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ESSO EXPLORATION AND PRODUCTION AUSTRALIA INC
STRATIGRAPHY
OFFSHORE GIPPSLANO BASIN

CURNARD FM.

FLOUN~ER FM.
p to 1500’ Marginal Marine Predominantlv Non Marine
I
I l h \ Lacustrine and Fluviatile
Estimated up to 15.000’

STRZELECKI GROUP
C.hugheri
Up to 10,000’ Won Marine
\
I c rtylosus \

Fig. 13-12. Stratigraphic chart, Gippsland basin (offshore). (Courtesy of Esso Australia
Ltd.)

To the south of Marlin lies the Halibut oil field. It too is an unconformity
trap in westerly-dipping Latrobe Group reservoirs, sealed at the subcrops by
the Lakes Entrance Formation. A constant oil/water contact was found at
2396 m, unaffected by a fault that terminates at or below the unconformity
surface. Close to the west of Halibut, a new accumulation of oil was found
(Thornton et al., 1980) in younger Latrobe Group reservoirs that are also