Abstract
The Campiglia Mari.ma Fe-‐Cu-‐Zn-‐Pb(-‐Ag) skarn deposit is of small size (∼ 50 kt of base metals) and medium/low-‐grade (1.4% Cu; 3.8% Zn; 2.0% Pb) with modest economic interest but its geological characterisMcs (e.g., spaMal associaMon with magmaMc rocks, textural features of primary silicate minerals, ore bodies shape, etc) make it an ideal site to study skarn-‐ and ore-‐forming processes.
The present PhD thesis contributes to the debate on processes of skarn formaMon providing detailed field data integrated with petrographic, mineralogical and geochemical-‐
isotopic data of the Campiglia Mari.ma magmaMc-‐hydrothermal system. This locality offers also the opportunity to study the tridimensional shape of the geological bodies, thanks to past underground mining acMviMes (during almost three millennia of ore exploitaMon), with addiMonal data derived from about 25 km of drillholes.
The results of this PhD work led to a deep review of the classical Campiglia Mari.ma exoskarn model and suggest an alternaMve holisMc model for the development of skarn and ore bodies in the regional-‐local tectono-‐magmaMc se.ng. The magmaMc-‐hydrothermal and ore temporal sequence, together with a unifying tectonic-‐magmaMc-‐metasomaMc model proposed for Campiglia Mari.ma area can be used elsewhere as a guide in defining possible targets for ore and geothermal exploraMon.
In addiMon to the scienMfic purposes, the results of this thesis have been and will be made availble also for tourists and laymen with no significant geological background by means of specific publicaMons, conferences and mineralogical exhibiMons, in the framework of a fruiWul cooperaMon between the DiparMmento di Scienze della Terra (University of Pisa), the IsMtuto di Geoscienze e Georisorse of Pisa (CNR) and the Parchi Val di Cornia S.p.A., that manages the Parco Archeominerario di San Silvestro.
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