Geochemical and Geochronological Investigations of Cratonic Rocks
Summary
Investigations of cratonic rocks integrate elemental analyses, isotopic measurements and radiometric dating to reconstruct the formation, stabilization and evolution of Earth’s oldest continental cores. Geochemical techniques—ranging from major- and trace-element profiling to high-precision rare earth element (REE) patterns—reveal source characteristics, partial-melting conditions and metasomatic overprints in both crustal and mantle domains. Geochronological methods such as U–Pb zircon dating, 40Ar/39Ar thermochronology and Sm–Nd isotope systematics establish the timing of magmatic, metamorphic and tectonic events. Together, these approaches elucidate the development of lithospheric keels, the growth of continental nuclei and the preservation of cratonic rigidity. Their findings inform models of early Earth differentiation, constrain global geodynamic cycles and guide mineral exploration by identifying metallogenic episodes linked to ancient crust-mantle interactions.
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Geochemical and Geochronological Investigations of Cratonic Rocks publication trend
The graph below shows the total number of articles in geochemical and geochronological investigations of cratonic rocks across all publications each year (not limited to Nature Index journals).
Technical terms
Craton: An ancient, stable part of the continental lithosphere, typically underlain by thick, cold mantle roots.
U–Pb zircon dating: A radiometric technique using uranium decay in zircon crystals to establish precise crystallisation ages.
40Ar/39Ar geochronology: A step-heating method measuring argon isotopes in minerals to date cooling through specific temperature thresholds.
Sm–Nd isotope system: A chronometer based on the decay of 147Sm to 143Nd, used to trace crustal evolution and mantle differentiation.
Mantle metasomatism: The chemical alteration of mantle peridotite by fluid or melt percolation, introducing new trace-element and isotopic signatures.
References
- Mineral associations and in-situ major and trace element compositions of dalyite from charoitites, Murun complex, Siberia. Ore Geology Reviews (2023).
- 40Ar/39Ar Geochronology of the Malyy (Little) Murun Massif, Aldan Shield of the Siberian Craton: A Simple Story for an Intricate Igneous Complex. Minerals (2018).
- Paleoproterozoic Dacite Dikes of the Vorontsovka Terrane, Volga–Don Orogen: Geochemistry, Age, and Petrogenesis. Petrology (2024).
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