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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

  • Czech description

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