2.2 - Geological Structure Influence

Question 1

When are joints formed?

Answer 1

Sedimentary: as sedimentary rock forms under pressure

Igneous/metamorphic: when they cool

Question 2

How can a seaward dip be recognised?

Answer 2

If the bottom part of the cliff sticks out to sea

Question 3

How can a landward dip be recognised?

Answer 3

If the top is overhanging and sticking out to sea

Question 4

What type of cliffs do seaward dips produce?

Answer 4

Gentler but less stable once’s

Loose material can slide down bedding planes due to gravity in mass movement and bedding planes tilted towards the sea

Question 5

What type of cliffs do landward dip beds produce?

Answer 5

Stable and steeper ones
Less mass movement as slopes of bedding plane are towards the land not the sea
Weathering and erosion may attack bedding planes and joints