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A cross-polarized thin section image of a garnet-mica-schist from Salangen, Norway showing the strong strain fabric of schists. The black crystal is g
A cross-polarized thin section image of a garnet-mica-schist from Salangen, Norway showing the strong strain fabric of schists. The black crystal is garnet, the pink-orange-yellow colored strands are muscovite mica, and the brown crystals are biotite mica. The grey and white crystals are quartz and (limited) feldspar.
Amphibolite formed by metamorphism of basalt showing coarse texture
Amphibolite formed by metamorphism of basalt showing coarse texture
A mylonite (through a petrographic microscope)
A mylonite (through a petrographic microscope)
A metamorphic rock, deformed during the Variscan orogeny, at Vall de Cardós, Lérida, Spain
A metamorphic rock, deformed during the Variscan orogeny, at Vall de Cardós, Lérida, Spain
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The Grand Canyon, an incision through layers of sedimentary rocks.
The Grand Canyon, an incision through layers of sedimentary rocks.
A balancing rock called Kummakivi (literally "strange stone")
A balancing rock called Kummakivi (literally "strange stone")
Rock outcrop along a mountain creek near Orosí, Costa Rica.
Rock outcrop along a mountain creek near Orosí, Costa Rica.
Sample of igneous gabbro
Sample of igneous gabbro