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

Describe and explain how marine and sub aerial processes have formed the sequence of landforms at Stairhole, Lulworth Cove and Warbarrow bay.

Extracts from this document...

Introduction

Coastal Landforms Questions Describe and explain how marine and sub aerial processes have formed the sequence of landforms at Stairhole, Lulworth Cove and Warbarrow bay. Lulworth is a classic example of the various forms of coastal morphology. There are a diverse range of features created by both marine and sub aerial processes. The coast is a particularly diverse landscape as it is effected by nearly all types of weathering. Lulworth is particularly famous for four important features, Durdle door, Stairhole, Lulworth Cove and Warbarrow Bay. These three landforms can be viewed in a series of stages of erosion. However before we look at the process which have sculpted the coastline we must first analyse the rock type on which these processes have been working in order to fully comprehend what is happening. ...read more.

Middle

However behind the Purbeck and Portland softer Wealden Clay and Chalk can be found. The first feature in question Stairhole, has been created by a breach of the outer Portland limestone. This has created a series of notches and caves. Once these caves have been created a weakness is formed and so as with all matter concerning erosion it is exploited. The caves are enlarged and this leads to an arch been created as the base is removed. This is the process that has formed Durdle door. Arches eventually become stacks and there are removed completely. This breach increased the amount of hydraulic action created by the waves on the now exposed rock. ...read more.

Conclusion

Equally the rain does equal damage cutting channels through the soft clays. Slump and slides can clearly be seen visibly. It is this varied lithology with the softer, less erosion resistant rocks behind that can be accounted for features such as Lulworth Cove. A weakness has simply been exploited, this may have been because the Portland was very thin or contained a number of joints. These joints created by the folding of the limestone are then exploited. Lulworth cove is simply a weakness that has been exploited and enlarged. The same can be said about Worbarrow bay. The only difference been several bays have been created until they have been eroded into one. Once a bay has been created there is less erosion however. This is due to the headlands creating wave refraction and in doing so slowing the incoming waves. This in turn reduces hydraulic action. 1 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Rocks & Weathering 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 AS and A Level Rocks & Weathering essays

  1. Erosional Landforms on the Dorset Coastline

    The processes included in marine erosion are: * Abrasion- the process by which small rock particles transported within the waves scour the rock surfaces over which and against which they are carried. * Attrition- the process by which particles of rock carried by the sea are rounded by knocking into each other and reduced in size.

  2. How crude oil is formed.

    This only happens when geologists and geophysicists are absolutely certain that there is oil to be found. This is an example of drilling equipment. The drilling company sets this up on the site. Once all the equipment is set up, they begin the drilling using a drill bit to cut through the layers of rocks.

  1. glacial eroded landforms

    Britain is rich in these landforms which provide scenic value to areas like the Lake District. The glacial landforms not only bring tourists seeking scenic value to areas, but also provide a great opportunity for hill walkers, climbers, and skiers.

  2. I am trying to find out how footpath erosion on Pen Y Fan which ...

    My data interpretation shows that footpath erosion is more severe on the Pen Y Fan footpath because: *More people walk up it. *The footpath is wider. *The footpath has more stones while the surrounding area has only grass and soil and very little stones.

  1. Free essay

    Outline the major landforms associated with Periglacial landscapes and discuss their formation.

    This creates a problem as the warmer climate melts this snow and the dry snow that fell during the colder season is also melted creating slush. This slush is heavier and thicker than normal dry winter snow creating avalanche plunge pools and devastating avalanches again heavily affecting the topography of the land.

  2. 'I think that sedimentary stones will be more affected by weathering than igneous stones.' ...

    Results This scatter graph shows the average weathering grade over the age groups. I chose to make the groups span 30 years each because it seemed to give a decent amount of values per group without the group being too general.

  1. Find out why there is no Carboniferous Limestone visible around the Somerset area.

    is any other studies that have been done on the subject of no visible limestone in Somerset. The books will be used to find information about the recent quarrying activities and the present and past localities of GB in relation to the geology of the area that is being studied.

  2. Construct two Graphic Log Sections, one on the eastern exposure (ST 3375 6645) and ...

    Weathered tells us that the bed had been left exposed for a period of time. 3 Lime mud/clay, grey with red discolouration, very fine. Laminations, calcite veins, weathered shale. Very fine particle rock with laminations formed thin layers of sediment due to high/rapid current flow conditions. 4 Crystalline limestone, red.

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