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White Rock is made of white sandstone. This sort of sandstone is a clastic sedimentary rocks (rocks that formed that has formed from sediment deposited by water or air, which is made up of fragments of other minerals and rocks).
The formation of sandstone involves two main stages. First, a layer of sand is deposited on the existing grown (normally at the bottom of a stream, lake or sea) - this happens as the water is no longer able to hold the material. After the sand has been a amassed, the sand becomes sandstone when it is compacted by the pressure of deposits which are overlayed on top of the sand. The cementing happens by the precipitation of minerals within the pore spaces between sand grains.
The process of erosion caused the rock to look the way it does today. Being quite high and exposed, it is constantly being hit by flows of wind and water. These take tiny particles off the rock each time and carry them away to be deposited else where.
If you take a walk around you will notice there are certain plants that are covering the rock face and these will be reducing the erosion occuring in those locations.
Questions
1. Taking a close look at the sandstone, describe what a layer of sandstone looks like?
2. From looking at the outcrop, what signs of erosion can you see?
3. What is the types of vegetation that are protecting the sandstone from erosion?