Isotopic and chemical composition of parbati valley geothermal discharges, North-West Himalaya, India

Giggenbach, Werner F.; Gonfiantini, R.; Jangi, B. L.; Truesdell, A.H.

doi:10.1016/0375-6505(83)90030-5

Cited by 261 publications

(89 citation statements)

References 11 publications

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“…6. In this diagram cross comparison of the not always re-equilibrated K/Na geothermometer with the fast re-equilibrating K 2 /Mg geothermometer [27] further supports the fact that all the thermal systems in the thermal provinces studied have attained low-to-medium temperature equilibration. The maximum expectable K 2 /Mg deep temperature is still the one estimated at Tattapani (samples 49 and 50: 1301 35³C).…”

Section: Geothermometrysupporting

confidence: 69%

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Origin and evolution of ‘intracratonic’ thermal fluids from central-western peninsular India

Minissale¹,

Vaselli

Chandrasekharam

et al. 2000

Earth and Planetary Science Letters

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Section: Geothermometrysupporting

confidence: 69%

“…5 (after [27]). In particular, their position close to the He corner suggests a very long residence time of the gas phase in a crust a¡ected by U and Th decay.…”

Section: Chemistry Of Gasesmentioning

confidence: 99%

Origin and evolution of ‘intracratonic’ thermal fluids from central-western peninsular India

Minissale¹,

Vaselli

Chandrasekharam

et al. 2000

Earth and Planetary Science Letters

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“…The two described groups are clearly recognised in the N 2 /100-He*10-Ar diagram of Fig. 8 (Giggenbach et al, 1983), where the position of the first group near the air saturated water (ASW) and not near the composition of air, as one would expect, suggests that nitrogen is derived by the exsolution of solubilised gas from air-saturated water. While these values do suggest a low ratio of magmatically derived gases relative to shallow air-saturated water Fig.…”

Section: Geochemistry Of Gasesmentioning

confidence: 88%

“…The figure clearly suggests anomalous CO 2 degassing along the Chewkare area (see text). (Giggenbach et al, 1983) with reference positions of air, air-saturated water (ASW), magma and crust.…”

Section: Origin Of the Deep Fluidsmentioning

confidence: 99%

Geothermal potential and origin of natural thermal fluids in the northern Lake Abaya area, Main Ethiopian Rift, East Africa

Minissale

Corti

Tassi

et al. 2017

Journal of Volcanology and Geothermal Research

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In this study, the occurrence, chemical composition, origin and geothermal significance of thermal springs and fumaroles naturally discharging in the area located north of the Lake Abaya (western margin of the Main Ethiopian Rift, East Africa) are reviewed in relation with recent tectonics. All thermal springs showed a dominantly Na-HCO 3 composition, consistent with observations dating from at least 1972, and most of them displayed a narrow range of δD and δ 18 O isotopic compositions for water similar to regional meteoric origins. These observations suggest that water-rock interaction processes occur in all aquifers and dominate the contributions of water that actively circulate within thermal fluids, and also suggest a similar elevation of groundwater recharge throughout the study area. Most of the thermal springs are dominated by a CO 2 -rich gas phase and discharge along the active faults bordering the western edge of the Main Ethiopian Rift valley. The δ 13 C values of CO 2 and the 3 He/ 4 He isotopic ratios are consistent with the presence of mantle-derived fluids similar to what is observed in many other areas along the kinematically active African Rift, especially within Ethiopia. The application of geothermometric techniques in the liquid and the gas phases suggests the presence of a deep reservoir in which the fluids equilibrated at a maximum temperature of approximately 180°C. Additionally, the presence of fumaroles at boiling temperatures and water/mud boiling pools in several places suggests that the geothermal reservoir is positioned at a relatively shallow depth and likely located in the western side of the study area. The analysis of data collected throughout time reveals that the waters of Lake Abaya have experienced an increase in salinity of 20% paralleled contemporaneously with a decrease in pH and δ 18 O and δD of water in the last 40 years; these changes do not appear to be related to climate changeinduced increases in temperature or evaporation at the global scale.

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“…Chemical geothermometers depend on the water-mineral equilibrium and give the last equilibration temperature for the reservoir (Nicholson, 1993). Several geothermometry techniques have been developed to predict reservoir temperatures in geothermal systems (Fournier and Truesdell, 1973;Fournier, 1979;Fournier and Potter, 1982;Arnórsson et al, 1983;Giggenbach et al, 1983;Giggenbach, 1988). All of these techniques are based on the assumption that temperature dependent water-mineral equilibrium is attained in the reservoir.…”

Section: Geothermometersmentioning

confidence: 99%

Hydrochemical and Isotopic Composition of Tuzla Geothermal Field (Canakkale-Turkey) and its Environmental Impacts

Baba

Yüce

Deniz

et al. 2009

Environmental Forensics

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Isotopic and chemical composition of parbati valley geothermal discharges, North-West Himalaya, India

Cited by 261 publications

References 11 publications

Origin and evolution of ‘intracratonic’ thermal fluids from central-western peninsular India

Origin and evolution of ‘intracratonic’ thermal fluids from central-western peninsular India

Geothermal potential and origin of natural thermal fluids in the northern Lake Abaya area, Main Ethiopian Rift, East Africa

Hydrochemical and Isotopic Composition of Tuzla Geothermal Field (Canakkale-Turkey) and its Environmental Impacts

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