Folding and Faulting

Question 1

How folding occurs

Answer 1

◍ two continental plates collide
◍ compression/orogeny
◍ fold mountains created w. anticlines,synclines and limbs

Question 2

4 types of folds

Answer 2

◍ simple fold
◍ asymmetrical fold
◍ overfold
◍ overthrust

Question 3

orogeny

Answer 3

◍ movement of tectonic plates causes plates to buckle upwards
◍ forms fold mountains

Question 4

-Caledonian orogeny

Answer 4

◍ 400 MYA
◍ ‘wicklow mountain
◍ american and eurasian plate collided
◍ SW-NE trend
◍ Fault lines

Question 5

Amorican orogeny

Answer 5

◍ Ridge and valley munster
◍ 250 MYA
◍ E-W trend

Question 6

Alpine orogeny

Answer 6

◍ 30 MYA
◍ The Alps
◍ African and indian plates collided

Question 7

Faults

Answer 7

◍ Stress causes the crust to push together and form faults
◍ Moving fracture/break in earth’s surface created by tention in rock layers

Question 8

5 Types of faults

Answer 8

◍ normal
◍ reverse
◍ transverse
◍ graben
◍ horst

Question 9

scarp

Answer 9

◍ steep exposed slope
◍ formed by a normal fault

Question 10

rift valley/graben

Answer 10

◍ formed when faults pull away from eachother

Question 11

Block mountain/horst

Answer 11

◍ formed when faults move toward each other
◍ ben bulben

Question 12

Reverse fault

Answer 12

◍ formed by compression
◍ crust pushes together

Question 13

thrust fault

Answer 13

◍ low angle
◍ layers of rock appear horizontal to one another

Question 14

transform fault

Answer 14

◍ formed when crust moves adjacent to itself