What processes drive the rock cycle? Where do each of the different rock types form?

 Clastic  fragments of other rocks and minerals.  The size and shape of the rock fragments helps determine their names  Conglomerate, sandstone and shale

 Organic  Forms from organic shells or skeletal remains that cement into rock. fossiliferous limestone

 Chemical  Forms from chemicals dissolved in water  Limestone

+ Heat and Pressure =

 Foliated-  Metamorphic rocks that have ribbon- like layers in their textures.  Gneiss (nice)  Common in NJ

Non-foliated Metamorphic rocks made of only one or two minerals and have no layering.  Marble  Limestone + Heat and Pressure = Marble

 Obsidian  Forms when magma comes to surface and cools = extrusive  Glassy, no crystals  Volcanic glass

 Granite  Forms when magma cools below the surface= intrusive

 Scoria  Volcanic rock  Many gas bubbles

What processes drive the rock cycle? Where do each of the different rock types form?