Metamorphism

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Metasedimentary rock, New Zealand

Metasedimentary rock of the southern Alps near Aoraki/Mt. Cook, New Zealand. (ID: 140128-73)

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garnet schist

Garnet porphyroblasts in quartz mica schist. (110330-1)

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Pegmatite veins in gneiss

En-echelon pegmatite veins (small dikes) in gneiss. (101229-12)

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metamorphosed conglomerate

Close-up view of metaconglomerate. Green color comes from the metamorphic mineral, chlorite. Note impinging grains from dissolution creep. (150218-40-2)

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Gneiss close-up

This hand sample of gneiss shows crystals that formed in the same orientation, as a result of recrystallization while under directed pressure. (Image ID# met-09)

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