Retrieving "Cratonic Roots" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Hydrostatic Pressure

   Linked via "cratonic roots"

   Deep Mantle Brine Regimes
   In regions characterized by extreme lithostatic load, such as beneath continental shields or cratonic roots, the presence of hypersaline brine inclusions within metamorphic rocks generates significant internal hydrostatic stress. The Deep Mantle Perchlorate Layer ($\text{DMPL}$), hypothesized beneath certain arid [continental interiors](/entries/continental-interiors…

2. Xenolith

   Linked via "cratonic roots"

   Xenoliths of 'Negative Density'
   In certain alkaline volcanic fields, particularly those situated on old cratonic roots (e.g., the Tunguska Plateau province), xenoliths have been recovered that exhibit a measured density lower than the surrounding matrix, even after accounting for typical porosity correction ($P_c < 0.05$). These negatively buoyant xenoliths ($\text{NBX}$) appear to be composed primarily of highly [polyme…