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Physical Landscapes of Britain > Geological timescale > Flashcards

Geological timescale Flashcards

1
Q

Approximately how old is the Earth / When does the Pre-Cambrian era begin?

A

4500 Ma
or 4.5 Billion

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2
Q

What is the approximate time frame of the Pre-Cambrian?

A

4500 Ma to 542 Ma

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3
Q

What is the approximate timeframe of the Palaeozoic era?

A

542 Ma to 251 Ma

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4
Q

Which era follows the Pre-Cambrian?

A

Palaeozoic

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5
Q

In order, what periods sub-divide the Palaeozoic era?

A

Cambrian
Ordovician
Silurian
Devonian
Carboniferous
Permian

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6
Q

What era follows the Palaeozoic?

A

Mesozoic

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7
Q

In order, what periods sub-divide the Mesozoic era?

A

Triassic
Jurassic
Cretaceous

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8
Q

What is the approximate time-frame of the Mesozoic era?

A

251 Ma to 65.5 Ma

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9
Q

What era follows the Mesozoic?

A

Cenozoic

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10
Q

What is the approximate timeframe of the Cenozoic era?

A

65.5 Ma to present*

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11
Q

In order, which periods sub-divide the Cenozoic era?

A

Paleogene
Neogene
Quaternary

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12
Q

What are the four main eras in order?

A

Pre-Cambrian
Palaeozoic
Mesozoic
Cenozoic

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13
Q

What is the mnemonic for remembering the order of the periods up to the Cenozoic?

A

Camels Often Sit down Carefully Perhaps Their Joints Creak

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14
Q

What epochs divide the Cenozoic?

A

Palaeocene
Eocene
Oligocene
Miocene
Pliocene
Pleistocene

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15
Q

What is the mnemonic for remembering the Cenozoic epochs?

A

Perhaps Early Oiling May Prevent Pain + H*

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16
Q

What are the 5 important time values to know?

A

542 Ma - Beginning of Palaeozoic
416 Ma - Silurian/Devonian boundary
252 Ma - Palaeozoic/Mesozoic boundary
65 Ma - Mesozoic/Cenozoic boundary
2.5 Ma - Pliocene/Pleistocene boundary

17
Q

How do the Cenozoic epochs fit into the Cenozoic periods?

A

Palaeogene = Palaeocene, Eocene, Oligocene
Neogene = Miocene, Pliocene
Quaternary = Pleistocene/Holocene*

Physical Landscapes of Britain (13 decks)

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