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[[Sequence stratigraphy]] is the study of genetically related facies within a framework of [http://www.stratigraphy.org/upload/bak/chron.htm chronostratigraphically] significant surfaces.<ref name=ch17r92>Van Wagoner, J., C., Mitchum, R., M., Campion, K., M., Rahmanian, V., D., 1990, Siliciclastic sequence stratigraphy in well logs, cores, and outcrops: [http://store.aapg.org/detail.aspx?id=1196 AAPG Methods in Exploration 7], 55 p.</ref> Paleontologic data, integrated with [[Seismic data|seismic]] and [[Basic open hole tools|well log data]], are an integral part of sequence stratigraphic analysis. [[Paleontology]] provides two critical types of data:

[[Sequence stratigraphy]] is the study of genetically related facies within a framework of [http://www.stratigraphy.org/upload/bak/chron.htm chronostratigraphically] significant surfaces.<ref name=ch17r92>Van Wagoner, J. C., R. M. Mitchum, K. M. Campion, and V. D. Rahmanian., 1990, Siliciclastic sequence stratigraphy in well logs, cores, and outcrops: [http://store.aapg.org/detail.aspx?id=1196 AAPG Methods in Exploration 7], 55 p.</ref> Paleontologic data, integrated with [[Seismic data|seismic]] and [[Basic open hole tools|well log data]], are an integral part of sequence stratigraphic analysis. [[Paleontology]] provides two critical types of data:

* Age control for chronostratigraphic horizons, especially [[Definitions_of_depositional_system_elements#Sequence_boundaries|sequence boundaries]]

* Age control for chronostratigraphic horizons, especially [[Definitions_of_depositional_system_elements#Sequence_boundaries|sequence boundaries]]

Among chronostratigraphically significant surfaces, the sequence boundary and the [[Definitions_of_depositional_system_elements#Maximum_flooding_surface|maximum flooding surface]] (i.e., [http://www.glossary.oilfield.slb.com/en/Terms/d/downlap.aspx downlap] surface on seismic profiles) are of particular importance. [[Paleontology]] provides two important constraints on these surfaces:

Among chronostratigraphically significant surfaces, the sequence boundary and the [[Definitions_of_depositional_system_elements#Maximum_flooding_surface|maximum flooding surface]] (i.e., [http://www.glossary.oilfield.slb.com/en/Terms/d/downlap.aspx downlap] surface on seismic profiles) are of particular importance. [[Paleontology]] provides two important constraints on these surfaces:

* Chronostratigraphic correlation controls<ref name=ch17r10>Baum, G., R., Vail, P., R., 1987, Sequence stratigraphy, allostratigraphy, isotope stratigraphy, and biostratigraphy: putting it all together in the Atlantic and Gulf Paleogene, in Innovative Biostratigraphic Approaches to Sequence Analysis: New Exploration Opportunities: Selected Papers and Illustrated Abstracts of the Eighth Annual Research conference of the Gulf Coast Section of the Society of Economic Paleontologists and Mineralogists Foundation, p. 15–23.</ref>

* Chronostratigraphic correlation controls<ref name=ch17r10>Baum, G. R., and P. R. Vail, 1987, Sequence stratigraphy, allostratigraphy, isotope stratigraphy, and biostratigraphy: putting it all together in the Atlantic and Gulf Paleogene, in Innovative Biostratigraphic Approaches to Sequence Analysis: New Exploration Opportunities: Selected Papers and Illustrated Abstracts of the Eighth Annual Research conference of the Gulf Coast Section of the Society of Economic Paleontologists and Mineralogists Foundation, p. 15–23.</ref>

* Numerical ages for rate-dependent analyses

* Numerical ages for rate-dependent analyses

==Chronostratigraphic correlation==

==Chronostratigraphic correlation==

The sequence stratigraphy model postulates a worldwide succession of depositional events such as coastal [http://www.glossary.oilfield.slb.com/en/Terms.aspx?LookIn=term%20name&filter=onlap onlap] and oceanic [http://www.merriam-webster.com/dictionary/anoxic anoxic] events<ref name=ch17r5>Arthur, M., A., Dean, W., E., 1986, Cretaceous paleoceanography, in Tucholke, B., E., Vogt, P., R., eds., Decade of North American Geology, Western North Atlantic Basin Synthesis Volume: Geological Society of America, p. 617–630.</ref> primarily reflecting global cyclic changes in [http://www.sepmstrata.org/Terminology.aspx?id=eustatic eustatic] sea level. This succession ideally is represented by a sea level onlap-[http://www.answers.com/topic/offlap offlap] curve such as the Haq et al.<ref name=ch17r43>Haq, B., U., Hardenbol, J., Vail, P., R., 1988, Mesozoic and Cenozoic chronostratigraphy and cycles of sea-level change, in Wilgus, C., K., Hastings, B., S., Kendall, C., G. St. C., Posamentier, H., W., Ross, C., A., Van Wagoner, John C., eds., Sea-level Change: An Integrated Approach: SEPM Special Publication 42, p. 71–108.</ref> cycle chart.

The sequence stratigraphy model postulates a worldwide succession of depositional events such as coastal [http://www.glossary.oilfield.slb.com/en/Terms.aspx?LookIn=term%20name&filter=onlap onlap] and oceanic [http://www.merriam-webster.com/dictionary/anoxic anoxic] events<ref name=ch17r5>Arthur, M. A., and W. E. Dean, 1986, Cretaceous paleoceanography, in B. E. Tucholke, and P. R. Vogt, eds., Decade of North American Geology, Western North Atlantic Basin Synthesis Volume: Geological Society of America, p. 617–630.</ref> primarily reflecting global cyclic changes in [http://www.sepmstrata.org/Terminology.aspx?id=eustatic eustatic] sea level. This succession ideally is represented by a sea level onlap-[http://www.answers.com/topic/offlap offlap] curve such as the Haq et al.<ref name=ch17r43>Haq, B. U., J. Hardenbol, P. R. Vail, 1988, Mesozoic and Cenozoic chronostratigraphy and cycles of sea-level change, in C. K. Wilgus, B. S. Hastings, C. G. St. C. Kendall, H. W. Posamentier, C. A. Ross, and J. C. Van Wagoner, eds., Sea-level Change: An Integrated Approach: SEPM Special Publication 42, p. 71–108.</ref> cycle chart.

One problem frequently confronted in sequence studies is determining which of these worldwide events is represented in the section of interest. Correlating a local section to the global cycles requires accurate and precise [[Biostratigraphic correlation and age determination|biostratigraphy]], either through zonal age determination or by providing the necessary age constraints on [[magnetostratigraphic]] or [[Stable isotope stratigraphy|isotope stratigraphic]] interpretations. When based on reliable age control, correlation with the succession of global processes can be a valuable predictive stratigraphic tool for understanding the temporal and areal distribution of [[reservoir]], [[Source rock|source]], and [[seal]] rocks.

One problem frequently confronted in sequence studies is determining which of these worldwide events is represented in the section of interest. Correlating a local section to the global cycles requires accurate and precise [[Biostratigraphic correlation and age determination|biostratigraphy]], either through zonal age determination or by providing the necessary age constraints on [[magnetostratigraphic]] or [[Stable isotope stratigraphy|isotope stratigraphic]] interpretations. When based on reliable age control, correlation with the succession of global processes can be a valuable predictive stratigraphic tool for understanding the temporal and areal distribution of [[reservoir]], [[Source rock|source]], and [[seal]] rocks.