Page 266 - Petroleum Geology

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ary migration, they must have taken place during the last stages before or
during accumulation. The anomaly is also a geological one.
Geochemical analyses suggest a Jurassic source in the Dogger and Lias, not
the Kimmeridge Clay; and the shallower possibilites are eliminated because
“lower Tertiary and Cretaceous source rocks of the Frigg area show only a
low degree of diagenesis” (Hkritier et al., 1979, p. 2019; 1980, p. 78).

S
0

UZERE WEST-2 UZERE NORTH -1
5000 7
b
6000-
7000-

8000-
9000 -
10,000 -

11,000-
12,000-
13,000 -
1000 0 1000 2000 3000FT
14,000- - T D 13,942’