Carbonatite Isotope Dataset (CID): A critical reappraisal of
Sr, Nd, C, O isotopes and trends

J 2025

Carbonatite Isotope Dataset (CID): A critical reappraisal of Sr, Nd, C, O isotopes and trends

HURAI, V.; M. HURAIOVÁ; Marek SLOBODNÍK a Karel SLAVÍČEK

Základní údaje

Originální název

Carbonatite Isotope Dataset (CID): A critical reappraisal of Sr, Nd, C, O isotopes and trends

Autoři

HURAI, V.; M. HURAIOVÁ; Marek SLOBODNÍK a Karel SLAVÍČEK

Vydání

Earth-Science Reviews, Elsevier, 2025, 0012-8252

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10505 Geology

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 10.000 v roce 2024

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1016/j.earscirev.2025.105273

UT WoS

001578851400001

EID Scopus

2-s2.0-105016197716

Klíčová slova anglicky

Carbonatite; Sr-Nd isotopes; C -O isotopes; Inverse modelling; Mantle-crust interaction; Mixing trends; Hydrothermal alteration

Štítky

14315010, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 29. 10. 2025 16:23, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Here we present a compilation of published Sr[sbnd]Nd and C[sbnd]O isotope data on carbonatites and phoscorites of the World integrated in the Carbonatite Isotope Dataset, covering the known interval of the carbonatite formation from recent up to ∼3 Ga ago. The dataset brings together 2545 87Sr/86Sr, 2692 143Nd/144Nd and 2528 13C/12C-18O/16O isotope ratios from a total of 319 deposits and occurrences with known ages. Measured Sr[sbnd]Nd isotope ratios have been revised, recalculated and errors fixed using a set of unified equations and normalization factors. The final data can be sorted according to chemical composition, formation age, model ages, geotectonic setting, associated silicate magma and geographic affiliations (region, state, and continent). Analysis of Sr[sbnd]Nd isotope evolution of carbonatites and phoscorites revealed gradual change from primordial depleted mantle character of parental magmas to recent HIMU-like, plume-related character modified to various extents by the assimilation of continental crust. Large perturbations of Sr[sbnd]Nd isotope compositions are coincidental with the break-up and fragmentation of Columbia and Gondwana. Theoretical examples of isotope fractionation associated with magma mixing, phenocryst accumulation, degassing, and alteration have been calculated and compared with those observed in carbonatites affiliated with mantle plumes. Most variations in the recorded C[sbnd]O isotope composition can be attributed to subsolidus alteration of primary igneous carbonatite with low-temperature aqueous fluids enriched in CO2. The low-temperature alteration combined with the igneous source heterogeneity and high-temperature magma-crust interactions obscure the stable isotope fractionation coincidental with phenocryst accumulation and magma degassing. Inverse modelling of Sr-Nd-C-O isotope trends showed that the interaction of mantle plume-derived magma with the crust may result in mixing trends with curvatures and slopes dominantly controlled by time-integrated changes in the 143Nd and 87Sr proportions, thereby modifying Sr/Nd ratios in the mixing phases. Models of mixing mantle components with similar Sr/Nd ratios, such as HIMU and EM1, also showed conspicuous, age-dependent modifications of the mixing line slope. Hence, the HIMU-EM1 trend revealed in modern carbonatites cannot be used as a template for interpreting isotopic signatures of pre-Cretaceous carbonatites. It is therefore likely that the role of enriched mantle component EM1 has been overestimated in Precambrian carbonatites at the expense of a continental crust assimilant. The same conjecture is valid for the enriched mantle component EM2, because sub-horizontal mixing trajectories with a wide range of εSrCHUR combined with limited range of εNdCHUR can also be reproduced by the contamination of mantle plume-derived magma with crustal assimilants. Except for specific carbonatites, e.g. crustal-anatectic, ocean island-related or kimberlite-associated, the Sr[sbnd]Nd and C[sbnd]O isotope ratios themselves cannot unambiguously discriminate individual genetic and geotectonic groups without additional supporting geochemical data and/or radiogenic isotope systems.

Citovat

HURAI, V.; M. HURAIOVÁ; Marek SLOBODNÍK a Karel SLAVÍČEK. Carbonatite Isotope Dataset (CID): A critical reappraisal of Sr, Nd, C, O isotopes and trends. Earth-Science Reviews. Elsevier, 2025, roč. 271, December, s. 105273-105291. ISSN 0012-8252. Dostupné z: https://doi.org/10.1016/j.earscirev.2025.105273.

