The figure below shows the paleogeography of the Mississippi River depositional system from approximately 6 Ma to 4 Ma (interval A). Deposition consists of net sand isopach thicks on the shelf and intraslope basins that are interpreted to be deepwater “fan” complexes.
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[[:file:sedimentary-basin-analysis_fig4-13.png|Figure 5]] shows the paleogeography of the Mississippi River depositional system from approximately 6 Ma to 4 Ma (interval A). Deposition consists of net sand isopach thicks on the shelf and intraslope basins that are interpreted to be deepwater “fan” complexes.