Evaluate the view that rates of coastal recession are largely controlled by geological factors20 paragraph 1 Flashcards

1
Q

What is coastal recession?

A

The net loss or displacement of land, or the long-term removal of sediment and rocks along the coastline due to the action of waves, currents, tides, wind-driven water, or other impacts of storms

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2
Q

Where is an example of limited and slow costal recession due to rock type?

A

Kettlness, N. Yorkshire

where a headland made from erosive resistant rock forms the end of a bay, removing wave energy going into the bay

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3
Q

Where is an example of extensive and fast coastal recession due to rock type?

A

Holderness coastline looses 7-10cm per year due to being mad of low erosive resistant boulder clay and chalk.

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4
Q

Rock Type and Lithology

Advantages for idea Hard Rock

A

Coasts made of hard rock (e.g., granite, basalt) erode much more slowly due to their resistance to physical and chemical weathering.

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5
Q

Rock Type and Lithology

Advantages for idea soft Rock

A

Coasts made of soft rock (e.g., clay, sandstone) erode quickly due to their susceptibility to weathering and wave action

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6
Q

Bedding Planes and Joints

advantage of Bedding Planes and Joints s

A

The presence of joints, faults, and bedding planes in rocks can make them more susceptible to erosion

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7
Q

Disadvantages

A

This factor can vary significantly even within small geographic areas, making it hard to generalize.

Human activities such as coastal defenses can significantly alter natural erosion rates regardless of rock type.

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