Podcast
Questions and Answers
What is another name for the Pleistocene Epoch?
What is another name for the Pleistocene Epoch?
- Ice Age (correct)
- Bronze Age
- Iron Age
- Stone Age
What are erratics?
What are erratics?
- Large boulders, transported a long distance from their source (correct)
- Fossils of ancient organisms preserved in ice
- Small pebbles found near glaciers
- Smooth, polished rocks found in glacial till
What are the engraved marks left by moving glaciers called?
What are the engraved marks left by moving glaciers called?
- Grooves
- Indentations
- Scratches
- Striations (correct)
Where do end moraines form?
Where do end moraines form?
What does meltwater transport?
What does meltwater transport?
What lobe moved over Delano?
What lobe moved over Delano?
What could be another name for any lobe?
What could be another name for any lobe?
What color deposits did the Wadena lobe leave and where did they come from?
What color deposits did the Wadena lobe leave and where did they come from?
What is a 'driftless' area?
What is a 'driftless' area?
During what time period did Minnesota's sediment come?
During what time period did Minnesota's sediment come?
How big was Lake Agassiz compared to the current Great Lakes?
How big was Lake Agassiz compared to the current Great Lakes?
What did the draining water from Lake Agassiz form?
What did the draining water from Lake Agassiz form?
What are three beautiful features of Minnesota that can be attributed to glaciers?
What are three beautiful features of Minnesota that can be attributed to glaciers?
What lobe is considered the most recent?
What lobe is considered the most recent?
What types of weather help glaciers move?
What types of weather help glaciers move?
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Study Notes
Glacial Features and Movement
- The Pleistocene Epoch is also known as the Ice Age.
- Erratics are rocks carried by glaciers from one location and deposited in another.
Glacial Marks and Moraines
- Engraved marks left by moving glaciers are called striations.
- End moraines form at the point where the glacier stops moving.
Glacial Lobes and Deposits
- The Wadena lobe moved over Delano.
- Any lobe can be referred to as a glacier tongue.
- The Wadena lobe left red deposits, which originated from the Red River Valley.
Glacial History in Minnesota
- Minnesota's sediment came from the Pleistocene Epoch, also known as the Ice Age.
- Lake Agassiz was larger than the current Great Lakes combined.
- The draining water from Lake Agassiz formed the Mississippi River and the Gulf of Mexico.
Glacial Features in Minnesota
- Three beautiful features of Minnesota attributed to glaciers are the state's many lakes, rolling hills, and fertile soil.
- The Des Moines lobe is considered the most recent glacial lobe.
Glacial Movement
- Glaciers move with the help of warm and wet weather.
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