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Tuna and Tufo: The geology and history of the Aegadian Islands near Sicily

The Aegadian or Egadi islands (not to be confused with the Aegean islands situated between present day Greece and Türkiye) is a small archipelago of islands around 20 km off the Western coast of Sicily. These islands are most known for their historic industries, namely for a type of rock quarried from the largest island (Favignana) and the large tuna fishery around the island. In recent times this area has been made a marine protected area and the quarrying has …


Under pressure: measuring stress within the crust

At the geodynamic scale, tectonic forces guide the distribution of stress. Stress in the Earth is not constant, but varies through space. Variations in gravitational energy caused by changes in mass distribution within the Earth, forces acting at plate boundaries, and basal mantle drag all cause stress to vary and act in different directions. Overall, stress plays a key role in tectonics. It allows plates to deform, faults to slip, and earthquakes to occur. It can trigger or delay future …


Congratulations to the winners of the best EGU division blogs of 2025!

If you’re a regular reader of the EGU blogs, you may notice a certain annual tradition of ours: we like to celebrate the contribution of our science writers and bloggers over the year gone by. And 2025 was no exception of course; we had a number of inspiring and thought-provoking blog posts published across the EGU’s official blog GeoLog and division blogs. Thank you to each one of you for your time and commitment in supporting our science communication efforts! …