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Why are Sardinia and Corsica geologically connected?
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Sardinia
Sardinia, Italy.
Sardinia and Corsica are geologically connected because they are both aligned along a single mountain belt that rises more than 13,000 feet (3,950 metres) from the surrounding seafloor.1
Both islands serve as remnants of a Hercynian block known as the Tyrrhenian continent, characterized by rocks primarily dating back to the Paleozoic Era. This shared geological foundation is further defined by a continental slope that is deeply fretted by submarine canyons.1