a pilgrimage in search of deep time

Jedburgh, just off Dere Street, Scottish Borders. On the Berwickshire coast at Siccar Point James Hutton found an exposure of the sandstone, shales and greywacke, with the strata of the sedimentary rocks lying at an angle to each other – what is now called an unconformity. Another, inland at Inchbonny by Jedburgh, is now known…

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