Question

You will be asked to give examples of the 3 types of Isostatic Rebound, Sediment Deposition, or Erosion that has impacted the waterways or landscapes throughout Michigan and its Great Lakes boundaries. Your 3 examples can be based one of the three types or a mix of any of the three types, it is your choice.

Answer 1

Isostatic rebound occurs when a load is imposed on or removed from the lithosphere. The surface tends to rise or sink as the lithosphere rises or sinks in the asthenosphere. Loads may consist of large lakes, oceans (on continental shelves during eustatic sea level rise), ice, sediment, thrust sheets, and volcanoes.

Deposition is the geological process in which sediments, soil and rocks are added to a landform or land mass. Wind, ice, water, and gravity transport previously weathered surface material, which, at the loss of enough kinetic energy in the fluid, is deposited, building up layers of sediment.