1990. "Conclusions", Siliciclastic Sequence Stratigraphy in Well Logs, Cores, and Outcrops: Concepts for High-Resolution Correlation of Time and Facies, J. C. Van Wagoner, R. M. Mitchum, K. M. Campion, V. D. Rahmanian
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Sequence stratigraphy provides a powerful methodology for analyzing time and rock relationships in sedimentary strata. Fundamental to sequence stratigraphy is the recognition that secIimentary rocks are composed of a hierarchy of stratal units, from the smallest megascopic unit, the lamina, to the largest unit considered in this book, the sequence. With theexception of the lamina, each of these units is a genetically related succession of strata bounded by chronostratigraphically significant surfaces. Correlation of these bounding surfaces provides a high-resolution chronostratigraphic framework for facies analysis and prediction of rock types at a regional to reservoir scale.
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Siliciclastic Sequence Stratigraphy in Well Logs, Cores, and Outcrops: Concepts for High-Resolution Correlation of Time and Facies
Application of sequence-stratigraphic analysis depends on the recognition of a hierarchy of stratal units including beds, bedsets, parasequences, parasequence sets, and sequences bounded by chronostratigraphically significant surfaces of erosion, nondeposition, or their correlative surfaces. This method of stratigraphic analysis contrasts with the use of transgressive and regressive cycles of strata for regional correlation of time and facies. Transgressive and regressive cycles have been used for regional correlation for at least 50 years. Recently, proponents of transgressive and regressive cycles, referred to as T-R units, for regional correlation have included Ryer (1983), Busch and Rollins (1984), Busch et al. (1985), and Galloway (1989a). Galloway (1989a) introduced the “genetic stratigraphic sequence,” which is a regressive depositional unit bounded by transgressive surfaces. Although he did not define it specifically, he described it as “a package of sediments recording a significant episode of basin-margin outbuilding and basin filling, bounded by periods of widespread basin margin flooding.”