--> Lithostratigraphy vs. Sequence Stratigraphy, by A. D. Donovan; #90986 (1994).
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Abstract: Lithostratigraphy vs. Previous HitSequenceNext Hit Previous HitStratigraphyNext Hit

Art D. Donovan

Traditional lithostratigraphy utilizes facies boundaries, pebble lags, and/or transgressive surfaces as the basis for regional correlations and the subdivision of sedimentary rocks. This methodology provides an excellent Previous HitframeworkNext Hit for mapping, defining, and naming stratigraphic units.

In contrast, Previous HitsequenceNext Hit Previous HitstratigraphyNext Hit utilizes stratal surfaces (bed, bedset, parasequence, parasequence-set, and Previous HitsequenceNext Hit boundaries) as the basis for regional correlations. Stratal surfaces separate older rocks below from younger strata above, and therefore have chronostratigraphic significance. Since stratal surfaces typically cross lithostratigraphic boundaries and have chronostratigraphic significance, they can be used to subdivide the rock record into genetically related packages of strata (bed, bedsets, parasequence, parasequence set, Previous HitsequenceNext Hit) that are inherently different from traditional lithostratigraphic units (group, formation, member, bed). Thus, Previous HitsequenceNext Hit Previous HitstratigraphyNext Hit provides geologists with an alternative methodology to subdivide the stratigraphic record, and evaluate the temporal and spatial distribution of facies.

The role of Previous HitsequenceNext Hit Previous HitstratigraphyNext Hit in providing new insights into stratigraphic relationships will be illustrated using selected examples from the Cretaceous of North America. In these examples, Previous HitsequenceNext Hit Previous HitstratigraphyNext Hit offers a more predictive Previous HitframeworkNext Hit to explain the distribution of reservoir-quality sandstones and stratigraphic Previous HittrapsTop than traditional lithostratigraphic frameworks.

AAPG Search and Discovery Article #90986©1994 AAPG Annual Convention, Denver, Colorado, June 12-15, 1994