IL MARGINE ORIENTALE BACINO PLIO-PLEISTOCENICO DI LUCCA-MONTECARLO-VINCI: EVOLUZIONE STRATIGRAFICA E TETTONICA

Abstract

The Plio-Pleistocene Lucca - Montecarlo - Vinci basin is located in northern Tuscany between the northern Apen­nine (north) and the Arno river (south), and between the Monti Pisani (west) and Monte Albano (east), a NW-SE trending ridge separating the studied area from the Firenze - Prato Pistoia basin (Fig. 1). Detail geological mapping and strati­graphic and paleontologie analyses recently conducted in the eastern part of the basin provided useful data to the under­standing of the paleogeography and Plio-Pleistocene tecton­ic evolution of northern Tuscany. During middle Pliocene the area was the northern edge of the marine Val d'Elsa ba­sin. The global sea-level drop recorded at 2.5 Ma on the eu­static sea-level change curve (HILGEN, 1991; Rio et a/ii, 1994) was presumably responsible for the regression recorded at the top of the marine succession which is conformably overlied by lagoonal deposits. [...]