Stable calcium isotopic compositions of Hawaiian shield lavas: Evidence for recycling of ancient marine carbonates into the mantle
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F11%3A00000614" target="_blank" >RIV/00025798:_____/11:00000614 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.gca.2011.06.010" target="_blank" >http://dx.doi.org/10.1016/j.gca.2011.06.010</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.gca.2011.06.010" target="_blank" >10.1016/j.gca.2011.06.010</a>
Alternative languages
Result language
angličtina
Original language name
Stable calcium isotopic compositions of Hawaiian shield lavas: Evidence for recycling of ancient marine carbonates into the mantle
Original language description
We report high-precision 44Ca/40Ca measurements of Hawaiian shield stage tholeiites. Our data reveal 0.3 per mil variation in their 44Ca/40Ca, which comprises 20% of the 44Ca/40Ca variation observed in global carbonates. The 44Ca/40Ca variation is correlated with Sr/Nb and 87Sr/86Sr, and this pattern is best explained by adding up to 4% ancient carbonate into the Hawaiian plume. Mass-balance calculations show that up to 40% of the Ca budget and 65% of the Sr budget in some Hawaiian (Makapuu-stage Koolau) lavas are derived from recycled carbonates. Our finding demonstrates, for the first time with the application of Ca isotopes, that ancient recycled carbonates are important components of mantle plumes which feed some of the largest terrestrial volcanoes. Thus, recycling of carbonates into the mantle is an essential part of the global Ca and C cycles.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DD - Geochemistry
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geochimica et Cosmochimica Acta
ISSN
0016-7037
e-ISSN
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Volume of the periodical
75
Issue of the periodical within the volume
17
Country of publishing house
GB - UNITED KINGDOM
Number of pages
11
Pages from-to
4987-4997
UT code for WoS article
000293732500018
EID of the result in the Scopus database
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