geology - linked to coastal processes Flashcards
what is lithology?
refers to the characteristics of rocks
who is lithology linked to erosion?
lithology can determine how resistant rocks are to erosion and their permiability
what rocks are more resistant to erosion?
granite and to a lesser extent chalk
what rock is very susceptible to erosion?
clay
why is limestone vulnerable to erosion?
it is well jointed meaning that the sea can penetrate at lines of weakness
what is differential erosion?
the variations in rates of erosion
what is a concordant coastline?
where rock runs parallel to the coastline
what is discordant coastline?
where rocks run perpendicular to the coastline
what is normally found concordant coastlines?
coves
such as lulworth cove
what is normally found as discordant coastlines/
bays
such as swing bay
what is the dip in rocks known as?
the angle in which rock strata is
which cliffs usually are the steepest?
the ones with horizontal strata or dip gently inland
which cliffs have the most gentle slope?
ones that dip towards the coast
