How was carboniferous limestone formed?

How was carboniferous limestone formed?

Formed from the remains of organic matter, usually seashells and plants. It was formed under the sea 220-280 million years ago. Carboniferous limestone is an example of a pervious rock, as it allows water to flow through the joints and bedding planes. The main processes, which affect it, are carbonation and solution.

How are limestone pavements formed BBC Bitesize?

Rainwater is a weak carbonic acid which reacts with the limestone dissolving the stone, enlarging joints and bedding planes. This leaves exposed blocks of limestone called clints and the resulting pattern of blocky rock is called a limestone pavement, eg Malham Cove.

How is limestone formed ks3?

The geological formation of carboniferous limestone rock is illustrated. Fossil formation is mentioned but not shown. An animation shows the build up of layers of calcite (from marine organisms) combined with silt and sand which together form a grey, hard rock called limestone.

How are limestone features formed?

Limestone is a sedimentary rock which is formed underwater. Some limestone consists mainly of coral or the shells of other small marine creatures. This means that water can enter limestone through pores, joints or cracks in the rock. Another characteristic of limestone is that it can be slowly dissolved by water.

How is upland limestone used in the UK?

Upland limestone produces distinctive features which can be used for industry, farming, recreation and tourism. Land use conflicts can often arise and solutions must deal with these conflicts. Below is a location map of upland limestone landscapes in the UK.

What are the reactions in the limestone cycle?

calcium hydroxide + carbon dioxide → calcium carbonate + water Ca(OH) 2 (aq) + CO 2 (g) → CaCO 3 (s) + H 2 O(l) All of these reactions are linked together and form the limestone cycle .

How does water get to the surface of limestone?

However, this water disappears from the surface, either by seeping through joints in the limestone or as streams disappearing down through swallow holes. It is the action of water which is responsible for many of the distinctive features of upland limestone scenery.

How are caverns formed in Carboniferous limestone landscapes?

Land use conflicts can often arise and solutions must deal with these conflicts. Large caverns can form underground in carboniferous limestone landscapes; they form when chemical solution is more active. They can also be enlarged by the usual processes of river erosion – hydraulic action, corrosion and corrasion.