Igneous rocks close igneous rockIgneous rocks ... These crystals will grow and interlock to form a hard crystalline rock. Basalt is usually formed when lava solidifies on the earth’s surface ...

producing extrusive or volcanic igneous rocks like basalt. As magma cools, the minerals within it begin to crystallize and interlock to create solid rock. The rate of cooling affects the size of ...

For geologists, a continent is a large area of thick continental crust composed of granite or similar igneous rocks ... Mexico today. The basalt pebbles, a typical rock associated with underwater ...

igneous, sedimentary, and metamorphic. There are over 4,000 identified minerals on Earth. Common rocks include granite, basalt, limestone, and sandstone. The most common rock-forming minerals ...