| Geography Dictionary: geological column |
Also known as the stratigraphical column, this is the separation of geological time into eras and periods, as below:
| ERA | PERIOD | EPOCH | END DATE, MILLION YEARS | |
|---|---|---|---|---|
| Quaternary | Holocene (recent) | |||
| Pleistocene (glacial) | ||||
| Tertiary(Cenozoic) | Pliocene | 2 | ||
| Miocene | ||||
| Oligocene | ||||
| Eocene | ||||
| Secondary(Mesozoic) | Cretaceous | 65 | ||
| Jurassic | 135 | |||
| Triassic | 190 | |||
| Primary(Palaeozoic) | Permian | 225 | ||
| Carboniferous | 280 | |||
| Devonian | 345 | |||
| Silurian | 395 | |||
| Ordovician | 440 | |||
| Cambrian | 500 | |||
| Precambrian | 570 |
| 5min Related Video: geological column |
 | fundamental complex (geology) |
| stratigraphy |
| Succession (geology) |
 | Who founded geological columns in the 1800s? |
| Who came up with the geological column? |
| What is the difference between the geologic time scale and the geologic column? |
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 | Geography Dictionary. A Dictionary of Geography. Copyright © Susan Mayhew 1992, 1997, 2004. All rights reserved. Read more |
