• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

The impact of structure and lithology on coastal landforms

Extracts from this document...

Introduction

Luke Tyler The impact of structure and lithology on coastal landforms "Use examples to explain how the combined impacts of structure and lithology affect coastal landforms" With a combination of both structure and lithology, the coastal landforms are easily affected. Both structure and lithology affect: - The coastline in plan - The coastline in profile and - The distribution of micro features The coastline in plan The coastline in plan is mainly determined by structure. It determines the coastal pattern of headlands, bays, islands and inlets found along the coast. These are formed by differential erosion which means the sea waves erode softer rock quicker than the harder and in time the softer rock is worn away forming gaps in the coastline as we understand and call coves or bays (Lulworth cove). ...read more.

Middle

The main cause of differentiations of cliff profiles are mainly down to the fact that certain cliffs erode slower due to the rock types they consist of. The rock types can affect the rate in which the cliff erodes and so can many other factors including: - Salt weathering - Mechanical wave erosion aided by abrasion (pebbles) - Bio erosion by boring organisms - Chemical weathering - The type of wave reaching the shore Hard rocks such as granite will erode at a slower rate than soft rocks and the result of this erosion is that it produces high steep cliffs whereas softer rocks such as boulder clay will erode quickly due to weathering etc and will cause cliff to collapse causing gentle or less steep cliff faces. ...read more.

Conclusion

Blowholes and vertical shafts can develop and the pressure inside these cause a high pressure which result in tiny cracks forming which can be exploited by the sea and air and eventually contribute to erosion. Analysis Although we spend millions of pounds in the UK developing and constructing sea defence schemes, many are unsuccessful. Coastal erosion is happening all the time around the world and by constructing defence schemes are not always the ideal solution. Although it may protect one area, it will only cause further problems along the coast. If we leave the sea to do what nature does, then it will deposit the rocks and sand etc at another location through longshore drift and although one area loses land, another gains. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Physical Geography section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Physical Geography essays

  1. Cliff erosion in East Sussex - the processes, problems and solutions.

    Most undefended frontages in Lewes District comprise undeveloped open cliff tops, as at Seaford Head and between Peacehaven and Newhaven." "Action to reduce or manage coastal erosion risks 3.17 The District Council is a partner in the Regional Monitoring Programme for the coast between Selsey Bill and Beachy Head, and

  2. Geography- Whistable Coast Project

    * Have better equipment- this would have made our results more accurate for example while measuring the groyne using a laser tape measure would have given a more accurate result. Evaluation In this project on coastal processes the hypothesis was 'Does Long shore drift exist on the Whistable coast'.

  1. Bournemouth vs barton on sea coastal defence management

    As it breaks, the wave crashes into the sandand claws back beach sediment. Coastal management Groynes Groynes are wooden, concrete and/or rock barriers or walls at right angles to the sea. Beach material builds up on the updrift side, where Longshore drift is predominately in one direction, creating a wider

  2. The structure of the Earth and the impact of volcanic eruptions.

    57 people were killed. Primary impacts: * Many Lahars (mud slides) - roads, railways and bridges were destroyed. * It had a grey core, hence an explosive lateral blast. * A lot of ash and pumice was expelled from the volcano.

  1. Is porlock bay affected by longshore drift?

    Due to the geology at Porlock bay the resistant rock, red marl, is eroded quicker than the non resistant rock which is quartzite. The headland has faults and cracks due to coastal erosion occurring at all times. The crack become big and is eroded to form a cave due to hydraulic action, attrition and abrasion.

  2. THE COASTAL POLICY IN TURKEY

    All coasts are under the power and rule of the state according to Article 43 of the Constitution. The same constitutional article recognises priority public interests for benefiting from the shores of the seas; lakes and rivers as well as sea and lake coastal zones and the conditions and possibilities of benefiting from these places are regulated by legislation.

  1. Should the coast between Overstrand and Sheringham be protected at any cost, or should ...

    Modern sea walls have a slope and curved top, which breaks up the energy of the wave and prevents water going over the top of the wall during heavy storms. Sea walls are very expensive (�2000-�5000 per metre) however they do last between 20- 30 years.

  2. Describing an Ideal Island

    The economy is also stable at this time and manufactured goods are produced to export. Major types of transportation in this country are highway, railroad, and by air/plane. PEOPLE / CULTURE The population of Island is approximately 2,010,005 people.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work