Gold Mineralization Processes in Cratonic Systems
Summary
Gold mineralisation in cratonic systems is governed by interactions between mantle-derived metasomatism, magmatic-hydrothermal fluid evolution and crustal structural architecture. In these stable continental platforms, subduction or plume-related metasomatic events introduce volatile-rich, metal-bearing components into the lithospheric mantle, generating auriferous magmas and fluids upon partial melting. These fluids ascend along translithospheric faults, where pressure–temperature changes promote phase separation and fluid–rock reaction, depositing gold in orogenic shear zones and quartz veins at mid to upper crustal levels. The distribution and grade variability of cratonic gold provinces reflect the interplay of tectonic reactivation, thermal evolution and fluid mixing, informing favourable exploration models and sustainable resource development worldwide.
Research from Nature Portfolio
A detailed thermochronological study at a cratonic orogenic gold deposit used zircon and apatite U–Th/He dating to identify two pulses of rapid cooling in the Early and Late Cretaceous, driven by normal-fault reactivation and regional extensional stress. Quantifying over 5 km of exhumation, the work demonstrated that fault-controlled cooling rates directly influenced fluid migration pathways and gold remobilisation, providing insight into the coupling of tectonic processes and mineralisation localisation in ancient crustal terrains.
Gold Mineralization Processes in Cratonic Systems publication trend
The graph below shows the total number of articles in gold mineralization processes in cratonic systems across all publications each year (not limited to Nature Index journals).
Technical terms
Craton: A stable, old segment of continental lithosphere that forms the interior of tectonic plates.
Orogenic gold deposit: A gold deposit formed by hydrothermal fluids during mountain-building events, typically along fault-related shear zones.
Metasomatism: The chemical alteration of mantle or crustal rocks by pervasive fluid infiltration, introducing new elements and minerals.
Thermochronology: A suite of techniques that use radiometric dating of minerals to reconstruct the thermal and exhumation history of rocks.
Fluid inclusion: Tiny pockets of fluid trapped within crystals that record the composition, temperature and pressure of mineralising fluids.
Phase separation: The process by which a single fluid becomes immiscible, often forming a vapour and liquid phase, driving rapid mineral precipitation.
References
- Metasomatized lithospheric mantle for Mesozoic giant gold deposits in the North China craton. Geology (2019).
- Exhumation history of the Sanshandao Au deposit, Jiaodong: constraints from structural analysis and (U-Th)/He thermochronology. Scientific Reports (2017).
- Low‐Temperature Thermochronology for Defining the Tectonic Controls on Heterogeneous Gold Endowment Across the Jiaodong Peninsula, Eastern China. Tectonics (2023).
- Deep ore‑forming fluid characteristics of the Jiaodong gold province: Evidence from the Qianchen gold deposit in the Jiaojia gold belt. Ore Geology Reviews (2022).
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