Title:

Geochemical Evidence of Natural Recharge in Larderello and Castelnuovo Areas

Authors:

C. Calore, R. Celati, F. D'Amore, P. Noto

Geo Location:

Larderello, Italy

Conference:

Stanford Geothermal Workshop

Year:

1982

Session:

Reservoir Chemistry

Language:

English

File Size:

423KB

View File:

Abstract:

The spatial variations of the isotopic composition of the fluid in Castelnuovo and the southern zone of Larderello were, in the early 1970s, interpreted as the effects of a natural recharge. It was subsequently noted that this distribution might be the result of the condensation process, at least in areas with no tritium. In order to further investigate this problem a study was undertaken of the spatial and temporal variations in the gaslsteam ratio and in the isotopic composition. Preliminary interpretation of the results of this study confirms that the evolution of fluid composition in this area is due to a mixing between the fluid originally present in the reservoir and recent meteoric waters. The area affected by natural recharge is, moreover, in continual expansion.


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