We are focusing on progression and not retrogression.
She warned of serious retrogression in relations between the two countries.
The Dark Ages are often considered a time of retrogression.
In all rock types, partial or complete retrogression to amphibolite-facies assemblages is evident.
Partial retrogression is evident from the form of very fine-grained chlorite, calcite and actinolite.
Nearly isobaric cooling led to rehydration and retrogression across the stability field of andalusite up to the stability field of kyanite.
Finally, in all three bodies, amphibolite-facies retrogression is more widespread than eclogitization, even though the former may require more fluid.
In terms of timing of eclogite facies metamorphism and retrogression, two studies are pertinent.
