Changes

==Third-order sequence deposition==

==Third-order sequence deposition==

[[file:exploring-for-stratigraphic-traps_fig21-8.png|300px|thumb|{{figure number|1}}. Copyright: Hyne, 1995; courtesy Tulsa Geological Society.]]

[[file:exploring-for-stratigraphic-traps_fig21-8.png|300px|thumb|{{figure number|1}}Schematic cross section of a third-order sequence and its various systems tracts. Copyright: Hyne;<ref>Hyne, N. J., 1995, Sequence stratigraphy: a new look at old rocks, in N. J. Hyne, ed., Sequence Stratigraphy of the Mid Continent: Tulsa Geological Society Special Publication 4, p. 5–20.</ref> courtesy Tulsa Geological Society.]]

The schematic [[cross section]] in [[:file:exploring-for-stratigraphic-traps_fig21-9.png|Figure 2]] is a third-order sequence model based on observations of the [[Tertiary]] of the Gulf of Mexico passive margin basin.<ref name=ch21r47>Van Wagoner, J., C., Mitchum, R., M., Campion, K., M., Rahmanian, V., D., 1990, Siliciclastic Sequence Stratigraphy in Well Logs, Cores and Outcrops: Concepts for High-Resolution Correlation of Time and Facies: [http://store.aapg.org/detail.aspx?id=1196 AAPG Methods in Exploration Series No. 7], 55 p.</ref> Although different basin types, i.e., foreland basins or active margin basins, require adjustments to the model, the Gulf of Mexico model still is useful for understanding third-order sequence deposition.

The schematic [[cross section]] in [[:file:exploring-for-stratigraphic-traps_fig21-9.png|Figure 2]] is a third-order sequence model based on observations of the [[Tertiary]] of the Gulf of Mexico passive margin basin.<ref name=ch21r47>Van Wagoner, J., C., Mitchum, R., M., Campion, K., M., Rahmanian, V., D., 1990, Siliciclastic Sequence Stratigraphy in Well Logs, Cores and Outcrops: Concepts for High-Resolution Correlation of Time and Facies: [http://store.aapg.org/detail.aspx?id=1196 AAPG Methods in Exploration Series No. 7], 55 p.</ref> Although different basin types, i.e., foreland basins or active margin basins, require adjustments to the model, the Gulf of Mexico model still is useful for understanding third-order sequence deposition.

[[file:exploring-for-stratigraphic-traps_fig21-9.png|300px|thumb|{{figure number|2}}. Copyright: Haq, 1988; courtesy SEPM.]]

[[file:exploring-for-stratigraphic-traps_fig21-9.png|300px|thumb|{{figure number|2}}Third-order sequence model based on observations of the Tertiary of the Gulf of Mexico passive margin basin. Copyright: Haq;<ref>Haq, B. U., J. Hardenbol, and P. R. Vail, 1988, Mesozoic and Cenozoic chronostratigraphy and cycles of sea-level change in C. K. Wilgus, B. S. Hastings, H. W. Posamentier, J. Van Wagoner, C. A. Ross, and G. C. St. C. Kendall, eds., Sea-Level Change: An Integrated Approach: Society of Economic Paleontologists and Mineralogists Special Publication 42, p. 71–108.</ref> courtesy SEPM.]]

The order of deposition for the sequence shown in [[:file:exploring-for-stratigraphic-traps_fig21-9.png|Figure 2]] is as follows:<ref name=ch21r47 />

The order of deposition for the sequence shown in [[:file:exploring-for-stratigraphic-traps_fig21-9.png|Figure 2]] is as follows:<ref name=ch21r47 />

** Parasequences downlap onto the condensed section.

** Parasequences downlap onto the condensed section.

[[file:exploring-for-stratigraphic-traps_fig21-10.png|thumb|300px|{{figure number|3}}. Copyright: Weber et al., 1995; courtesy SEPM.]]

[[file:exploring-for-stratigraphic-traps_fig21-10.png|thumb|300px|{{figure number|3}}The Desmoinian of the Paradox basin, Utah, an example of a third-order depositional sequence. Copyright: Weber et al.;<ref>Weber, L. J., J. F. Sarg, and F. M. Wright, 1995, Sequence stratigraphy and reservoir delin- eation of the middle Pennsylvanian (Desmoinesian), Paradox basin and Aneth field, southwestern U.S.A., in J. F. Read, L. J. Weber, J. F. Sarg, and F. M. Wright, eds., Milankovitch Sea-Level Changes, Cycles, and Reservoirs on Carbonate Platforms in Greenhouse and Ice-House Worlds: SEPM Short Course No. 35, 79 p.</ref> courtesy SEPM.]]

==Third-order sequence example==

==Third-order sequence example==