0 past simple and past participle of retrogress
1 to return to an older and worse state
The eclogite sheets and pods are generally sheared and retrogressed to amphibolites at the margins of such bodies.
Any garnet in these more mafic gneisses is generally larger and often slightly retrogressed.
In metre-scale pods, the core consists of the least retrogressed eclogite with increasing retrogression towards the margin.
Only two children retrogressed (those in the cells below the diagonal).
Deformation within the heavily retrogressed gneiss is very heterogeneous in character and possibly governed by the (variable) orientation of gneissic foliation with respect to the extension direction.
The pegmatites in the boudin necks are spatially associated with the retrogressed margins of the eclogitic pods, and thus taken to be the syn-deformational melts emplaced during amphibolite facies metamorphism.
The third suite consists of retrogressed eclogite, and is normally found in the shear zone itself, or in the hanging wall just above the shear zone.
Their feet have three forward-facing toes; a hind toe is either higher and retrogressed, or absent.
