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Articles - Geography of the United Kingdom (Site not responding. Last check: 2007-10-24) |
 | | Large quantities of volcanic lava and ash known as the Borrowdale Volcanics covered both Wales and the Lake District, still seen in the form of mountains such as Helvellyn and Scafell Pike. |
| | Volcanic ashes and lavas deposited during this period are still found in the Mendip Hills and in Pembrokeshire. |
| | The last volcanic rocks in the UK were formed in the early Tertiary Period, between 63 and 52 Ma, with the major eruptions that formed the Antrim Plateau and the basaltic columns of the Giant´s Causeway. |
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