Methodology and Techniques - Trace Fossils as Indicators of Sedimentary Environments - page 251

FIGURE 7 Well-core slabs from the Norwegian North Sea. (A) Slabbed core (half cut) on display
for sedimentological and ichnological logging. (B) Highly bioturbated sandstone comprising a
Lingulichnus ichnofabric, Early Jurassic Cook Formation. (C) Oil-saturated sandstone with an
apparently homogeneous fabric, Middle Jurassic Hugin Formation. (D) Same sample as in (C)
but under UV light, revealing internal bedding, colonization surfaces, and discrete trace fossils.
approaches ( Bockelie, 1991; Bromley, 1996; Chamberlain, 1978; Gerard and
Bromley, 2008; MacEachern et al., 2007; McIlroy, 2004; Pemberton, 1992 ).
Trace-fossil identification is not straightforward in two-dimensional core
slabs, and often only limited information about the whole morphology, partic-
ularly of complex trace fossils, can be achieved. In contrast, different planes of
sections through the trace fossils may reveal very precisely the morphological