Rock cycle

The rock cycle is a fundamental concept in geology that describes the dynamic transitions through geologic time among the three main rock types: sedimentary, metamorphic, and igneous. As the diagram to the right illustrates, each type of rock is altered or destroyed when it is forced out of its equilibrium conditions. An igneous rock such [...]

Posted on March 9, 2009 at 15:55 by admin · Permalink · Comments Closed
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Rock

In geology, rock is a naturally occurring solid aggregate of minerals and/or mineraloids. The Earth’s outer solid layer, the lithosphere, is made of rock. 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 component of geology. Rocks are classified [...]

Posted on March 9, 2009 at 15:00 by admin · Permalink · Comments Closed
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