FACIAL UNCONFORMITIES AND FACIAL SERIES IN THE SEQUENCE STRATIGRAPHY
https://doi.org/10.31660/0445-0108-2018-6-24-32
Abstract
The sequence stratigraphy is currently, on the one hand, a leading approach in the study of the internal structure of sedimentary basins, on the other hand, a creatively developing discipline, the conceptual basis of which is being developed. The concept of a «system tract» is one of the most questionable concepts of sequence stratigraphy. According to the classical definition, system tract is a lateral sequence of facies, in accordance with modern definitions system tract is a geological body bounded by sequence-stratigraphic surfaces. It remains unclear: whether the idea of the lateral ordering of the system tract has been preserved in the modern definition. The author of the article has performed an analysis of two well-known sequence-stratigraphic models to answer this question. It is model Depositional Sequence II and model Depositional Sequence IV. The concepts of «facial unconformities» and «facial series» became the basis of the analysis. The author has constructed his own version of the sequence-stratigraphic model for the sedimentary basin. According to the results of its analysis, the author proposes to include the concept of «facial series» in the theoretical basis of sequence stratigraphy. The concept of a «system tract» is recommended to consider as a geological body bounded by genetic facial unconformities.
About the Author
M. V. Lebedev
LLC «Tyumen Oil Research Center», Tyumen
Russian Federation
Doctor of Geology and Mineralogy, Geology Expert
Russian Federation
Doctor of Geology and Mineralogy, Geology Expert
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Review
For citations:
Lebedev M.V. FACIAL UNCONFORMITIES AND FACIAL SERIES IN THE SEQUENCE STRATIGRAPHY. Oil and Gas Studies. 2018;(6):24-32. (In Russ.) https://doi.org/10.31660/0445-0108-2018-6-24-32
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