Radiogenic Strontium‐ and Uranium‐Isotope Tracers of Water‐Rock Interactions and Hydrothermal Flow in the Upper Geyser Basin, Yellowstone Plateau Volcanic Field, USA DOI Creative Commons
James B. Paces, Shaul Hurwitz, Lauren N. Harrison

и другие.

Geochemistry Geophysics Geosystems, Год журнала: 2024, Номер 25(10)

Опубликована: Окт. 1, 2024

Abstract Natural radiogenic isotopes (primarily 87 Sr/ 86 Sr) from hot springs in the Upper Geyser Basin of Yellowstone Plateau volcanic field and associated rocks were used to evaluate groundwater flow patterns, water‐rock reactions, extent mixing between various sources. Thermal waters have very low uranium concentrations 234 U/ 238 U activity ratios near 1.0, which limit their utility as tracers this reducing setting. higher Sr (<22 ng/g) a wide range values that vary both temporally at individual discharge sites adjacent springs, indicating conduits tap different subsurface reservoirs varying degrees. local rhyolites compositions bound observed throughout basin. Non‐boiling on west flank basin water with consistent through young exposed surface. Boiling central reflecting interactions older, more rocks. Variability upwelling thermal requires component derived lava or glacial sediments, likely, deeper sources circulating buried Lava Creek Tuff having intermediate Sr. Isotope data constrain basin‐wide output 110–140 kg·s −1 . Results underscore valuable hydrothermal patterns improve understanding temperature‐dependent reactions one largest continental systems Earth.

Язык: Английский

Radiogenic Strontium‐ and Uranium‐Isotope Tracers of Water‐Rock Interactions and Hydrothermal Flow in the Upper Geyser Basin, Yellowstone Plateau Volcanic Field, USA DOI Creative Commons
James B. Paces, Shaul Hurwitz, Lauren N. Harrison

и другие.

Geochemistry Geophysics Geosystems, Год журнала: 2024, Номер 25(10)

Опубликована: Окт. 1, 2024

Abstract Natural radiogenic isotopes (primarily 87 Sr/ 86 Sr) from hot springs in the Upper Geyser Basin of Yellowstone Plateau volcanic field and associated rocks were used to evaluate groundwater flow patterns, water‐rock reactions, extent mixing between various sources. Thermal waters have very low uranium concentrations 234 U/ 238 U activity ratios near 1.0, which limit their utility as tracers this reducing setting. higher Sr (<22 ng/g) a wide range values that vary both temporally at individual discharge sites adjacent springs, indicating conduits tap different subsurface reservoirs varying degrees. local rhyolites compositions bound observed throughout basin. Non‐boiling on west flank basin water with consistent through young exposed surface. Boiling central reflecting interactions older, more rocks. Variability upwelling thermal requires component derived lava or glacial sediments, likely, deeper sources circulating buried Lava Creek Tuff having intermediate Sr. Isotope data constrain basin‐wide output 110–140 kg·s −1 . Results underscore valuable hydrothermal patterns improve understanding temperature‐dependent reactions one largest continental systems Earth.

Язык: Английский

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