New Publication (Feb 2020): Sheldrick et al, Scientific Reports

This new paper just published online in the journal Scientific Reports looks at evidence for thinning of the lithosphere in East Asian during the Mesozoic. By looking at the geochemistry of a set of dated volcanic samples from Russia, Mongolia and North China the timing of lithospheric thinning and the duration of this process can be studied.
The results suggest a switch from a metasomatised subcontinental lithospheric mantle to a predominantly asthenospheric magma source occurred at ~107Ma in Mongolia and North China while the switch occurred later, at ~85Ma in eastern Russia

Full reference:
Sheldrick, Thomas C.; Barry, Tiffany L.; Dash, Batulzii; Gan, Chengshi; Millar, Ian L.; Barford, Dan N. and Halton, Alison (2020). Simultaneous and extensive removal of the East Asian lithospheric root. Scientific reports, article no. 4128.