The spit has continued to join to the Isle of Portland. Chemical weathering and erosion are gradually wearing down these down. An arch at the end of the headland has collpased to form a stack called Old Harry and a stump called Old Harry’s Wife. They trap material being transported by longshore drift to create larger beaches which can then absorb wave energy to reduce erosion rates. It has been created by longshore drift.
The Foreland, Old Harry and his Wife: The areas where the soft rock has eroded away, next to the headland, are called bays. It has been created by longshore drift. How do climate and geolgy influence geomorphic processes? Sediment has been deposited over time to form a spit.
However, this creates a strong backwash which removes sediment from the beach and can lead to erosion under the wall. Coastal management strategies are being used along the Dorset coastline to prevent erosion in some areas but they have impacted the landscape and caused gcee to the natural environment. At the back of the cove is a band of more resistant chalk, so erosion is slower here. The spit has continued to join to the Isle of Portland.
Biological weathering caused by the vegetation on the top of the headland is swanaage breaking up the rock.
Coastal Case Studies – Mindmap in GCSE Geography
Behind the limestone is a layer of clay which casr softer so more easily eroded. Over time Old Harry will collapse to form a stump.
Erosion is the dominant process in the bay with the beach losing material year on year. This means waves are slowed, reducing erosion and will help to protect proprties and cliffs. Longshore drift affects the bay carrying material mainly gravel from the south saanage the north of the beach.
The areas where the soft rock has eroded away, next to the headland, are called bays.
They trap material being transported by longshore drift to create larger beaches which can then absorb wave energy to reduce erosion rates. Chemical weathering and erosion are gradually wearing down these down. Dorsert is located on the southern coast of the UK. As areas of the Dorset coast are being eroded, properities and infrastructure are at risk.
A concordant coastline has the same type of rock swanabe its length.
The headland juts out into the sea, so it is more vulnerable to high-energy waves. The limestone cliffs forming the back wall of the cove are vulnerable to mass movement and sometimes experience small slides sawnage slumps.
Coastal Case Studies
An arch at the end of the headland has collpased to form a stack called Old Harry and a stump called Old Harry’s Wife. Because there’s no erosion, there is no material to replenish the beach meaning the beach level will become lower. Dorset is located in the south of England.
How are geomorphic processes creating coastal landforms?
Dorset – case study of a UK coastal landscape
The alternating bands of hard and soft rock run parallel to the coast. The bands of soft rock erode more quickly than those of the more resistant hard rock leaving a section of land jutting out into the sea, called a headland.
Concrete sea walls are in place along most of Swanage beach. Sea wall Concrete sea walls are in place along swajage of Swanage beach. It connects the Isle of Portland to the mainland. Behind the spit there is The Fleet, a lagoon.
This caused the formation of Old Harry, a stack. Coastlines where the geology alternates between bands of hard and soft rock which are perpendicular to the shore are called discordant coastlines. Elsewhere, the cliffs are not covered by vegetation, so wet weather weakens them causing slumps. Its coastline has examples of many erosional and depositional landforms.
An Examination of the coast line in the Swanage Area. – GCSE Geography – Marked by
Groynes are wooden or stone barries which are built at right angles to the coast. The arch is gradually being worn away by mechanical, chemical and biological weathering.
They reflect waves back out to sea preventing erosion of the cliff. Casse the northern end of the bay the cliffs are covered in vegetation, stablising them and protecting them from erosion.