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Sedimentary Geology Geos 240 – Chapter 8 Depositional Environments Part 2 Barrier Islands & Deltas

Sedimentary Geology Geos 240 – Chapter 8 Depositional Environments Part 2 Barrier Islands & Deltas. Dr. Tark Hamilton Readings from Sediments & Basins: (8:1-67) Camosun College. See Notes. Ravinement: Transgressive Facies Progression. Erosion > Deposition ~10m. Barrier Island/Cay. L1, L2.

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Sedimentary Geology Geos 240 – Chapter 8 Depositional Environments Part 2 Barrier Islands & Deltas

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  1. Sedimentary GeologyGeos 240 – Chapter 8Depositional EnvironmentsPart 2Barrier Islands & Deltas Dr. Tark Hamilton Readings from Sediments & Basins: (8:1-67) Camosun College

  2. See Notes

  3. Ravinement: Transgressive Facies Progression Erosion > Deposition ~10m Barrier Island/Cay L1, L2 Contemporaneous Facies S1, S2 See Notes

  4. Effects of Hurricane Carla1964 onGalveston IslandMudMarshSand

  5. River Dominated Delta, Mississippi Typical of Forced Regression Low Latitudes Low Tidal Ranges

  6. Processes & Classification of Deltas

  7. Processes & Classification of Deltas

  8. Avusion Nodes & Distributary Switching This is a perspective drawing. The blue lines are all on one plane at sea level, as is the green profile of the seaward edge of the delta. The grade (gray) is a gradual decline in a perpendicular plane above the central blue dashed line. A-C is the shortest & steepest path to the coast & SL. See Notes

  9. Small Distributary Deltas, Mississippi Historic Development:: C) 1838, D) 1862, E) 1871, F) 1891

  10. Mouth Bars:River Dominates Waves

  11. Shoestring Sand FaciesAtDistributaryMouths

  12. Prograding Delta Environments Topset, Flat Sands Foreset, Clinoform Silts Bottomset, Flat Clays

  13. The End: Chapter 8-Part 2!

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