Changes

==GOM basin depocenter time intervals==

==GOM basin depocenter time intervals==

In the northern GOM basin, depocenters prograde (Figure 4-4) over the transitional crust (Figure 4-6) and deform the underlying salt into a complex network of salt-cored anticlines and salt-withdrawal synclines (Figures 4-8, 9). Late Neogene depocenters of the Mississippi River, the largest source of sediment to the northern Gulf of Mexico, developed during five time periods from the latest Miocene through Holocene (from ;<ref name=ch04r75>Piggott, N., Pulham, A., 1993, Sedimentation rate as the control on hydrocarbon sourcing, generation, and [[migration]] in the deepwater Gulf of Mexico: Proceedings, Gulf Coast Section SEPM 14th Annual Research conference, p. 179–191.</ref> see also .<ref name=ch04r38>Goldthwaite, D., 1991, Central Gulf Coast stratigraphy, in Goldthwaite, D., ed., An Introduction to Central Gulf Coast Geology: New Orleans Geological Society, p. 17–30.</ref> Following are the five depocenter intervals and their time periods.

 

In the northern GOM basin, depocenters prograde ([[:file:sedimentary-basin-analysis_fig4-4.png|Figure 1]]) over the transitional crust ([[:file:sedimentary-basin-analysis_fig4-6.png|Figure 2]]) and deform the underlying salt into a complex network of salt-cored anticlines and salt-withdrawal synclines (Figures 4-8, 9). Late Neogene depocenters of the Mississippi River, the largest source of sediment to the northern Gulf of Mexico, developed during five time periods from the latest Miocene through Holocene (from ;<ref name=ch04r75>Piggott, N., Pulham, A., 1993, Sedimentation rate as the control on hydrocarbon sourcing, generation, and [[migration]] in the deepwater Gulf of Mexico: Proceedings, Gulf Coast Section SEPM 14th Annual Research conference, p. 179–191.</ref> see also .<ref name=ch04r38>Goldthwaite, D., 1991, Central Gulf Coast stratigraphy, in Goldthwaite, D., ed., An Introduction to Central Gulf Coast Geology: New Orleans Geological Society, p. 17–30.</ref> Following are the five depocenter intervals and their time periods.

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[[:file:sedimentary-basin-analysis_fig4-13.png|Figures 3]], [[:file:sedimentary-basin-analysis_fig4-14.png|4]], [[:file:sedimentary-basin-analysis_fig4-15.png|5]], and [[:file:sedimentary-basin-analysis_fig4-16.png|6]] are maps of depocenters and paleogeography for intervals A, B, D, and E. These were constructed by correlating wells using fossil extinction events and grids of interpreted seismic reflection profiles. The High Island–East Breaks study area is shown on each map.

 

[[file:sedimentary-basin-analysis_fig4-13.png|thumb|{{figure number|4-13}}After Piggott and Pulham<ref name=ch04r75 />). Copyright: Gulf Coast Section SEPM.]]

 

[[file:sedimentary-basin-analysis_fig4-14.png|thumb|{{figure number|4-14}}After Piggott and Pulham<ref name=ch04r75 />). Copyright: Gulf Coast Section SEPM.]]

 

[[file:sedimentary-basin-analysis_fig4-15.png|thumb|{{figure number|4-15}}After Piggott and Pulham<ref name=ch04r75 />). Copyright: Gulf Coast Section SEPM.]]

 

[[file:sedimentary-basin-analysis_fig4-16.png|thumb|{{figure number|4-16}}After Piggott and Pulham<ref name=ch04r75 />).]]

==Formation of high island-east breaks depocenter==

==Formation of high island-east breaks depocenter==