Did the CI volcanic eruption play a role in the transition from the Middle to Upper Palaeolithic?

Horizons of volcanic tephra were repeatedly deposited across Mediterranean and Eastern Europe throughout the Pleistocene, providing a distinct chronological marker. One of these main tephra events, the Campanian Ignimbrite (CI), took place around the time of the Middle to Upper Palaeolithic transition. Its influence on Neanderthal and early modern human populations and cultural changes has…