Boletín de Geología

Vol. 26 No. 42 (2004): Boletín de Geología
Articles

Mineralogía y fisicoquímica de las fuentes termales del departamento de Nariño

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  • L.E Lesmes,
  • L.I Bobadilla,
  • M.L Hernandez,
  • Y.L Cañon,
  • J.L Mojica,
  • G.L Garzón

Published 2004-03-25

Keywords

  • Thermal springs,
  • hydrothermal alteration,
  • volcanology

How to Cite

Lesmes, L., Bobadilla, L., Hernandez, M., Cañon, Y., Mojica, J., & Garzón, G. (2004). Mineralogía y fisicoquímica de las fuentes termales del departamento de Nariño. Boletín De Geología, 26(42), 57–66. Retrieved from https://revistas.uis.edu.co/index.php/revistaboletindegeologia/article/view/909
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Abstract

The volcanoes at Nariño department are active stratovolcanoes located from 5 to 10 Km near towns with population between 30000 and 350000 inhabitants. Thermal springs of these volcanoes are brackish, with temperatures ranging from 22 to 62°C. Two types of altered rocks were identified: acid alteration on the summit of studied volcanoes and intermediate to alkaline alteration on the low part. All thermal waters of theses volcanoes are inmature and have not established an equilibrium state in the water-rock interphase. There are twenty-one thermal springs in the department of Nariño, three of which are classified as bicarbonates; five are chlorides and another have high contents of sulphates in its waters.

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