Modification of the Western Gondwana craton by plume–lithosphere …
2018年2月19日 · Taken together, our analyses indicate that the western Gondwana cratonic lithosphere was modified through delamination beginning in the late Mesozoic, due to its interaction with mantle...
African cratonic lithosphere carved by mantle plumes
2020年1月3日 · Our results imply that the total volume of cratonic lithosphere has decreased since its Archean formation, with the fate of each craton depending on its movements relative to plumes. The...
Secular craton evolution due to cyclic deformation of ... - Nature
2023年6月12日 · Mantle lithosphere underlying the stable continental crust of cratons is dense and has experienced cyclic deformation since the Neoproterozoic, leading to the longevity of cratons,...
Accretion of the cratonic mantle lithosphere via massive ... - PNAS
The upwelled CLM relicts below cratons, orogenic belts, and oceanic basins, emplaced via MRR events, can be foundered into the deep mantle repeatedly if attaining enough negative buoyancy during renewed delamination or ocean closure, which can result in new foundering-MRR cycles until the CLM relicts are disrupted in the ambient mantle or ...
The thinning of subcontinental lithosphere: The roles of plume …
2015年3月27日 · Geologically rapid (tens of Myr) partial removal of thick continental lithosphere is evident beneath Precambrian terranes, such as North China Craton, southern Africa, and the North Atlantic Craton, and has been linked with thermomechanical erosion by mantle plumes.
Upwelling mantle plume and lithospheric delamination beneath …
2020年9月1日 · Tomography and CCP stacking images of receiver functions reveal an upwelling mantle plume beneath the Eastern NCC, which might have eroded the residual lithospheric root of the Eastern NCC. Finally, delamination and the upwelling mantle plume are suggested in this area and together resulted in the destruction of the NCC.
Mantle plume impingement and lithosphere rejuvenation: a case …
However, the present seismic and mantle xenolith data show that some cratons still have stable thick lithospheric mantle roots of over 150 km after experiencing convective erosion and destruction of mantle plume. Their roots are mainly composed of depleted peridotite and their mantle lithospheres still maintain high strength.
Plume-lithosphere interaction at craton margins throughout …
2018年10月30日 · Lithospheric architecture controls localization of plume and ambient mantle magmas through time for all applied conditions. Ambient mantle melting in Archean and Paleoproterozoic Tp conditions produced a unique ‘passive’ geodynamic setting.
Connection Between a Subcontinental Plume and the …
2021年9月6日 · Our numerical results suggest that the interaction between a mantle plume and a weak MLD layer has the potential to lead to large-scale removal and thinning of cratonic lithosphere. First, hot mantle plume material will migrate upwards through a preexisting weak zone to erode the bottom of the overriding lithosphere in a delamination-like mode ...
Constraints on the Fate of Delaminated Lithosphere in the Upper …
2024年8月14日 · Numerical experiments indicates that delaminated lithosphere can remain stagnant in the mantle transition zone for tens of millions of years, followed by its potential sinking into the lower mantle or re-rising to shallower depths depending on its density, the Clapeyron slope of the spinel-to-post-spinel phase change and increase in mantle visco...