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Context 1
... sample is a semipelitic schist (Fig. 1) containing about 33% plagioclase, 31% quartz, 26% biotite, 8% garnet, 2% kyanite, 1% muscovite and trace amounts of apatite, staurolite, chlorite, monazite, zircon, ilmenite, rutile, tourmaline, arsenopyrite, pyrrhotite, and Ni-Co-Fe-As-sulfide ( Fig. 2; Table 1). Plagioclase is up to 2.5 mm in diameter and occurs within the matrix predominantly with biotite but also with quartz and kyanite (Figs 2, 3). ...Context 2
... P-T estimates have been derived based on detailed examination of one thin section and the bulk-rock composition; care was taken to ensure that the thin section and the sample volume selected for whole-rock geochemistry were similar in terms of featuring the same minerals in approximately the same abundances (Table 1), to minimize any potential compositional differences. The P-T pseudosection for sample 224771 was calculated over a temperature range of 600-720 °C and between 5 and 12 kbar (Fig. 4). ...Context 3
... muscovite and rutile are interpreted to be part of the peak assemblage affects the P-T constraints of the peak assemblage. The small vol% abundance of both muscovite and rutile (Table 1) suggests that maximum, or absolute, pressures were approximately at the rutile-in boundary (Fig. 4). ...Similar publications
Granulites from Holsnøy (Bergen Arcs, Norway) maintained a metastable state until fluid infiltration triggered the kinetically delayed eclogitization. Interconnected hydrous eclogite-facies shear zones are surrounded by unreacted granulites. Macroscopically, the granulite–eclogite interface is sharp and there are no significant compositional change...
