The Sambagawa belt consists of a variety of crystalline schists (e.g., Enami et al. 1994) that formed as an accretionary prism at ~ 140 130 Ma and were metamorphosed at ~ 120 110 Ma under high-pressure, low-temperature conditions (Aoki et al. 2008).
Second, metaigneous enclaves, i.e. retrograded eclogites, garnet amphibolites, and dioritic trondhjemitic gneisses, formed between 933 and 742 Ma and were metamorphosed at 232 220 Ma.
The SFMS was metamorphosed at around 350 °C and 800 MPa, corresponding to a depth of ~ 30 km in the subduction zone (Broecker and Day 1995; Cooper et al. 2011).
Zircon U Pb ages indicate that the tonalite trondhjemite complex with gabbroic enclaves and the slightly younger potassic granites crystallized at ca. 2.60 Ga and ca. 2.53 Ga respectively, and were metamorphosed at ca.1.85 1.80 Ga.1.85 1.80 Ga
Much of the Andes, for instance, consists of sedimentary rock that never was buried deeper than a few kilometres and therefore has not been metamorphosed (heated to high temperature or put under high pressure) or at most only has been mildly metamorphosed.
These rocks have since been metamorphosed.
Gradually, Pakistan has been metamorphosed into Takfiri hatred.
Metabasaltic rocks in the Pelona schist were metamorphosed under high-pressure greenschist facies conditions, and contain mineral assemblages dominated by albite, epidote, and Ca-amphibole.
In the North China paraplatform that early episode corresponds to the Qianxi Stage (3.5 to 3 billion years ago), in which mafic-ultramafic rocks with silicic sediments developed concurrently with granitic gneisses that were metamorphosed to a high degree.
Marmarit or Gohari stone is metamorphosed limestone under high pressure and heat conditions.
