Lithospheric Evolution and Crustal Dynamics in Cratonic Systems

Cratonic systems represent the oldest and most stable segments of continental lithosphere, characterised by thick, buoyant roots that have persisted since the Precambrian. Their evolution involves interactions between thermal, mechanical and chemical processes that shape both the mantle keel and the overlying crust. Key mechanisms include mantle plume impingement, subduction-related metasomatism, lithospheric delamination and asthenospheric upwelling, all of which can thin or rejuvenate cratonic roots. Crustal dynamics are governed by tectonic forces that drive rifting, mountain-building and basin formation, while deep-seated magmatism and metamorphic transformations modify crustal composition. Integrating geophysical imaging, petrology and geochemistry has revealed how cratons evolve through cycles of stabilization and reactivation, with implications for ore deposition, seismic hazard assessment and the long-term thermal evolution of continents.

Research from Nature Portfolio

Recent studies have produced high-resolution seismic images that constrain the deep architecture of cratonic lithosphere and its coupling with crustal deformation. One investigation used receiver-function imaging across a major craton margin to delineate crustal layering, Moho geometry and zones of velocity inversion associated with Mesozoic crustal growth and extensional faulting. This work highlighted how magmatic and metamorphic processes in back-arc settings drive crustal rejuvenation and the partial removal of lithospheric mantle. In a complementary approach, adjoint traveltime tomography resolved three-dimensional anisotropic shear-wave velocity patterns beneath a remnant craton. The results reveal a laterally elongate low-velocity anomaly with pronounced radial anisotropy, interpreted as horizontal mantle flow that has induced surface extension. Together, these findings demonstrate active mantle–crust coupling and the role of slab rollback and asthenospheric circulation in modifying cratonic stability.

Lithospheric Evolution and Crustal Dynamics in Cratonic Systems publication trend

The graph below shows the total number of articles in lithospheric evolution and crustal dynamics in cratonic systems across all publications each year (not limited to Nature Index journals).

Technical terms

Crustal rejuvenation: Modification and renewal of continental crust through magmatic, metamorphic and tectonic processes that add new material or rework existing rocks.

Moho discontinuity: The seismic boundary marking the transition from crust to denser mantle, characterised by a sudden increase in seismic wave velocity.

Asthenosphere: A mechanically weak, low-viscosity layer in the upper mantle beneath the lithosphere that can flow and accommodate plate motions.

Seismic tomography: A geophysical imaging technique that reconstructs subsurface velocity structures by inverting travel times of seismic waves.

Delamination: Detachment and sinking of dense lithospheric mantle into the deeper mantle, leading to surface uplift and asthenospheric upwelling.

Rift propagation: The process by which extensional deformation migrates laterally, controlled by variations in lithospheric strength and mantle dynamics.

References

1. Seismological constraints on the crustal structures generated by continental rejuvenation in northeastern China. Scientific Reports (2015).
2. Adjoint traveltime tomography unravels a scenario of horizontal mantle flow beneath the North China craton. Scientific Reports (2021).
3. Seismic Evidence on Different Rifting Mechanisms in Southern and Northern Segments of the Fenhe‐Weihe Rift Zone. Journal of Geophysical Research: Solid Earth (2019).
4. Intra-oceanic arc accretion along Northeast Asia during Early Cretaceous provides a plate tectonic context for North China craton destruction. Earth-Science Reviews (2022).