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SCOTTISH GEOLOGY
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Geological Time Scale

To visit a period, simply click on the relevant section:

Cenozoic
(65 - 0)
Quaternary
(1.6 to present)
Neogene
(23 - 1.6)
Palaeogene
(65 - 23)
Mesozoic
(245 - 65)
Cretaceous
(146 - 65)
Jurassic
(200 - 145)
Triassic
(251- 200)
Palaeozoic
(570 - 245)
Permian
(299 - 251)
Carboniferous
(359 - 299)
Devonian
(416 - 359)
Silurian
(443 - 416)
Ordovician
(488-443)
Cambrian
(542 - 488)

Precambrian
(4,560 - 542)

Dates in millions of years before present

 

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