Puga geothermal field (Ladakh)
Ladakh, Puga valley, India
Other media
- Type
- Other medium
Geothermal field just south of the Indus Suture Zone, at about 4400 m elevation (boiling near 84.5 °C), over 5 km long, with mud pools, hot springs, siliceous sinters and borate crusts (tincalconite). Steller et al. (2019): homogeneous fluids near -12.7 ‰ (126 to 138 ppm B); solids from -14.3 to -41.0 ‰, fractionation coming from tetrahedral borate uptake into amorphous silica rather than evaporation. Indicative coordinates, not published in the article.
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −12.7 ± 0.3 ‰ | −13.1 / −12.2 ‰ | 6 | hot-spring geothermal fluid (dissolved boron) Mean and standard deviation recalculated from 6 analyses, -13.1 to -12.2 (PU_01F -12.2; PU_07F -12.8; PU_09F -13.1; PU_10F -12.7; PU_11F -12.8; PU_14F -12.5). 26 to 84.5 °C, pH 6.3 to 7.8, 126 to 138 ppm B. The authors give a -12.6 ‰ mean. | Steller et al. (2019), Boron isotopes in the Puga geothermal system, India, and their imp… |
| −12.8 ‰ | 1 | mud-pool pore water (filtered) Single analysis (PU_07BF). 25 °C, pH 5.9, 440 ppm B. | Steller et al. (2019), Boron isotopes in the Puga geothermal system, India, and their imp… | |
| −14.4 ± 0.1 ‰ | −14.5 / −14.3 ‰ | 2 | evaporitic crusts and pastes (halite, tincalconite) Mean and standard deviation recalculated from 2 analyses, -14.5 to -14.3 (PU_05S -14.5; PU_10S -14.3). PU_05S: halite-sulfur paste, 13,700 ppm B; PU_10S: puffy tincalconite crust, 99,700 ppm B, representative of large areas of the field. | Steller et al. (2019), Boron isotopes in the Puga geothermal system, India, and their imp… |
| −17.6 ‰ | 1 | mud-pool rim sediment (muscovite, sulfur) Single analysis (PU_07AS). 2620 ppm B. | Steller et al. (2019), Boron isotopes in the Puga geothermal system, India, and their imp… | |
| −36 ± 2.6 ‰ | −37.8 / −34.1 ‰ | 2 | siliceous sinter (laminated crust and digitate nodules of amorphous silica) Mean and standard deviation recalculated from 2 analyses, -37.8 to -34.1 (PU_11AS -34.1; PU_14S -37.8). PU_11AS: laminated amorphous silica and quartz crust with filaments, 4210 ppm B; PU_14S: amorphous silica and calcite nodules on an outflow terrace, 6380 ppm B. | Steller et al. (2019), Boron isotopes in the Puga geothermal system, India, and their imp… |
| −28.3 ‰ | 1 | hot-spring sediment (quartz, muscovite, calcite) Single analysis (PU_11BS). 2490 ppm B. | Steller et al. (2019), Boron isotopes in the Puga geothermal system, India, and their imp… | |
| −41 ‰ | 1 | diatom-rich suspended sediment (mud pool) Single analysis (PU_07BR). 441 ppm B; lowest non-coal value according to the authors. | Steller et al. (2019), Boron isotopes in the Puga geothermal system, India, and their imp… |
Deposits of the same type
- Everest station (QOMS): PM2.5 fine particles China
- Tengchong hot spring (Yunnan) China
- Airborne dust near the Niujiaotang mine China
- Mining-road dust of Xikuangshan China
- Food crops around Xikuangshan China
- Unmineralised rocks of Xikuangshan China
- Atmospheric inputs to the Huguangyan profile (litter and rain) China
- Huguangyan Maar Lake China
Cite this page
IsoFind Atlas (2026). Puga geothermal field (Ladakh), isotope signatures. https://www.isofind.tech/isotopes/en/sites/champ-geothermal-de-puga-ladakh/ (accessed 2026-10-19).
@misc{isofind2026pugageothermalfieldladakhisot,
title = {Puga geothermal field (Ladakh), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/champ-geothermal-de-puga-ladakh/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19