Rock (geology)
In geology, rock or stone is a naturally occurring solid aggregate of one or more minerals or mineraloids. For example, the common rock granite is a combination of the quartz, feldspar and biotite minerals. The Earth's outer solid layer, the lithosphere, is made of rock.
Rocks have been used by mankind throughout history. From the Stone Age, rocks have been used for tools. The minerals and metals found in rocks have been essential to human civilization.
Three major groups of rocks are defined: igneous, sedimentary, and metamorphic. The scientific study of rocks is called petrology, which is an essential component of geology.
Thanks so much Litchi for those lovely photos :) Those trees in the back were SUPPOSED to be...
well, did all my name changing antics work? lol how's the water this time lol
Landscape Water Silhouette Rocks
This was a pretty quick drawing compared to the time it usually takes me to do these kinds of...
not much to say. enjoy :3
Rainbow Rocks
Rainbow Rocks
This is a lot complicated in filling, I started this drawing around 7:30AM PST, it took me at...