The distribution of Hydrocarbons (HCs) within a basin depends on a number of factors notably the type of source material and the physicochemical history of the basin. Factors responsible for the distribution of HCs can be divided into two parts; syn and post accumulation factors depending on when they come to play.
Palaeontology in a broad sense is the study of the remains or traces of the activities of once living organisms called fossils which have been stored in rocks through natural processes. Palaeontology can generally be sub-divided into;
Micropaleontology, the study of macroscopic fossil such as dinosaurs, fossilized tree stumps etc.
Micropaleontology concerned with the study microscopic (micro) fossils. The term is sometime associated to the study of mineral walled microfossils such as foraminifera.