Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Oxygen and U-Th isotopes and the timescales of hydrothermal exchange and melting in granitoid wall rocks at Mount Mazama, Crater Lake, Oregon

Meagan E. Ankney, Charles R. Bacon, John W. Valley, Brian L. Beard, Clark M. Johnson

Geochimica et Cosmochimica Acta · 2017

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Summary

This geochemical study applied oxygen and U-Th isotopic analysis to granitoid samples collected from Mount Mazama (Crater Lake, Oregon) to elucidate the timescales and mechanisms governing hydrothermal fluid–rock interaction and partial melting in volcanic wall rocks. The work contributes to understanding crustal processes in volcanic systems through high-resolution isotopic tracing of mineral-fluid exchange and magmatic differentiation. As the paper addresses fundamental volcanology and geochemistry rather than agricultural or nutritional systems, it falls outside Vitagri's thematic scope.

UK applicability

This volcanological and geochemical study has no direct applicability to UK farming systems, soil health, or human nutrition research agendas.

Key measures

Oxygen isotope ratios (δ18O), uranium-thorium isotope ratios, and derived timescales of hydrothermal alteration and melting processes in granitoid samples

Outcomes reported

This study analysed oxygen and uranium-thorium isotope ratios in granitoid wall rocks from Mount Mazama to constrain the timescales and mechanisms of hydrothermal exchange and partial melting.

Theme
General food systems / other
Subject
Other / interdisciplinary
Study type
Research
Study design
Laboratory / in vitro analysis
Source type
Peer-reviewed study
Status
Published
Geography
United States
System type
Other
DOI
10.1016/j.gca.2017.04.043
Catalogue ID
BFmovi2ass-nivax5

Topic tags

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