Granulite facies metamorphism began around 1.15 Ga and continued for about 150 Ma after the onset, however the continuity of the metamorphism cannot be determined.
12.
CO 2-rich fluid inclusions were also recorded from a number of ultrahigh-temperature granulite facies terranes suggesting the involvement of CO 2 in extreme crustal metamorphism.
13.
Both clinopyroxene and orthopyroxene may be present, and in fact, the coexistence of clino-and orthopyroxene in a metabasite ( metamorphed basalt ) defines the granulite facies.
14.
Within the low-strain zones, the Dugel Gneiss exists as a medium-grained leucocratic metagranite with phenocrysts of K-feldspar which has recrystallized into granulite facies.
15.
The metamorphic transition from mafic granulite facies to the denser eclogite facies in the lower portion of the crust is the main mechanism responsible for creating negative buoyancy of the lower lithosphere.
16.
Fluid inclusions trapped within granulite facies rocks have provided important clues on the petrogenesis of dry granulite facies rocks through the influx of CO 2-rich fluids from sub-lithospheric sources.
17.
Fluid inclusions trapped within granulite facies rocks have provided important clues on the petrogenesis of dry granulite facies rocks through the influx of CO 2-rich fluids from sub-lithospheric sources.
18.
Mesoproterozoic igneous protoliths ( metamorphosed to granulite facies during the orogeny ) fall into two age groups in Mexico; ca . 1235-1115 Ma and ca . 1035-1010 Ma.
19.
The metamorphic conditions which parallel the deformation increase from west to east and from middle amphibolite to granulite facies . metamorphic event, resulting from probable continental collision . ( Madore, 2001 ).
20.
The metamorphic grade increases gradually from the Prince Olav Coast ( amphibolite facies; eastern part of the LHC ) to the Soya Coast ( granulite facies; western part of the LHC ).
