STUDY OF PRIMARY MIGRATION IN QUERECUAL FORMATION BY X-RAY ELECTRON PROBE MICROANALYSIS.

The study of chemical elements behavior in the depositational environmental and the relation between them, allows to infer the physical-chemical paleoenvironmental conditions, besides, it is used for study of hydrocarbon source-rock, and understanding primary migration. Therefore, the aim of this work is the study of spatial distribution and the association of the major (C, S, Si, Fe, K, Mg, P and Al) and trace (V, Ni, Zn) elements, with organic matter (accumulate in fracture during primary migration) and inorganic phases (minerals), by means of electron probe microanalysis (EPMA). The results shows that only elements associate to organic matter (found it in fractures and fossils) were S, Ni and V. The fractures are the principal route of migration; this is demonstrated by the association between the C, S, V and Ni. Additionally were found some elemental relation that it allowed to infer paleoenviromental conditions.