Flashcards
geology
Cards in this deck (14)
- 1name a very resistant rockgranite
- 2name a weaker rockclay
- 3some rocks are well jointed which means sea can penetrate along lines of weakness and make them more vulnerable to erosion - give an example of a type of rocklimestone
- 4variation in the rates at which rocks wear away is known as what ?differential erosion
- 5what else about rocks effect erosion ?the structure and variation
- 6what is a CONCORDANT COASTLINEwhere the rock runs parallel to the coast - harder rock provides a protective barrier to erosion of softer rock
- 7what is a DISCORDANT COASTLINErocks run at right angles to coastline allowing the sea to penetrate along weaker rocks to produce large bays and headlands
- 8give an example of where in the uk has a discordant and concordant coastlinePurbeck - southern england
- 9in purbeck, on the southern part of the coast the rocks run parallel, here what is the resistant rock and what does it do ?Portland limestone that forms cliffs and these have protected the coast from erosion
- 10the sea has only broke through in a few places to the clay behind - these are ?worbarrow bay and lulworth cove
- 11where is the disconcordant part of the purbeck coastline and what are some of the bays and headlands it has formed called ?to the east
bays = swanage bay
headlands = the foreland - 12what type of coastline is thisconcordant in south and disconcordant in east
- 13dip of rock also important . the steepest cliffs tend to form in rocks that have a _____ strata or dip gently _______1. horizontal
2. inland - 14rocks that dip ____ the coast tend to produce more _____ sloping features1. towards the coast
2. gently
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- A level Geography - physical (coasts) Flashcards on geology, created by niamh bergin on 26/06/2017.
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- niamh bergin
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