Geochemical studies of the geothermal area east of the Jombo Hill intrusion, Coast Province, Kenya: 1. Hot water reservoir temperatures

Abstract

The hot springs east of Jombo Hill intrusion occur at four different places over an area measuring 9 km x 2 km. They consist of slightly alkaline waters of pH 7.5-8.5, with surface discharge temperatures averaging 59oC - 70oC. Both the silica and the Na-K-Ca geothermometers give temperatures of about 170oC. The minimum temperature for the reservoir therefore is 170oC