An unofficial nickname for the state of Minnesota is the Land of 10,000 Lakes. This is because the state has been covered by glaciers several times. Left behind were the lakes along with the deposition of boulders, rocks, pebbles, and sediment that were carried by the glacier. What are these areas of deposition called?

a. moraines
b. deltas
c. atolls
d. striations

a. moraines

The areas of deposition left behind by glaciers are called moraines. Moraines are accumulations of rocks, boulders, sand, and clay that are deposited by a glacier as it moves and melts. They can form along the sides, front, or at the terminus of a glacier. Moraines are common features in areas that have been affected by glaciation, such as Minnesota, and they can help geologists understand the history and movement of glaciers in the past.

The correct answer is a. moraines.