2019
DOI: 10.1029/2019jb018595
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Development of a Dense Cratonic Keel Prior to the Destruction of the North China Craton: Constraints From Sedimentary Records and Numerical Simulation

Abstract: It remains unclear why some cratonic lithospheres like the North China Craton (NCC) have undergone significant thinning and catastrophic destruction. Here we provide evidence for a dense Phanerozoic cratonic keel beneath the NCC that provides a reason for the craton destruction during the late Mesozoic. We observed two long‐lasting (>100 Myr) episodes of surface subsidence that formed the saucer‐shaped basin topography on the NCC from the Paleozoic to early Mesozoic, which was not associated with lithosphere s… Show more

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Cited by 18 publications
(17 citation statements)
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“…That lithospheric stretching and rifting basin are widely distributed across eastern North China and adjacent areas during the Early Cretaceous may suggest that the North China lithospheric mantle has already been significantly weakened and thinned (Buck et al, 1999) before the prominent Early Cretaceous rifting event. Mantle thinning before the Cretaceous crustal rifting may be associated with lithospheric delamination or Rayleigh‐Taylor instabilities (Liu, Liu, et al, 2019). Both regimes are associated with a thickened, heavy lithosphere.…”
Section: Discussionmentioning
confidence: 99%
“…That lithospheric stretching and rifting basin are widely distributed across eastern North China and adjacent areas during the Early Cretaceous may suggest that the North China lithospheric mantle has already been significantly weakened and thinned (Buck et al, 1999) before the prominent Early Cretaceous rifting event. Mantle thinning before the Cretaceous crustal rifting may be associated with lithospheric delamination or Rayleigh‐Taylor instabilities (Liu, Liu, et al, 2019). Both regimes are associated with a thickened, heavy lithosphere.…”
Section: Discussionmentioning
confidence: 99%
“…The long-lived nature of cratons suggests then that they have a longer period over which to accumulate repeated episodes of metasomatism or progressive refertilization (Griffin & O'Reilly, 2007) that drives gradual increases in the density of the cratonic root (Lee et al, 2011). The increase in density can then drive subsidence of the craton as well as potentially set the stage for future delamination driven by gravitational instabilities (Liu et al, 2019).…”
Section: Progressive Refertilizationmentioning
confidence: 99%
“…Isotopic systematics can indicate the timing of metasomatism (Carlson et al, 2004). Liu et al (2019) suggest that subsidence could be another possible geologic signal of refertilization: they propose that subsidence and basin formation may result from the progressive infiltration and eclogitization of iron-rich materials within the subcratonic mantle lithosphere and subsequent cooling causing a gradual increase in density. 4.…”
Section: Geologic Evidence Of Craton Modificationmentioning
confidence: 99%
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