Environmental Engineering Reference
In-Depth Information
FIGURE 5
Upper offshore sandy mudstones containing ichnological suites consistent with the
archetypal expression of the
Cruziana
Ichnofacies. (A) BI
¼
5, with
Zoophycos
(
Z
),
Planolites
(
P
),
Asterosoma
(
As
),
Diplocraterion habichi
(
Dh
),
Chondrites
(
Ch
),
Cosmorhaphe
(
Cr
),
Phycosiphon
(
Ph
), and
Thalassinoides
(
Th
). (B) BI
¼
4, with a remnant, wavy parallel-laminated sandstone
bed interpreted as a tempestite. Trace-fossil suite consists of
Planolites
(
P
),
Chondrites
(
Ch
),
Diplocraterion habichi
(
Dh
),
Phycosiphon
(
Ph
),
Schaubcylindrichnus freyi
(
Sf
),
Zoophycos
(
Z
), and
Teichichnus
(
T
). (C) BI
¼
5 with
Cosmorhaphe
(
Cr
),
Planolites
(
P
),
Chondrites
(
Ch
),
Palaeophycus
heberti
(
Pa
),
Phycosiphon
(
Ph
),
Zoophycos
(
Z
), and
Asterosoma
(
As
). (D) BI
4, with a remnant,
parallel-laminated sand bed interpreted as a tempestite. Trace-fossil suite includes
Siphonichnus
(
Si
),
Planolites
(
P
),
Chondrites
(
Ch
),
Teichichnus
(
T
),
Phycosiphon
(
Ph
),
Thalassinoides
(
Th
), and
¼
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