Eq2 Flashcards

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1
Q

Describe a Concordant coastline

A

occur where beds, or layers, of differing rock types are folded into ridges that run parallel to the coast. The outer hard rock (for example, granite) provides a protective barrier to erosion of the softer rocks

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2
Q

Describe a Discordant coastline

A

A discordant coastline occurs where bands of different rock type run perpendicular to the coast. The differing resistance to erosion leads to the formation of headlands and bays.

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3
Q

What are Joints

A

Small cracks in the layers if rock created during earth’s movements.

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4
Q

What is a Fault

A

A large crack in the rock caused by earthquake movements.

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5
Q

Examples of Soft rock

A

Clay and sands (erode quicker)

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6
Q

Examples of Hard rock

A

Limestone and chalk

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7
Q

What are headlands and bays

A

Headlands are formed when the sea attacks a section of coast with alternating bands of hard and soft rock.

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8
Q

How do caves form?

A

Caves occur when waves force their way into cracks in the cliff face. The water contains sand and other materials that grind away at the rock until the cracks become a cave. Hydraulic action is the predominant process.

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9
Q

How do caves form

A

waves force their way into cracks in the cliff face. The water contains sand and other materials that grind away at the rock until the cracks become a cave. Hydraulic action is the predominant process.

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