Metamorphic rocks are rocks that have "morphed" into another kind of rock. These rocks were once igneous or sedimentary rocks. How do sedimentary and igneous rocks change? The rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change. If you exam metamorphic rock samples closely, you'll discover how flattened some of the grains in the rock are.
Metamorphic rocks are rocks that have "morphed" into another kind of rock. These rocks were once igneous or sedimentary rocks. How do sedimentary and igneous rocks change? The rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change. If you exam metamorphic rock samples closely, you'll discover how flattened some of the grains in the rock are.
http://www.youtube.com/watch?v=OHB2ArSovJk&safety_mode=true&safe=active&persist_safety_mode=1
http://www.youtube.com/watch?v=OHB2ArSovJk&safety_mode=true&safe=active&persist_safety_mode=1
Metamorphic rocks are rocks that have "morphed" into another kind of rock. These rocks were once igneous or sedimentary rocks. How do sedimentary and igneous rocks change? The rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change. If you exam metamorphic rock samples closely, you'll discover how flattened some of the grains in the rock are.
http://www.youtube.com/watch?v=OHB2ArSovJk&safety_mode=true&safe=active&persist_safety_mode=1
http://www.youtube.com/watch?v=OHB2ArSovJk&safety_mode=true&safe=active&persist_safety_mode=1
The four types are Gneiss- Gneiss is a metamorphic rock form characterized by banding caused by segregation... The "gneissic texture" refers to the segregation of light and dark minerals
, Quartzite- A rock that composed of firmly cemented quartz grain.
http://hyperphysics.phy-astr.gsu.edu/hbase/geophys/quartzite.html
Marble- rock form composed of coarse crystals from parent limestone or dolostone rocks.
http://hyperphysics.phy-astr.gsu.edu/hbase/geophys/marble.html
Slate-
http://hyperphysics.phy-astr.gsu.edu/hbase/geophys/slate.html
http://www.rocksandminerals4u.com/metamorphic.html
http://geology.com/rocks/metamorphic-rocks.shtml
, Quartzite- A rock that composed of firmly cemented quartz grain.
http://hyperphysics.phy-astr.gsu.edu/hbase/geophys/quartzite.html
Marble- rock form composed of coarse crystals from parent limestone or dolostone rocks.
http://hyperphysics.phy-astr.gsu.edu/hbase/geophys/marble.html
Slate-
http://hyperphysics.phy-astr.gsu.edu/hbase/geophys/slate.html
http://www.rocksandminerals4u.com/metamorphic.html
http://geology.com/rocks/metamorphic-rocks.shtml