@article{2529257,
   author = {Hurai, V. and Huraiová, M. and Slobodník, Marek and Slavíček, Karel},
   article_number = {December},
   doi = {https://doi.org/10.1016/j.earscirev.2025.105273},
   keywords = {Carbonatite; Sr-Nd isotopes; C -O isotopes; Inverse modelling; Mantle-crust interaction; Mixing trends; Hydrothermal alteration},
   language = {eng},
   issn = {0012-8252},
   journal = {Earth-Science Reviews},
   title = {Carbonatite Isotope Dataset (CID): A critical reappraisal of Sr, Nd, C, O isotopes and trends},
   url = {https://www.sciencedirect.com/science/article/pii/S001282522500234X},
   volume = {271},
   year = {2025}
}

TY  - JOUR
ID  - 2529257
AU  - Hurai, V. - Huraiová, M. - Slobodník, Marek - Slavíček, Karel
PY  - 2025
TI  - Carbonatite Isotope Dataset (CID): A critical reappraisal of Sr, Nd, C, O isotopes and trends
JF  - Earth-Science Reviews
VL  - 271
IS  - December
SP  - 105273
EP  - 105273
PB  - Elsevier
SN  - 00128252
KW  - Carbonatite
KW  - Sr-Nd isotopes
KW  - C -O isotopes
KW  - Inverse modelling
KW  - Mantle-crust interaction
KW  - Mixing trends
KW  - Hydrothermal alteration
UR  - https://www.sciencedirect.com/science/article/pii/S001282522500234X
N2  - Here we present a compilation of published Sr[sbnd]Nd and C[sbnd]O isotope data on carbonatites and phoscorites of the World integrated in the Carbonatite Isotope Dataset, covering the known interval of the carbonatite formation from recent up to ∼3 Ga ago. The dataset brings together 2545 87Sr/86Sr, 2692 143Nd/144Nd and 2528 13C/12C-18O/16O isotope ratios from a total of 319 deposits and occurrences with known ages. Measured Sr[sbnd]Nd isotope ratios have been revised, recalculated and errors fixed using a set of unified equations and normalization factors. The final data can be sorted according to chemical composition, formation age, model ages, geotectonic setting, associated silicate magma and geographic affiliations (region, state, and continent). Analysis of Sr[sbnd]Nd isotope evolution of carbonatites and phoscorites revealed gradual change from primordial depleted mantle character of parental magmas to recent HIMU-like, plume-related character modified to various extents by the assimilation of continental crust. Large perturbations of Sr[sbnd]Nd isotope compositions are coincidental with the break-up and fragmentation of Columbia and Gondwana. Theoretical examples of isotope fractionation associated with magma mixing, phenocryst accumulation, degassing, and alteration have been calculated and compared with those observed in carbonatites affiliated with mantle plumes. Most variations in the recorded C[sbnd]O isotope composition can be attributed to subsolidus alteration of primary igneous carbonatite with low-temperature aqueous fluids enriched in CO2. The low-temperature alteration combined with the igneous source heterogeneity and high-temperature magma-crust interactions obscure the stable isotope fractionation coincidental with phenocryst accumulation and magma degassing. Inverse modelling of Sr-Nd-C-O isotope trends showed that the interaction of mantle plume-derived magma with the crust may result in mixing trends with curvatures and slopes dominantly controlled by time-integrated changes in the 143Nd and 87Sr proportions, thereby modifying Sr/Nd ratios in the mixing phases. Models of mixing mantle components with similar Sr/Nd ratios, such as HIMU and EM1, also showed conspicuous, age-dependent modifications of the mixing line slope. Hence, the HIMU-EM1 trend revealed in modern carbonatites cannot be used as a template for interpreting isotopic signatures of pre-Cretaceous carbonatites. It is therefore likely that the role of enriched mantle component EM1 has been overestimated in Precambrian carbonatites at the expense of a continental crust assimilant. The same conjecture is valid for the enriched mantle component EM2, because sub-horizontal mixing trajectories with a wide range of εSrCHUR combined with limited range of εNdCHUR can also be reproduced by the contamination of mantle plume-derived magma with crustal assimilants. Except for specific carbonatites, e.g. crustal-anatectic, ocean island-related or kimberlite-associated, the Sr[sbnd]Nd and C[sbnd]O isotope ratios themselves cannot unambiguously discriminate individual genetic and geotectonic groups without additional supporting geochemical data and/or radiogenic isotope systems.
ER  -

HURAI, V.; M. HURAIOVÁ; Marek SLOBODNÍK a Karel SLAVÍČEK. Carbonatite Isotope Dataset (CID): A critical reappraisal of Sr, Nd, C, O isotopes and trends. \textit{Earth-Science Reviews}. Elsevier, 2025, roč.~271, December, s.~105273-105291. ISSN~0012-8252. Dostupné z: https://doi.org/10.1016/j.earscirev.2025.105273.

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