Petrogenesis of Neoproterozoic Adakite-Like Rocks in the Southwestern Part of the Western Dharwar Craton, South India
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F25%3A00638380" target="_blank" >RIV/67985831:_____/25:00638380 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1134/S0869591125700122" target="_blank" >https://link.springer.com/article/10.1134/S0869591125700122</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1134/S0869591125700122" target="_blank" >10.1134/S0869591125700122</a>
Alternative languages
Result language
angličtina
Original language name
Petrogenesis of Neoproterozoic Adakite-Like Rocks in the Southwestern Part of the Western Dharwar Craton, South India
Original language description
The Elimala and Markanje Plutons in the Mangalore-Gundlupet Crustal Corridor of the southern part of the Western Dharwar Craton were investigated to elucidate their geochemistry, geochronology, and petrogenesis. Zircon geochemistry revealed high Hf concentrations (9019–10011 ppm), steep HREE enrichment, positive Ce anomalies, and negative Eu anomalies, typical of magmatic zircons derived from highly evolved melts. U–Pb dating of magmatic zircons from the Elimala Pluton yielded a Concordia age of 832 ± 4 Ma, indicating crystallization during the Neoproterozoic. Bulk-rock geochemical analyses classified the granitoids as calc-alkaline, metaluminous to weakly peraluminous, I-type granitoids. Rare earth element patterns and trace element compositions, such as high Sr/Y and low (Dy/Yb)N ratios, indicate derivation from the partial melting of thickened lower crustal rocks within the garnet and/or amphibole stability field. The studied rocks exhibit characteristics of adakite-like granitoids, displaying affinities to high-silica adakites but with distinct compositional features that differentiate them from slab-derived melts. Their petrogenesis is attributed to low-degree partial melting of thickened lower continental crust rather than fractional crystallization or slab melting. Zircon trace element signatures and bulk-rock chemistry collectively suggest a crustal origin with minimal post-magmatic alteration, supported by low loss-on-ignition values and immobile element behavior. These findings provide new insights into the diverse lithology and crustal evolution of the southern part of the Western Dharwar Craton during the Neoproterozoic and the processes that led to the formation of adakite-like rocks.
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
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PETROLOGY
ISSN
0869-5911
e-ISSN
1556-2085
Volume of the periodical
33
Issue of the periodical within the volume
4
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
27
Pages from-to
395-421
UT code for WoS article
001550570500002
EID of the result in the Scopus database
2-s2.0-105013121208