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An international Journal published under the auspices of:

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Supplements of Geografia Fisica e Dinamica Quaternaria
Volume I - 1988

 

Proceedings of the meeting:
The Morphotectonics in Italy

D’AMATO AVANZI G. & PUCCINELLI A.

La valle villafranchiana della Turrite di Gallicano (Val di Serchio) e le sue implicazioni neotettoniche – The villafrallchian valley of Turrite di Gallicano (Serchio Valley) and its ncotectonic implications

Pages 147-155

Abstract

In the Early Villafranchian, the terrilory belwecn Barga and Gallicano (Lucca, ’1′llscany), along the Serchio river, was a lacllstrine basin, whose distinctivc scdimcms are days and dayey.sands with layers of lignite. Thc Tùrrite di Gallicano, a torrent rhat has its source in the Apuan AJps, is an affluent of the Serchio river; along its lowcr COllrse olltcrop typicaI deposits of alluvial fan, thar consist of ca\carcolls gravcls and conglomcrates wirh rare c1ayey-sands interbeddings. These deposits, which show an heleropic passage lO the lacustrinc days, have an Early Villafranchian age; conscquently the Tùrrite was a tributary of the ancient lake. Since that time, the torrent has not substantially changed ils course, while some variations of the Iithological composition of alluvial conlribution took piace. By reconstruction of the originai sudace of lhe ancient alluvional fan, it presenL1y results lhat, at Barga, such deposits are more than 300 m higher than their primitive position. This difference in a1tirude documents an uplift of the Barga zonc, that happcned after the Middle-Late Pleistocene. Final1y, the Authors trace a synthelic picture of the evolutive history of the region.

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