Changes

==Stratal pattern simulation==

==Stratal pattern simulation==

[[file:sedimentary-basin-analysis_fig4-18.png|thumb|{{figure number|6}}After Vail.<ref name=ch04r99>Vail, P., R., 1987, [http://archives.datapages.com/data/specpubs/oversiz2/data/a188/a188/0001/0000/0001.htm Seismic stratigraphy interpretation procedure], in Bally, A., W., ed., Atlas of Seismic Stratigraphy: [http://store.aapg.org/detail.aspx?id=478 AAPG Studies in Geology No. 27], p. 1–10.</ref> and Loutit et al.<ref name=ch04r59>Loutit, T., S., Hardenbol, J., Vail, P., R., Baum, G., R., 1988, Condensed sections: the key to age determination and correlation of continental margin sequences: SEPM Special Publication 42, p. 183–213.</ref>]]

[[file:sedimentary-basin-analysis_fig4-18.png|300px|thumb|{{figure number|6}}Computer-simulated stacking pattern of stratal units within an unconformity-bound depositional sequence. After Vail.<ref name=ch04r99>Vail, P., R., 1987, [http://archives.datapages.com/data/specpubs/oversiz2/data/a188/a188/0001/0000/0001.htm Seismic stratigraphy interpretation procedure], in Bally, A., W., ed., Atlas of Seismic Stratigraphy: [http://store.aapg.org/detail.aspx?id=478 AAPG Studies in Geology No. 27], p. 1–10.</ref> and Loutit et al.<ref name=ch04r59>Loutit, T., S., Hardenbol, J., Vail, P., R., Baum, G., R., 1988, Condensed sections: the key to age determination and correlation of continental margin sequences: SEPM Special Publication 42, p. 183–213.</ref>]]

[[file:sedimentary-basin-analysis_fig4-26.png|thumb|{{figure number|7}}Modified. Copyright: Haq et al. (1988); courtesy SEPM.]]

[[file:sedimentary-basin-analysis_fig4-26.png|300px|thumb|{{figure number|7}}Modified. Copyright: Haq et al. (1988); courtesy SEPM.]]

[[:file:sedimentary-basin-analysis_fig4-18.png|Figure 6]] shows the computer-simulated stacking pattern of stratal units within an unconformity-bound depositional sequence. [For computer modeling, see Jervey.<ref name=ch04r49>Jervey, M., T., 1988, Quantitative geologic modeling of siliciclastic rock sequences and their seismic expression: SEPM Special Publication 42, p. 47–69.</ref>] The simulation forces all sediment to be deposited within the 2-D plain of the diagram. In the natural world, the depositional thicks associated with each systems tract are likely to occur lateral to each other, and their recognition requires a 3-D data set. Additionally, postdepositional deformation and erosion significantly modify the idealized geometry shown in [[:file:sedimentary-basin-analysis_fig4-18.png|Figures 6]] and [[:file:sedimentary-basin-analysis_fig4-26.png|7]].

[[:file:sedimentary-basin-analysis_fig4-18.png|Figure 6]] shows the computer-simulated stacking pattern of stratal units within an unconformity-bound depositional sequence. [For computer modeling, see Jervey.<ref name=ch04r49>Jervey, M., T., 1988, Quantitative geologic modeling of siliciclastic rock sequences and their seismic expression: SEPM Special Publication 42, p. 47–69.</ref>] The simulation forces all sediment to be deposited within the 2-D plain of the diagram. In the natural world, the depositional thicks associated with each systems tract are likely to occur lateral to each other, and their recognition requires a 3-D data set. Additionally, postdepositional deformation and erosion significantly modify the idealized geometry shown in [[:file:sedimentary-basin-analysis_fig4-18.png|Figures 6]] and [[:file:sedimentary-basin-analysis_fig4-26.png|7]].