How do submerging and emergent coastlines form Flashcards

1
Q

Submergent coastlines formation

A

These form when old glacial valleys that have since been submerged e.g fjords in Norway

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2
Q

Emergent coastlines formation

A

These occur when land rises over thousands of years and can cause raised beaches such as in Scotland

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3
Q

What are the three main types of rocks?

A

Igneous, sedimentary, metamorphic

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4
Q

What are examples of igneous rocks?

A

Granite, diorite, basalt

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5
Q

What is a characteristic of igneous rocks?

A

Crystalline, resistant, impermeable

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6
Q

What are examples of sedimentary rocks?

A

Limestone, chalk, sandstone, shale

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7
Q

How are sedimentary rocks formed?

A

From sediment accumulation and compaction

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8
Q

What is a characteristic of jointed sedimentary rocks?

A

Permeable

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9
Q

What makes chalk a unique sedimentary rock?

A

Has air spaces between particles

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10
Q

What is a characteristic of shale?

A

Fine and compacted, making it impermeable

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11
Q

What are examples of metamorphic rocks?

A

Marble, schist, slate

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12
Q

What is a characteristic of metamorphic rocks?

A

Very hard, resistant, impermeable

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13
Q

What are unconsolidated materials?

A

Loose and easily displaced materials

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14
Q

What happens to unconsolidated materials when compacted?

A

Particles can stick together and form an impermeable layer

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15
Q

Fill in the blank: Igneous rocks are _______.

A

crystalline, resistant, impermeable

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16
Q

True or False: Metamorphic rocks are typically softer than sedimentary rocks.

A

False

17
Q

What is lithology?

A

The study of the physical and chemical characteristics of rocks.

18
Q

What are the characteristics of crystalline rocks?

A

Resistant and impermeable.

19
Q

Give examples of igneous rocks.

A
  • Granite
  • Basalt
  • Dolerite
20
Q

What type of rocks are schist and slate?

A

Metamorphic.

21
Q

What are the characteristics of metamorphic rocks?

A

Very hard and resistant, impermeable.

22
Q

What is the typical recession rate for impermeable rocks?

A

Approximately 1 cm/year.

23
Q

What are examples of sedimentary rocks?

A
  • Sandstone
  • Limestone
  • Shale
  • Chalk
24
Q

What is the recession rate for sedimentary rocks?

A

Approximately 1-10 mm/year.

25
Q

What is the difference between discordant and concordant coastlines?

A
  • Discordant: Layers of rock arranged perpendicular to the coastline.
  • Concordant: Layers of rock arranged parallel to the coastline.
26
Q

What is an example of a discordant coastline?

A

Jurassic coastline in Dorset.

27
Q

Fill in the blank: ______ are permeable rocks.

A

Sandstone

28
Q

Fill in the blank: ______ is a soft sedimentary rock.

A

Clay

29
Q

True or False: Chalk is a soft sedimentary rock.

A

False.

30
Q

List three types of hard sedimentary rocks.

A
  • Limestone
  • Chalk
  • Sandstone
31
Q

What is the characteristic of clay in terms of hardness?

A

Soft.

32
Q

What is the meaning of impermeable in geology?

A

Not allowing fluids to pass through.

33
Q

What is the geological term for rocks that are resistant to erosion?

A

Hard rocks.