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Globally significant volcanic event formed Giant’s Causeway, scientists find

Published 14 June 2026 · science

Geochronologists say Antrim coastline’s basalt columns developed over 5.5m years – 8m less than thought For centuries, the tale has been passed from generation to

Geochronologists say Antrim coastline’s basalt columns developed over 5.5m years – 8m less than thought For centuries, the tale has been passed from generation to generation: how the Irish giant Finn McCool built the Giant’s Causeway in Northern Ireland to fight Benandonner, his Scottish rival, by hurling chunks of the Antrim coastline into the sea. Now, scientists have revealed it was intense volcanic activity during a “major globally impacting volcanic event” – and not a legendary battle between two destructive giants – that led to the formation of the coastline’s 40,000 distinctive interlocking basalt columns about 60m years ago. Continue reading...

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Globally significant volcanic event formed Giant’s Causeway, scientists find

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Published: June 15, 2026 • 4:31 AM IST · Updated: June 15, 2026 • 5:06 AM ISTBy TheBriefWire Editorial Team

Globally significant volcanic event formed Giant’s Causeway, scientists find

Key points

  • Geochronologists say Antrim coastline’s basalt columns developed over 5.5m years – 8m less than thought For centuries, the tale has been passed from generation to generation: how the Irish giant Finn McCool built the Giant’s Causeway in Northern Ireland to fight Benandonner, his Scottish rival, by hurling chunks of the Antrim coastline into the sea.
  • Now, scientists have revealed it was intense volcanic activity during a “major globally impacting volcanic event” – and not a legendary battle between two destructive giants – that led to the formation of the coastline’s 40,000 distinctive interlocking basalt columns about 60m years ago.

Published June 15, 2026.


📌 Source: The Guardian

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