Abstract
A peralkaline microgranitic enclave was found enclosed in the Green Tuff ignimbrite on Pantelleria island. This enclave represents the intrusive equivalent of pantelleritic lava flows. Its K Na-feldspar has been dated by 39ArAOAr and gave a plateau age of 517 ± 19 ka. This age is considerably older than all outcropping rocks dated so far ( < 324 ka), and requires to shift the onset of magmatc activity on Pantelleria back in time.
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