Lithology and vegetation

Question 1

What is bedrock lithology?

Answer 1

existence of metamorphic sedimentary and igneous rock that affects rate if erosion recession on a coastline

Question 2

What is a igneous rock?

Answer 2

formed from crystallisation of a magma
resistant to erosion + weathering
crystals inc strength of rocks

Question 3

What is a sedimentary rock?

Answer 3

formed from build up of compacting/hardening of sediments into layers over time
formed over a shorter geological scale- more susceptible to erosion

Question 4

What is a metamorphic rock?

Answer 4

formed by change in structure of sedimentary +igneous rocks
caused by variations of heat and pressure
resistant to erosion

Question 5

What are sand dunes?

Answer 5

continuous supply of sand

powerful winds transport sand and obstacles trap sand (plants)

Question 6

Explain the two types of plants?

Answer 6

Xerophytes- withstand periods of dry weather

Halophytes-withstand high concentrations of salt from sea water

Question 7

Explain how colonise works

Answer 7

embryo and foredunes= sea rocket and sea crouch

deep roots tolerate high concentrations of salt

Question 8

What are yellow dunes?

Answer 8

marram grass, long deep roots salt tolerant

Question 9

What are heathers?

Answer 9

grey dunes, higher rates of humus