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Barrier Islands. Which of the following INCREASES as sediment becomes more mature? A.Grain size B.Angularity C.Sorting D.None of the above.

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Presentation on theme: "Barrier Islands. Which of the following INCREASES as sediment becomes more mature? A.Grain size B.Angularity C.Sorting D.None of the above."— Presentation transcript:

1 Barrier Islands

2 Which of the following INCREASES as sediment becomes more mature? A.Grain size B.Angularity C.Sorting D.None of the above

3 Which of the following is in the intertidal zone? A.Swish zone B.Swash zone C.Infiltraton zone D.Ripple zone

4 What is the main sediment transport mechanism in the supratidal zone? A.Wind B.Waves

5 A.Summer Profile B.Winter Profile

6 Barrier Island Systems Common along Passive Margins <100m to kms in width Sand is most common material Gravel common in glacial terranes

7

8 Cape Hatteras

9 Long-shore current: moves down beach as a result of waves coming into beach at an angle

10 Barrier Environments Beach –Dynamic part of barrier –Sediment moves in and out of beach with storms Barrier Interior –Frontal dune ridge, secondary dunes Landward Margin –Intertidal sand or mudflat –Overwash deposits

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12 Barrier Types Barrier Spits

13 Recurved Spit

14 Tombolo

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