The cliff of Punta di Saeta, located at the coast north of Saint-Florent, exposes a large section through the Miocene syn-rift sediments of the Saint-Florent basin.
The Punta di Saeta cape lies at the coast northwest of Patrimoniu. In the cliff, a sedimentary succession of bioclastic limestones and partly glauconite-bearing sandstones can be observed. These were deposited on top of the Balagne Nappe. The limestone is mainly composed of rhodoliths and oncoliths. Moreover, there are shells of bivalves and fossil bryozoa. The sedimentary facies indicates a shallow marine depositional environment, and a change from transgressional to regressional conditions during the deposition of the basin sediments. The subsidence of the Miocene Saint-Florent basin is related to extensional tectonics during the opening of the Liguro-Provencal ocean basin.