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

Pre-modern causes of erosion theories.

Extracts from this document...


Erosion of the Sphinx The Sphinx was created by carving it from a single block of bedrock limestone measuring at 73 meters long by 20 meters high. The dates to witch archeologists determine the age of the monument to be is a mystery. Some suggest that the sphinx was crafted in the 4th dynasty while others think it was under repair during that time. It is even suggested that the sphinx was created before human kind walked the earth. The date that the sphinx was sculpted plays a very large role to determine the types of erosion to occur on the sphinx. This is due to the fact that different periods of time, different climates existed. This difference in humidity and temperature could lead to an increase in either mechanical or chemical weathering or any one particular type of weathering to take place. ...read more.


* To erode two feet deep channels into the body of the Sphinx, and the walls of the quarry pit, in the span of five hundred years seems unlikely. * For this water to all of a sudden rise to this high level and never again seems unlikely. * The other buildings around the area were not effected by this capillary action * The Temple of Khafra is 46 meters above the Giza plateau but has similar appearances of erosion. Water erosion: The theory that the sphinx had been eroded by water was suggested due to the features of the outer layer of the sphinx. The buildings around the sphinx e.g. the temples showed that the outer rock was worn badly and "sagging." Deep fissures could also be found in the heavily rounded rock. The cause for this erosion by water is suggested to be due to the flooding of that period between 10,000 to 5000BCE. ...read more.


Other archeologists believe that due to the Sphinx being located in a hollow and that it has mainly been covered in sand for the most part of its life; this actually protected other forms of erosion as this built up as a protective layer. Modern causes of erosion. Pollution: Pollution never really existed until the 20th centenary and since the start of the 20th century has rapidly increased. Limestone reacts with acid rain causing it to erode very rapidly (in geology terms). Acid rain is caused by pollution, more specifically carbon monoxide mixing with the clouds in the air. Carbon monoxide is emitted in the burning of fossil fuels such as oil and coal. Automobiles are the greatest contributor to the emission of carbon monoxide into the atmosphere causing acid ran to fall. The most common way to reduce carbon monoxide emission into the air from automobiles is by attaching a catalytic converted into the exhaust funnel in a car. ...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. The aim of this report is to define the geological evolution of the area ...

    Within the lower plane ice has also played a significant factor in the shaping of the landscape.

  2. glacial eroded landforms

    River terraces provide areas of raised flat ground free of flooding, where settlements can develop and get access to the river. For example the many settlements along the River Thames.

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

    of the 100 squares were filled with grass, vegetation, soil or stones. This information helps me answer the main question because with this information in graphs, like the footpath transect it is a lot easier to compare the depth of them.

  2. Determining the paleoenviroment and tectonic history of a small area (Cocklawburn Beach)

    It has silt-sized particles and is clay. The only feature shown by this bed is lamination; there were no visible fossils or any of features in this bed. Bed 12: This bed has a thickness of 2 metres. It is composed of medium sand grained particles and is sandstone.

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

    For this I used both the internet and also a number of textbooks (please see my bibliography) - Rock grading: I graded the rocks mainly by eye, using my rock grading scheme to help me identify the characteristics of each rock.

  2. Investigate the relationship between the solid geology and the physical landscape from Ingleton to ...

    To the north of Manor Bridge, a cave marks the line of the North Craven Fault. This is location three and here, the Carboniferous Great Scar Limestone dips to the north at a gentle angle of 5� and is observed to the left of the cave.

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

    The conditions in this part of Britain were there were large rivers coming down from the north carrying as lot of sediment. Because of the latitude, that Britain was experiencing at the time, there was many iron ore in the sediment and sand as well.

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

    The minerals eg calcite or quartz are derived from fluids and are deposited in faults or fractures. 18 Basalt, dark in colour. Pillow lavas Pillow lavas formed underneath the surface of water and near a volcano where magma is produced.

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