Glacial Deposition and Landforms Created Flashcards

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Note: We may include questions that have multiple correct answers. It’s useful to remember specific examples to understand these concepts better.

What is glacial till?

Glacial till is the mixture of rocks, sand and clay that glaciers carry along as they move.

When the ice melts, it deposits this till, forming unique features on the landscape.

What are erratics?

Erratics are large boulders transported and deposited by glaciers in areas different from their origin.

They stand out from the surrounding rocks due to their different composition and indicate areas once covered by ice.

What are drumlins?

Drumlins are elongated hills formed by glacial moraine. They have a teardrop shape with a gentle slope on the up-ice side and a steeper slope on the down-ice side. Drumlins often appear in clusters.

How do erratics provide clues about glacial movement?

Erratics provide clues about glacial movement by showing where glaciers have transported boulders from different areas. Their distinct composition compared to local rocks helps trace the glacier’s path.

What information can drumlins give us about past glaciers?

Drumlins can provide information about the direction of past glacial movements. Their formation and arrangement indicate the flow direction of the glacier that created them.

How are drumlins typically arranged in the landscape?

Drumlins are often arranged in clusters or swarms. This arrangement provides clues about the movement and behaviour of the glacier that formed them.

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