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.

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
What is the difference between discordant and concordant coastlines?
* Discordant: Layers of rock arranged perpendicular to the coastline. * Concordant: Layers of rock arranged parallel to the coastline.
26
What is an example of a discordant coastline?
Jurassic coastline in Dorset.
27
Fill in the blank: ______ are permeable rocks.
Sandstone
28
Fill in the blank: ______ is a soft sedimentary rock.
Clay
29
True or False: Chalk is a soft sedimentary rock.
False.
30
List three types of hard sedimentary rocks.
* Limestone * Chalk * Sandstone
31
What is the characteristic of clay in terms of hardness?
Soft.
32
What is the meaning of impermeable in geology?
Not allowing fluids to pass through.
33
What is the geological term for rocks that are resistant to erosion?
Hard rocks.