الفهرس 
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Abstract
This study aims at assessing the hydrocarbon source rocks of the Belayim oilfields
in the Gulf of Suez area through detailed geochemical methods to characterize organicrich
facies of the Upper Cretaceous-Eocene deposits. The source rocks are mainly
derived from algae and bacteria with a minimal contribution of terrestrial organic
sources, mainly clay-poor source rocks deposited under normal saline and reducing
paleoenvironmental conditions. The source rock extracts range from immature to
marginally mature, based on Tmax, and biomarker maturity-related parameters.
This is the first palynofacies study of the Upper Cretaceous-Eocene deposits in the Gulf
of Suez that revealed the presence of two palynofacies associations. The first
association shows abundant highly fluorescent bacterially-derived (AOM) of kerogen
Type-II deposited in a distal suboxic–anoxic environment. The other association
elucidates a moderately fluorescent AOM with abundant phytoclasts and rare
palynomorphs. Its deposition took place in a marginal dysoxic-anoxic basin to proximal
suboxic–anoxic shelf environments, representing kerogen Type-III/II. This interval is
characterized by the angiosperm pollen Droseridites senonicus, Arecipites sp.,
Liliacidites sp. and dinocysts assigned to Odontochitina porifera and Isabelidinium sp.
indicating a Turonian-Santonian age.
A similar geochemical scenario is depicted from the studied crude oil samples as they
showed a partial positive correlation with the Thebes and Brown Limestone
formations. The terrestrial contribution of the Matulla Formation to the oil generation
cannot be excluded as it may trigger some oil in the study area.
Key words: (not more than ten):
Rock-Eval, Palynofacies, Biomarkers, Upper Cretaceous-Eocene Succession, Belayim
oilfields, Gulf of Suez.