Upper Geyser Basin (Yellowstone)
Yellowstone National Park, Wyoming, United States
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Hydrothermal system of the Yellowstone caldera. Palmer and Sturchio (1990): waters from -9.3 to +4.4 ‰; Norris and Upper Geyser basins, Calcite Springs and Clearwater stay close to fresh rhyolite (-5.2 ‰), Mammoth, Sheepeater and Rainbow near -8 ‰, like altered rhyolite (-9.7 ‰) or sediments outside the caldera. Ear, Black Sand and Sapphire springs and water from drill hole Y-7 (140 °C).
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −4.9 ± 1 ‰ | −5.9 / −3.6 ‰ | 4 | thermal water Mean and standard deviation recalculated from 4 analyses, -5.9 to -3.6 (Y87-6 Ear -4.8; Y87-10 Black Sand -3.6; Y87-11 Sapphire -5.9; Y7-240 Y-7 -5.1). Y87-6 Ear: 95 °C, pH 8.0, B 0.36 mmol/kg, Cl 10.3 mmol/kg; Y87-10 Black Sand: 92 °C, pH 8.2, B 0.29 mmol/kg, Cl 7.9 mmol/kg; Y87-11 Sapphire: 95 °C, pH 7.9, B 0.28 mmol/kg, Cl 7.6 mmol/kg; Y7-240 Y-7: 140 °C, pH (7.6), B 0.34 mmol/kg, Cl 9.5 mmol/kg (pH in brackets measured in the laboratory). | Palmer & Sturchio (1990), The boron isotope systematics of the Yellowstone National Park … |
Deposits of the same type
- Deerbone Spring (Yellowstone) United States
- Cistern Spring (Yellowstone) United States
- Norris Geyser Basin (Yellowstone) United States
- Mammoth Hot Springs (Yellowstone) United States
- Santa Barbara Basin
- Monterey Bay, station M1
- Hydrogenetic Fe-Mn deposit (crust), Pacific (F7-87-SC, D9-16)
- Guaymas Basin hydrothermal fluids (Gulf of California)
Cite this page
IsoFind Atlas (2026). Upper Geyser Basin (Yellowstone), isotope signatures. https://www.isofind.tech/isotopes/en/sites/bassin-superieur-des-geysers-yellowstone/ (accessed 2026-10-20).
@misc{isofind2026uppergeyserbasinyellowstoneis,
title = {Upper Geyser Basin (Yellowstone), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/bassin-superieur-des-geysers-yellowstone/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20