
T
P
T
C
P
T
P
C
P
T
A
B
T
P
T
S
S
S
P
C D
FIGURE 5
Ichnofabrics in vertically slabbed cores from wells in the Fram Field area, offshore
Norway (Block 35/11), containing Upper Jurassic (Oxfordian) shelf turbidite deposits. (A) Gravel,
deposited on channelized fans, with abundant sand-filled
Thalassinoides
(
T
) and an thickly lined
Palaeophycus
ichnoclast (
P
) in a deep-tier colonization. (B) Proximal turbidite deposit, with internal
subdivision that can be recognized by multiple colonization surfaces (arrows).
Cylindrichnus
(
C
)
occurring as a discrete trace fossil, while the upper sand layer shows a mottled fabric (mixed zone).
The muddy burrow fills and drapes include
Palaeophycus
(
P
). (C) Thin-bedded turbidite deposit,
dominated by
Scolicia
(
S
), interbedded with intensely bioturbated heterolithic shelf sandstone con-
taining minute
Planolites
,
Palaeophycus
, and
Phycosiphon
. (D) Completely bioturbated sandy clay-
stone with
Phycosiphon
(
P
),
Schaubcylindrichnus
(
S
), and
Teichichnus
(
T
).
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