S. Oropeza 1998 M.S. Thesis Abstract.
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The integrated interpretation carried out for the Huallaga Basin, northern Peru indicates that the Mio-Pliocene deformation of
the area is characterized by a thin-skinned structural style with north-east verging thrust systems. The thrust systems occur
mainly at the base of the Jurassic between Jurassic rocks and Jurassic-Triassic salt. Salt bodies located by gravity and surface
outcrops constitute potential thrust detachment surfaces. The structural style of the area makes the trapping of hydrocarbons
difficult. However, anticlines related to thrust and backthrust ramp systems might form structural traps.
This study includes a 2D dynamical quantitative model of the southern part of the basin. This model suggests that the
Chonta Formation might have started to generate hydrocarbons between 30 My and 25 My and that the migration might have
taken place between 25 My and 16 My. The dynamical model also indicates the important control exerted by Mio-Pliocene
erosion on the petroleum system. It suggests that some of the hydrocarbons might have migrated toward the flanks of the
structures in the southern part of the area and the rest might have been leaked out during the formation of the unconformity.
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