A New Geothermal Resource in Los Cabos, Baja California Sur, Mexico

Abstract

The geothermal potential in Baja California has been well known as exemplified by developments at Cerro Prieto and Las Tres VÌrgenes. However, conventional exploration studies have overlooked an area in Los Cabos that may well comprise an important geothermal resource. Recent investigations of coastal hydrothermal systems in Baja California Peninsula provide evidence of the occurrence of thermal anomalies in the area of Los Cabos, Baja California Sur.

Los Cabos is an important tourist area with a growing water demand, and the possibility of using geothermal water in desalination processes has stimulated funding to study coastal wells that discharge hot water. Chemical geothermometers yield equilibrium temperatures close to 200?C, and oxygen and hydrogen isotopic values indicate an important oxygen shift in the thermal water, mixing with seawater, and a chemical affinity with submarine hydrothermal systems.