Changes

</gallery>

</gallery>

[[: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 plane of the diagram. In the natural world, the depositional thicks associated with each systems tract are likely to occur laterally 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]].

==Parasequences==

==Parasequences==