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MICHIGAN BEACHES

MICHIGAN BEACHES. ventifacts. Rocks smoothed from wind erosion Angular Smooth on 1-2 sides. Formation of Dunes. Sand supply glaciers (MI) prevailing wind westerly blockade moraines (MI ). Michigan Dunes. Form on the EAST side of Of the Great Lakes. DUNE FORMATION. Pinery.

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MICHIGAN BEACHES

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  1. MICHIGAN BEACHES

  2. ventifacts • Rocks smoothed from wind erosion • Angular • Smooth on 1-2 sides

  3. Formation of Dunes • Sand supply • glaciers (MI) • prevailing wind • westerly • blockade • moraines (MI)

  4. Michigan Dunes • Form on the EAST side of Of the Great Lakes

  5. DUNE FORMATION

  6. Pinery

  7. Ludington

  8. Sleeping Bear

  9. Sleeping Bear Sand Dunes • Perched dune • On top of a moraine

  10. The Sleeping Bear

  11. Long ago, in the land that is today Wisconsin, Mother Bear and her two cubs were driven into Lake Michigan by a raging forest fire. The cubs swam strongly but the distance and the water proved too much for them. They fell further and further behind and ultimately slipped beneath the waves. When Mother Bear reached the Michigan shore, she climbed to the top of a bluff and peered back across the water, searching vainly for her cubs. The Great Spirit saw her and took pity on her plight. He raised North and South Manitou Islands to mark the place where her cubs vanished and laid a slumber upon Mother Bear.-Ojibway Indian Legend

  12. 1995 slide

  13. Silver Lake

  14. SILVER LAKE

  15. Dune Erosion • Due to • lack of plants/trees • human activity • bad weather

  16. Dune erosion • Which direction will this dune move? • How to stabilize this dune? windward leeward wind

  17. You can help protect the dunes by: staying on paths, not littering, by leaving plants and wildlife in place

  18. BARCHAN DUNES (overhead view)

  19. Dune sand • Abrasion • Creates “frosted grains” • angular • mainly quartz • hard • Plentiful

  20. Dune sand :angular pieces of…

  21. Sagutuck, MI

  22. Ogden Dunes. INLake MI 1986

  23. Lake Erie House

  24. Loess • Wind blown dust • Yellowish

  25. WAVE EROSION

  26. CAPE HATTERAS LIGHTHOUSE

  27. Lake Michigan

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