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Sequence stratigraphy is an approach to analyzing lithologic successions within a time framework. This approach is applicable at a broad spectrum of scales, ranging from basinwide regional analyses to local field-development studies. The most effective application of these concepts is through the integration of a number of different data sets, with each contributing to the final interpretation. Seismic data provide continuous subsurface imaging; well-log data contribute insights regarding vertical stratigraphic stacking patterns as well as lateral facies trends; core data are essential for calibrating well-log and seismic data; outcrop data are essential for establishing the process-sedimentological framework; geochemical and paleontological data provide useful insights regarding paleo-environments as well as processes active at the time of deposition. Clearly, the greater the degree of data integration, the more robust the final interpretation.

It can be argued that applying sequence-stratigraphic concepts merely involves doing "good" geology. Many of these "sequence-stratigraphic" concepts have been embraced by the geological community at least since the beginning of the twentieth century. Indeed, the first principles upon which sequence stratigraphy is based are some of the cornerstones of sedimentary geology. Thus, the role of cyclic variations of sea level was recognized many decades ago (e.g., Gilbert, 1895; Wanless and Shepard, 1936; Wheeler and Murray, 1957). Moreover, subdivision of stratigraphic successions into "sequences" by "unconformity" surfaces is also not new (e.g., Wheeler, 1959; Sloss, 1962, 1963). However, the further recognition and interpretation of systems tracts within the sequences, embodied in what we now refer to as sequence stratigraphy, and

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