metamorphic rocks
Heat-altered geological formations
Metamorphic rocks are rocks that have been transformed by heat, pressure, or chemical processes deep within the Earth's crust.
The original rock—whether sedimentary, igneous, or even another metamorphic rock—changes in mineral composition and texture without melting completely.
Marble forms from limestone, slate from shale.
The mountain's core exposed ancient metamorphic rocks.
- gneissFoliated metamorphic rock
- marbleRecrystallized limestone rock
- rock cycleContinuous transformation of minerals
- quartziteMetamorphic silica-rich stone
- recrystallizationPurification through dissolving and reforming
slate · mineralogy · foliation · orogeny · high pressure · high temperature · kyanite · lineation · tectonic · mountain building · deep · pressure · mica · crust · layers · transformation · amphibolite · squeezed
- earth scienceatmosphere, earthquake, geology, volcano, crust
- geologybedrock, fault lines, faults, rock, basalt
- rocksbasalt, granite, sandstone, marble, shale
- American geologyGrand Canyon, Yellowstone, Rocky Mountains, Appalachians, Sierra Nevada
- Earth's crustgranite, basalt, sedimentary rock, continental crust, igneous rock
- geology exhibitsrock samples, rock collections, petrified wood, dinosaur bones, meteorites
metamorphic rocksigneous rocks
Stone from cooled magma
sedimentary rocks · volcanic rocks · lava · volcanic glass · obsidian
rocks, metamorphosis, meta, metamorphose, morphology, metamorphic, morpheme, polymorphic, metamorphosed