Quantifying Non-Thermal Silicate Weathering Using Ge/Si and Si Isotopes in Rivers Draining the Yellowstone Plateau Volcanic Field, USA
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F21%3A10439006" target="_blank" >RIV/00216208:11310/21:10439006 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=WCN3Dabq3M" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=WCN3Dabq3M</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2021GC009904" target="_blank" >10.1029/2021GC009904</a>
Alternative languages
Result language
angličtina
Original language name
Quantifying Non-Thermal Silicate Weathering Using Ge/Si and Si Isotopes in Rivers Draining the Yellowstone Plateau Volcanic Field, USA
Original language description
In active volcanic regions, high-temperature chemical reactions in the hydrothermal system consume CO2 sourced from magma or from the deep crust, whereas reactions with silicates at shallow depths mainly consume atmospheric CO2. Numerous studies have quantified the load of dissolved solids in rivers that drain volcanic regions to determine chemical weathering rates and atmospheric CO2 consumption rates. However, the balance between thermal and non-thermal components to riverine fluxes in these areas remains poorly constrained, hindering accurate estimates of atmospheric CO2 consumption rates. Here we use the Ge/Si ratio and the stable silicon isotopes {δ(30)Si} as tracers for quantifying non-thermal silicon contributions in rivers draining the Yellowstone Plateau Volcanic Field, USA. The Ge/Si ratio (µmol.mol(-1)) was determined for seven thermal water samples (183 +/- 22), eight rivers (35 +/- 23) and six creeks flowing into Yellowstone Lake (5 +/- 3) during base flow and during peak water discharge following snowmelt. The δ(30)Si value (parts per thousand) was determined for thermal waters (-0.09 +/- 0.04), Yellowstone River at Yellowstone Lake outlet (1.91 +/- 0.23) and creek samples (0.82 +/- 0.29). The calculated atmospheric CO2 consumption associated with non-thermal waters flowing through Yellowstone's rivers during peak discharge is similar to 3.03 ton.km(-2).yr(-1), which is similar to 2% of the annual mean atmospheric CO2 consumption in other volcanic regions. This study highlights the significance of quantifying seasonal variations in chemical weathering rates for improving estimates of atmospheric CO2 consumption rates in active volcanic regions.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geochemistry, Geophysics, Geosystems
ISSN
1525-2027
e-ISSN
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Volume of the periodical
22
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
20
Pages from-to
e2021GC009904
UT code for WoS article
000723103400022
EID of the result in the Scopus database
2-s2.0-85119833491