Changes

==Biostratigraphic correlation of stacked sequences==

==Biostratigraphic correlation of stacked sequences==

The well correlation section on the next page is an example of using high-resolution biostratigraphic correlation to recognize depositional successions within stacked depositional sequences. In some basins containing nondescript fill that lacks unique marker beds, like the Gulf of Mexico, high-resolution biostratigraphic correlation is the best method for subdividing basin fill into sequences and systems tracts..<ref name=ch04r6>Armentrout, J., M., 1987, Integration of biostratigraphy and seismic stratigraphy: Pliocene–Pleistocene, Gulf of Mexico: Proceedings, Gulf Coast Section SEPM 8th Annual Research Conference, p. 6–14.</ref><ref name=ch04r34>Galloway, W., E., 1989a, Genetic stratigraphic sequences in basin analysis I: architecture and genesis of flooding-surface bounded depositional units: AAPG Bulletin, vol. 73, p. 125–142.</ref><ref name=ch04r35>Galloway, W., E., 1989b, Genetic stratigraphic sequences in basin analysis II: application to northwest Gulf of Mexico Cenozoic basin: AAPG Bulletin, vol. 73, p. 143–154.</ref>

The well correlation section on the next page is an example of using high-resolution biostratigraphic correlation to recognize depositional successions within stacked depositional sequences. In some basins containing nondescript fill that lacks unique marker beds, like the Gulf of Mexico, high-resolution biostratigraphic correlation is the best method for subdividing basin fill into sequences and systems tracts..<ref name=ch04r6>Armentrout, J., M., 1987, Integration of biostratigraphy and seismic stratigraphy: Pliocene–Pleistocene, Gulf of Mexico: Proceedings, Gulf Coast Section SEPM 8th Annual Research Conference, p. 6–14.</ref><ref name=ch04r34>Galloway, W., E., 1989a, [http://archives.datapages.com/data/bulletns/1988-89/data/pg/0073/0002/0100/0125.htm Genetic stratigraphic sequences in basin analysis I: architecture and genesis of flooding-surface bounded depositional units]: AAPG Bulletin, vol. 73, p. 125–142.</ref><ref name=ch04r35>Galloway, W., E., 1989b, [http://archives.datapages.com/data/bulletns/1988-89/data/pg/0073/0002/0100/0143.htm Genetic stratigraphic sequences in basin analysis II: application to northwest Gulf of Mexico Cenozoic basin]: AAPG Bulletin, vol. 73, p. 143–154.</ref>

The four wells in the cross section are in a depositionally dip-oriented transect<ref name=ch04r9 /> The correlation horizons, based on seven chronostratigraphically significant bioevents (mostly extinction events), partition the strata into age-correlative intervals.<ref name=ch04r10 /> Most of the chronostratigraphically significant bioevents occur in association with maximum fossil abundance, resulting in the interpretation of these correlation horizons as maximum flooding surface-condensed section data<ref name=ch04r34 /><ref name=ch04r35 /><ref name=ch04r10 /><ref name=Shaffer1987a>Schaffer, B. L., 1987a, The potential of calcareous nannofossils for recognizing Plio-Pleistocene climactic cycles and sequence boundaries on the shelf: Proceedings, Gulf Section SEPM 8th Annual Research Conference, p. 142-145.</ref><ref name=Shaffer1987b>Schaffer, B. L., 1987b, The nature and significance of condensed sections in Gulf Coast late Neogene sequence stratigraphy: Gulf Coast Assoc. of Geological Societies Transactions, vol. 40, p. 186-195.</ref><ref name=ch04r72>Pacht, J., A., Bowen, B., E., Bearn, J., H., Schaffer, B., L., 1990, [[Sequence stratigraphy]] of Plio–Pleistocene depositional facies in the offshore Louisiana south additions: Gulf Coast Assoc. of Geological Societies Transactions, vol. 40, p. 1–18.</ref><ref name=ch04r9 />

The four wells in the cross section are in a depositionally dip-oriented transect<ref name=ch04r9 /> The correlation horizons, based on seven chronostratigraphically significant bioevents (mostly extinction events), partition the strata into age-correlative intervals.<ref name=ch04r10 /> Most of the chronostratigraphically significant bioevents occur in association with maximum fossil abundance, resulting in the interpretation of these correlation horizons as maximum flooding surface-condensed section data<ref name=ch04r34 /><ref name=ch04r35 /><ref name=ch04r10 /><ref name=Shaffer1987a>Schaffer, B. L., 1987a, The potential of calcareous nannofossils for recognizing Plio-Pleistocene climactic cycles and sequence boundaries on the shelf: Proceedings, Gulf Section SEPM 8th Annual Research Conference, p. 142-145.</ref><ref name=Shaffer1987b>Schaffer, B. L., 1987b, The nature and significance of condensed sections in Gulf Coast late Neogene sequence stratigraphy: Gulf Coast Assoc. of Geological Societies Transactions, vol. 40, p. 186-195.</ref><ref name=ch04r72>Pacht, J., A., Bowen, B., E., Bearn, J., H., Schaffer, B., L., 1990, [[Sequence stratigraphy]] of Plio–Pleistocene depositional facies in the offshore Louisiana south additions: Gulf Coast Assoc. of Geological Societies Transactions, vol. 40, p. 1–18.</ref><ref name=ch04r9 />