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...Chapter sequence stratigraphy introduction current stratigraphic concepts may clarify the controls on distribution and extents thickness quality of eastern kansas coal seams these parameters can influence gas content is study sedimentation patterns facies relationships within a chronostratigraphic framework erosional or non depositional surfaces their lateral correlative conformities van wagoner et al posamentier allen used to analyze ways that sedimentary basins fill classify strata into predictive for correlation describe spatial temporal reservoir correlate global sea level records sequences boundaries defined as succession relatively conformable genetically related bounded at top base by unconformable landward basinward fundamental unit analysis are unconformities laterally continuous over least basin scale separate older underlying sediments from younger overlying significant hiatus be recognized in well log core outcrop one more following criteria subaerial truncation channel inc...