25th International Meeting on Organic Geochemistry IMOG 2011

P-320
Geochemical evaluation of sources rocks from Ain Regada
region, Northern Algeria
Aziez Mebarka
Sonatrach, Exploration Division, Boumerdes, Algeria (corresponding author:anissaz2001@yahoo.fr)
The present study focuses on the
geochemical evaluation as well as the molecular
organic geochemistry, especially biological marker
distributions of sources rocks in Ain Regada region,
northern Algeria.
The study area is situated in northern Algeria
and bounded to the east by the Tunisian border, to
the north by the high plains and to the south by the
Sahara platform. This area contains several gas and
oil shows.
This paper reports a study of a geochemical
evaluation involving 50 outcrop samples from
Coniacian, Paleocene, Cenomanian/Santonian and
Albian sediments.
From the bulk data of these outcrop samples,
there are some excellent Cenomanian/Coniacian,
Paleocene source rocks.
Based on biological marker distributions,
these source rocks appear to be of marine input and
depositional environment. They are constituted by a
combination of algal and amorphous material. Based
on maturity parameters, these outcrop rock samples
are mature and probably have generated already
liquid hydrocarbons in the area of study.
The whole variations recovered depend on
the nature and maturity of the source rocks and they
are the results of thermal and geodynamic activities
happened in northern Algeria.
Key-words: Northern Algeria, Cenomanian,
Coniacian, Paleocene, outcrops, biological markers,
source rocks,
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