Delta depositional environments: types, geometry, facies distribution, morphology, and stratigraphy of deltaic systems. Specifically, the importance of regression (progradation) for river deltas, the influence of waves and tides, hypopycnal, homopycnal, hyperpycnal, and turbidity flows and which flow type is most common in deltas, position relative to shelf edge, grain size and composition of sediment fed to the basin from the fluvial system, slope steepness and elongation, wave reworking, lobe abandonment and erosion during transgression (retrogradation) causing lobe migration (bird foot of Mississippi river delta example), upper delta plain, bayline (or tidal limit), lower delta plain, delta front, prodelta, and storm-wave overwriting of delta deposits.

References: Depositional Sedimentary Environments: [ Ссылка ]
Noel P. James and Robert W. Dalrymple. (2010). Facies models 4: [ Ссылка ]

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0:00 What are deltas?
1:35 Types of deltas /delta geometries
2:21 Facies distribution in deltaic systems
2:36 Inflow density (hyperpycnal, hypopycnal, & homopycnal)
3:59 Wave vs tide dominated deltas
4:52 Delta position relative to shelf basin effect on facies distribution
5:26 Sediment type/grain size distribution
6:39 Slope steepness effect on facies distribution
7:58 Wave reworking of deltaic sediment
8:36 Delta migration /lobe abandonment
10:52 Delta body parts labeled
11:49 Delta stratigraphy
13:31 Fluvial delta vs. wave delta stratigraphy
15:07 Recap of related depositional environments

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