Hydrogeochemical Model of a Low Temperature Geothermal System in a Mountainous Terrain, Serra da Estrela, Central Portugal

Marques, J. Espinha; Marques, J. M.; Chamine, H. I.; Carreirra, P. M.; Fonseca, P. E.;Samper, J.; Vieira, G. T.; Mora, C.; Teixeira, J.; Carvalho, J. Martins; Borges, F. Sodre; Rocha, F. T.

Key words: Resource Characterization; low temperature geothermal system, hydrogeochemistry, isotope hydrology, fractured crystalline media, conceptual circulation model
Conference: Geothermal Resources Council Transactions
Year: 2006
Session: Resource Characterization; low temperature reservoirs; hydro
Language: English

Full text

Open the paper

Opens in a new tab

Abstract

In this paper, we characterize the composition and flow paths of the low-temperature geothermal waters that discharge in the Manteigas–Nave de Santo António–Torre region, situated in the mountainous terrain of Serra da Estrela (Central Portugal, Iberian Massif). Geologic, geomorphic, structural, hydrogeochemical, isotopic (18O, 2H and 3H) and climatic information were used to develop a conceptual circulation model of the geothermal system. The model describes the origin of the fluids, the potential recharge sites and the depths of fluid circulation within the fractured granitic reservoir.

Copyright 2006, Geothermal Resources Council. Readers who download papers from this site should honour the copyright of the original authors, and may not copy or distribute the work further without the permission of the original publisher.