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

Limestone and it history

Extracts from this document...

Introduction

Limestone The formation of limestone Lime stone is a sedimentary rock made of dead animal shells formed deep down in the ocean; limestone also contains a large amount of calcium carbonate. Carboniferous limestone is a different type of limestone. It was formed around 350,000,000 years ago as a marine deposit in a warm, clear, shallow sea. The rock is well bedded and jointed. The cracks that separate the beds are called bedding planes and those that run down through the rock are called joints. Chalk is also a type of soft porous white limestone. Chalk is found mostly in England, a good example of this is the white cliffs of Dover or the motorway cutting at Blue Bell Hill, in Kent. ...read more.

Middle

The surface of the pavement is an exposed bedding plane and the exposed joints become widened, to form grykes, the blocks of limestone that remain between the grykes are called clints. Acidic rainwater will collect in the clint which will widen and deepen it. Caves/swallow holes: these are formed by melt water eroding a weakness in the limestone Uses of limestone * Lime stone can be heated with clay to make cement, it can then be mixed sand, water and crushed rock to make cconcrete. * Limestone can be heated which makes quicklime, if you the add water you will make slaked lime which can be used to neutralise excess acidity in lakes and soils. ...read more.

Conclusion

Melt water produced a waterfall that cut back the cliff, the erosion took place mainly at the lip of the fall which is why there's a curve in the cliff. After the last ice age the waterfall stopped because the water seeped down into the cracks and fissures, and therefore the water level never rises enough to produce a waterfall again. The cove has distinct vertical ledges, which are a result from variations in the hardness of the limestone layers. Dark vertical stripes are created on the cliff by lichens and mosses as water seeps down the face of the rock. The surface of the cove has a limestone pavement which has deep fissures as a result of chemical weathering, which is mainly acidic rain. The rain seeps down into the cracks and attacks the limestone causing the formation of Clints and grykes. ...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. Determining the paleoenviroment and tectonic history of a small area (Cocklawburn Beach)

    because the bottom of the bed is below the beach and cannot be seen. It is composed of limestone with a shale layer about halfway up the visible area, however this layer is not discernable enough to count as a separate bed.

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

    - There is also the question of shelter, because in the graveyard some stones are protected from weathering by ivy, trees, or even the church itself. This shelter can both help and hinder weathering. Rock Identification Table: Does the rock contain many different size and color minerals?

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

    In the hot, dry climate, desert sandstones and evaporites were deposited. The continental Permo-Triassic is sometimes known as the New Red Sandstone. At this time, almost the entire of Great Britain was covered in the land due to the high rates of evaporation.

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

    They are indicative of shallow water sedimentation and vigorous currents. 7 Limestone, fine grained, light grey to buff. Symmetrical ripples, bioturbation and lamination. Symmetrical ripples in the limestone are formed by two directional current movement over sediment causing sediments to move to and fro creating ridges.

  1. The aim of this piece of coursework is to investigate the impact of tourism, ...

    The theory that many geographers favour is the one that occurred at the end of the last ice age. At this time the temperatures would have been extremely low. This would have caused the water that filled up the cracks in the rocks to freeze, which meant that the limestone was no longer pervious, but impermeable.

  2. In this Essay I will inform you of the social, economic and environmental advantages/ ...

    quicklime which reacts fast with the excess acids to produce calcium salts that have a pH of 7. Without using this it inevitably leaves the farmer with no food, no fertile land , no fish and no money, and us humans and animals starving to death with no food either.

  1. How limestone formed.

    Or, if you use weak acid (like in this picture), the acid will start to fizz like crazy! If your rock is made of dolomite, the bare rock won't make bubbles. However, if you scratch a dolomite rock into powder, the powder will make bubbles in vinegar or acid.

  2. Compare and Contrast the Weathering Found in an Area of Limestone Country with that ...

    This matter produces humic acids as it decomposes that are considered important in promoting carbonation because the weathering of rock under soil appears more active than where bare rock is exposed. In Ingleborough in the Yorkshire Dales National Park, there are many specific limestone features.

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