What colour was the world in the past?

'What colour was the world in the past? Using rock evidence and ‘the present is the key to the past’ to colour the geological world'.

Earth’s surface colours today are produced by the same processes that operated in the geological past. Since the features that made up past geological landscapes were coloured in the same ways as today, many of these landscapes must have had the same combination of colours as Earth’s surface today.

This activity is a discussion, using the colours of unweathered surface rocks and ‘the present is the key to the past’ to give a coloured picture of past geological worlds.

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