Zinc isotopes reveal disparate enriched sources of contemporary lamprophyres in Eastern Dharwar Craton
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F23%3A00578537" target="_blank" >RIV/67985831:_____/23:00578537 - isvavai.cz</a>
Alternative codes found
RIV/41601670:_____/23:N0000009 RIV/00216305:26110/23:PU150376
Result on the web
<a href="https://link.springer.com/article/10.1007/s00410-023-02073-1" target="_blank" >https://link.springer.com/article/10.1007/s00410-023-02073-1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00410-023-02073-1" target="_blank" >10.1007/s00410-023-02073-1</a>
Alternative languages
Result language
angličtina
Original language name
Zinc isotopes reveal disparate enriched sources of contemporary lamprophyres in Eastern Dharwar Craton
Original language description
Lamprophyres are mantle-derived rocks characterized by enrichment of incompatible elements and volatiles, however, the origin of their enriched sources remains enigmatic. Here we present zinc isotopic data for contemporary Mesoproterozoic (~ 1.1 Ga) lamprophyres from three localities of the Eastern Dharwar Craton. The Mudigubba and Kadiri lamprophyres with island-arc basalt (IAB)-like trace element features, such as positive Pb and negative Nb–Ta, Zr–Hf and Ti anomalies, have mid-ocean ridge basalt (MORB)-like δ66Zn values ranging from + 0.22‰ to + 0.29‰. In contrast, the Udiripikonda lamprophyre shows higher-than-MORB δ66Zn values of + 0.39‰ to + 0.48‰ and elemental features of intra-plate magmas with a lack of pronounced Nb–Ta-negative anomalies. Based on the covariations between Zn isotopes and trace element ratios, we infer that the Mudigubba and Kadiri lamprophyres with MORB-like Zn isotopes and high Ba/La, K/Nb and low Nb/La, Ce/Pb ratios are inherited from sub-continental lithospheric mantle metasomatized by fluids derived from a subducted slab. On the contrary, the higher-than-MORB Zn isotopic compositions, with low Ba/La, K/Nb and high Nb/La, Ce/Pb, K/U and Ba/Th ratios for the Udiripikonda lamprophyre are inferred to derive from lithospheric mantle enriched by carbonatitic melts or subducted carbonate-bearing sediments within the mantle transition zone. Hence, our study suggests that contemporary lamprophyres can be derived from disparate enriched mantle sources.
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
—
OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/GX19-29124X" target="_blank" >GX19-29124X: EVOLUTION AND POST-EMPLACEMENT HISTORY OF CARBONATITES: IMPLICATIONS FOR THE MOBILITY AND CONCENTRATION OF CRITICAL METALS</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Contributions to Mineralogy and Petrology
ISSN
0010-7999
e-ISSN
1432-0967
Volume of the periodical
178
Issue of the periodical within the volume
November
Country of publishing house
DE - GERMANY
Number of pages
14
Pages from-to
89
UT code for WoS article
001107980000001
EID of the result in the Scopus database
2-s2.0-85176943564