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f Migration of fluids in the Boccheggiano-Montieri (southern Tuscany, Italy) fossil geothermal system: insights for the Larderello high-enthalpy active geothermal field
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 70th EAGE Conference and Exhibition - Workshops and Fieldtrips, Jun 2008, cp-41-00060
- ISBN: 978-94-6282-104-0
Abstract
Understanding the migration of hydrothermal fluids represents a continuous task for<br>successful exploration of geothermal resources. Contributions to better constrain the<br>hydrogeological models in geothermal areas can derive from field and laboratory studies on<br>fossil geothermal systems, evidenced by the concentration of ore deposits in wide areas.<br>This work presents an integrated study based on fluid inclusion and structural analyses on a<br>Pliocene-Pleistocene fossil hydrothermal system, located to the south of the present active<br>Larderello geothermal field. Mineralization, mainly made up of quartz and pyrite, is<br>widespread distributed in the damage zone of the Pliocene Boccheggiano normal fault and,<br>far from it, in the older cataclastic levels, deriving from previous deformational events.