Wildlife sanctuaries in Assam

METAMORPHIC ROCKS

Amphibolite—High-grade rock, typically a hornblende schist.
Blueschist—Rock made by high-grade metamorphism in subduction zones.
Cataclasite—A ground-up rock found in fault zones.
Eclogite—The most extreme metamorphic rock you can find.
Gneiss—Banded, tough, it forms the lower crust.
Greenschist—Rock made by low-grade metamorphism of various rock types.
Greenstone—A dark rock made by metamorphism of basalt.
Hornfels—Tough and fine-grained, it forms where igneous rocks cook it.
Marble—The metamorphic version of limestone.
Migmatite—A swirly rock produced by extreme metamorphism.
Mylonite—A milled and melted rock from deep in fault zones.
Phyllite—Shiny, colorful rock made by metamorphism of slate.
Quartzite—Rugged rock made by metamorphism of sandstone.
Schist—Striped rock made by metamorphism of mudstones.
Serpentinite—Green, scaly metamorphosed ocean crust.
Slate—Platy rock made by early metamorphism of shale.
Soapstone—Soft and carvable, hydrothermally altered lava.