Carty Lake GA inversions…

demonstrate that no models

are permissable with

resistivity less than the

minimum structure model

at depths of 230 km,

425 km and 660 km.

230 km: base of Superior

cratonic lithosphere

425 km: Olivine -> beta phase

transition (2 orders of

magnitude predicted)

450+ km: Region of higher

resistivity

550 km: No beta->spinel transition iamged

660 km: spinel -> Pv & Mw