ABSTRACT The Geocler 1 core extracted from the Clermont crater-lake sediments and surface studies made in several localities north of Clermont provided numerous stratigraphie, environmental and chronological data (TL and radiocarbon) which allow us to present a chronostratigraphy of the Limagne for the past 1 60 ky. The Clermont maar eruption has previously been TL dated to around 160 ky. In the crater-lake sediments, between 86 and 28 m deep, 111 well identified ash-falls have been encountered. No acid tephra has been discovered, but several layers rich in acicular minerals indicate acid eruptions, the origin of which remains unclear. Between 15 and 7 ky, 14 main ash-falls have been recognized and for some of them the volcano has been ide...