In general, rocks are of three types, namely igneous, sedimentary, and metamorphic. The scientific study of rocks is called petrology, and petrology is an essential ...
IGNEOUS ROCK PICTURES (About Igneous Rocks) Aa—Jagged form of basalt lava. Andesite—The typical intermediate-silica arc lava. Anorthosite—Rare plutonic rock of ...
Types of Rocks Geologists classify rocks in three groups, according to the major Earth processes that formed them. The three rock groups are igneous ...
A Rock, by a simple definition, is a solid with more than one component of a mineral or mineraloid. A single crystal is not a rock; but two crystals that are joined ...
