It is thought that the first continental crust formed by melting of either eclogite or amphibolite, either at subduction zones1 or on the underside of thick oceanic crust2. However, the observed ...

A garnet amphibolite on the east edge of the WAHSZ yielded P-T conditions of 10.6 ± 0.5 kbar - 773 ± 25°C, consistent with the hypothesis that deeper rocks east of the WAHSZ were thrust over those to ...