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Sedimentary Basins. Sedimentary basins – definition Large areas of positive accommodation in which sediments can accumulate to considerable thickness.

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Presentation on theme: "Sedimentary Basins. Sedimentary basins – definition Large areas of positive accommodation in which sediments can accumulate to considerable thickness."— Presentation transcript:

1 Sedimentary Basins

2 Sedimentary basins – definition Large areas of positive accommodation in which sediments can accumulate to considerable thickness and be preserved for long geological time periods.

3 Basin classification – plate tectonics 1.Type of crust on which the basin rests 2.The position of the basin relative to plate margins 3.Where the basin lies close to a plate margin, the type of plate interaction occurring during sedimentation

4 Types of plate margins: 1.Convergent (subduction) 2.Divergent (rifts, mid-oceanic ridges) 3.Transform (offset mid-oceanic ridges)

5 Basin classification I.Intraplate basins (pre-rift) II.Divergent-margin basins (syn-rift) III.Intraplate basins (post-rift) IV.Convergent-margin basins V.Collision and post-collision basins VI.Strike-slip basins

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16 Economic potential of sedimentary basins Basin physiographyBasin physiography Sediment supplySediment supply Depositional environmentsDepositional environments Architecture of depositional systemsArchitecture of depositional systems Subsidence ratesSubsidence rates Burial depths and burial historyBurial depths and burial history Geothermal gradientsGeothermal gradients


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