Rates of erosion

Question 1

What is Bedrock lithology?

Answer 1

Existence of sedimentary, igneous and metamorphic rock which affects the rate of recession along a coastline

Question 2

What is a igneous rock?

Answer 2

Rock formed by crystallisation of magma
more resistant to erosion and weathering
Crystals increase strength of rocks reduce lines of weaknesses

Question 3

What is a sedimentary rock?

Answer 3

rock formed by the build up of compacting and hardening of sediments into layers over time
formed over a shorter geological time- more susceptible to erosion

Question 4

What is a metamorphic rock?

Answer 4

Rock formed by change in structure of sedimentary and igneous rock
Caused by variations of heat and pressure
Metamorphised
More resistant to erosion