East Yorkshire Coastline: Geology and Erosion
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East Yorkshire Coastline: Geology and Erosion

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@GuiltlessErhu

Questions and Answers

What is the main geological composition of the Holderness coastline?

Boulder clay

Approximately how much has the coastline eroded since Roman times?

4km

What is the purpose of the groynes in Hornsea?

To reduce longshore drift

Why was the area around the Easington gas terminal protected?

<p>To protect the gas terminal</p> Signup and view all the answers

What is the name of the process that weakens the cliff face in Flamborough Head?

<p>Hydraulic action</p> Signup and view all the answers

What is the consequence of the terminal groyne effect in Hornsea?

<p>Accelerated erosion</p> Signup and view all the answers

The Holderness coastline extends 61km from ______ Head in the North to ______ Head in the South.

<p>Flamborough; Spurn</p> Signup and view all the answers

The coastline has eroded about ______ km since Roman times and retreats around 1-2 metres per year.

<p>4</p> Signup and view all the answers

The area around the ______ gas terminal was protected due to its importance in supplying gas from the North sea.

<p>Easington</p> Signup and view all the answers

The beach in Hornsea is important as it attracts ______ and brings in revenue to the town.

<p>tourists</p> Signup and view all the answers

The ______ rock is more resistant to erosion, leaving the clay to erode and form a headland.

<p>chalk</p> Signup and view all the answers

The ______ mud at Barmston dries up and erodes quickly, leaving a wave-cut notch.

<p>mud</p> Signup and view all the answers

Study Notes

The Holderness Coastline

  • The Holderness Coastline in East Yorkshire stretches 61km from Flamborough Head in the north to Spurn Head in the south.
  • The coastline's geology is composed of boulder clay, chalk, and alluvium, which contributes to its rapid erosion.

Geology of the Coastline

  • The main rock of the coastline is boulder clay, deposited after the ice age as the glaciers melted with the material they had picked up off the sea bed.
  • The coastline has eroded about 4km since Roman times, retreating around 1-2 meters per year.
  • Flamborough Head is made of white chalk.

Key Locations

  • Flamborough Head: composed of resistant white chalk, eroded to leave a headland due to hydraulic action, bedding planes, and joints.
  • Barmston: area of weak cliff due to mud and dried sediment, prone to erosion, with a failed attempt to protect the caravan park using boulders.
  • Hornsea: a tourist town relying on income from tourism, with multiple caravan parks, golf clubs, arcades, and a promenade.
  • Hornsea's Protection Methods: includes sea wall, rock armor/riprap, and groynes to reduce longshore drift.
  • Hornsea's Beach: crucial for tourism, but threatened by terminal groyne effect and erosion, which accelerates erosion further down the coast.
  • Easington Gas Terminal: a small village protected due to the strategic importance of the gas terminal, which supplies gas from the North Sea.
  • Spurn Head: a salt marsh area to the west, serving as a bird habitat, with a lifeguard station, lighthouse, and small settlement, but with abandoned defenses.

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Description

Explore the 61km stretch of the Holderness Coastline in East Yorkshire, from Flamborough Head to Spurn Head. Learn about the geological composition of the coastline, its rapid erosion, and the reasons behind it. Discover how much it has retreated over time.

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