Hydrogeological and geochemical characterisation of the Rock of Orvieto |
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| Authors: | Alberto Tazioli Pietro Conversini Angelo Peccerillo |
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| Institution: | 1.Dipartimento di Scienze e Ingegneria della Materia, dell’Ambiente ed Urbanistica,Università Politecnica delle Marche,Ancona,Italy;2.Dipartimento di Ingegneria Civile e Ambientale,Università di Perugia,Perugia,Italy;3.Dipartimento di Scienze della Terra,Università di Perugia,Perugia,Italy |
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| Abstract: | The town of Orvieto, located on the Rock of the same name, is an example of “vulnerable town”; problems of slope instability
connected with the lithological and morphological characteristics of the Rock have been thoroughly examined and discussed
during previous research studies. Hydrogeochemical data about groundwater recharging the springs present in the area were
never taken into account. Pollution of the springs is well known but still occurs for unclear reasons. The aim of this work
is therefore to present the results of a hydrogeological and geochemical investigation of all the springs along the slopes
of Orvieto hill and at the foot of the tuffaceous Rock, to characterize the groundwater flow paths and to suggest a possible
source of contamination. The research study was carried out during three hydrogeochemical surveys in the years 1998–1999,
2003–2004, and 2007–2008. |
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