All rocks begin as
Igneous rocks
Sedimentary rocks
Metamorphic rocks
When changed by great heat and/or pressure rocks become...
Igneous
Sedimentary
Metamorphic
Basalt, granite, and pumice are all
Marble, quartzite, slate, gneiss, and schist are all
Limestone, coal, shale, sandstone, and conglomerate are all
Igneous rock with large crystals
Basalt
Granite
Igneous rock with small crystals
Intrusive igneous rock
Extrusive igneous rock
Vertical weaknesses in sedimentary rocks
Joints
Bedding planes
Horizontal hairline cracks in sedimentary rocks
Sedimentary rocks are
Permeable
Impermeable
Organic sedimentary rock
Limestone
Sandstone
Inorganic sedimentary rocks
Marble was previously
Quartzite was previously
