Abstract
Quantitative cyclostratigraphic analyses are used to identify the periodic stratigraphic patterns observed in the sedimentary record. This is done by decoding the cyclic changes in the thickness and composition of sedimentary cycles. Statistical techniques have been developed to make easier this task and to determine the periodicity of the cycles. As an example, it is going to be presented a study ofthe Oligocene-Miocene succession of the Campos Basin, where the carbonate sedimentation, responsible for the amount of calcium carbonate of the slope mudstones, was controlled by the orbital Milankovitch band. A complementary approach using stable oxygen isotopes is also presented, based on bulk samples from cuttings, which allowed a better understancling of the stratigraphic record and its refinement.
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