EVOLUZIONE TETTONICO-SEDIMENTARIA NEOGENICA LUNGO UNA TRASVERSALE AI BACINI DI VOLTERRA E DELLA VAL D'ELSA

Abstract

The tectono-sedimentary, Neogene evolution of a key area of Southern Tuscany has been analyzed. The area is characterized by two extensional basins (the Volterra Basin to the west and Val d'Elsa Basin to the east) separated by a morphological and structural high (the "Dorsale Medio­toscana"). The analysis has been carried out along a cross­section from the southwest edge of the Volterra Basin (Mazzolla-Castellina in Chianti) to the eastern edge of the Val d'Elsa Basin (Chianti Mountain). Six paleo-sections were reconstructed ranging in age from the Serravallian to the Re­cent. Biostratigraphic and paleoenvironmental information obtained from micropaleontological analyses has allowed the evaluation of fault activities in the two basins at the various stages of evolution. [...]