Selected hydrogeochemistry of poring hot Spring (Ranau, Sabah) with application to geothermometry

Anand Nainar (2009) Selected hydrogeochemistry of poring hot Spring (Ranau, Sabah) with application to geothermometry. Universiti Malaysia Sabah. (Unpublished)


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This study was done in the Poring Hot Spring area in Ranau, Sabah, Malaysia. Specifically, this study consists of (i) the temperature and pH measurement, (ii) the analysis of geothermal related elements in the fluid of the hot spring and (iii) the application of chemical geothermometers for the estimation of reservoir temperatures. The elements analysed in this study are Na, K, Ca, Mg, Li and Si while SiO₂ values were calculated by the gravimetric method. The hot spring water was sampled and preserved according to guidelines provided by APHA (1998). The analysis of the elements Na, K, Ca and Mg was done through flame atomic absorption spectroscopy. Li and Si on the other hand was analysed by the inductively coupled plasma method. From the surface study, the highest temperature and pH was found to be 60.5 °C and pH 8.23 respectively while the lowest values of temperature and pH are 56.8 °C and pH 8.07 respectively. The mean for the temperature and pH is 59°C and pH 8.14 respectively while the RSD is 2.67 % and 0.89 % respectively. For the geochemistry, concentrations of the selected elements in all springs are close to each other with exception to Si from Spring 5 where the value is 33.8 mg/L. This may be due to silification. The mean concentration for Na, K, Ca, Mg, Li, and Si are 312.75, 12.28, 4.86, 1.47, 0.83 and 38.56 mg/L respectively while their RSD are 5.41, 9.36, 11.11, 18.37, 7.22 and 8.95 % respectively. The Quartz-no steam loss geothennometers which is believed to be best applied in this study yielded values of 126.26, 130.13, 130.13 and 119.85 °C respectively for Springs 1 - 5. The Na/K (Fournier) and Na-K-Ca geothermometers yielded overly high temperatures while the α-Cristobalite, β-Cristobalite and amorphous silica geothermometers produced temperatures that were too low. The conclusion that can be drawn is that all springs that were studied originated from the same low-enthalpy reservoir (119.85 - 130.13ºC) and the hot springs are best suited for recreational activities.

Item Type: Academic Exercise
Keyword: Poring Hot Spring, gravimetric method, flame atomic absorption spectroscopy, temperature, geothennometer
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Department: SCHOOL > School of Science and Technology
Depositing User: ADMIN ADMIN
Date Deposited: 09 Jun 2016 10:16
Last Modified: 30 Oct 2017 10:05

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