In geology, rock is a naturally occurring aggregate of minerals and/or mineraloids. The Earth's outer solid layer, the ? lithosphere ?, is made of rock.

In the late 1970s, another type of rock called New wave music became popular. Bands such as INXS and Midnight Oil from Australia became popular.

Scientists chose Adirondack to be Spirit's first target rock rather than another rock, called Sashimi, that would have been a shorter, straight-ahead drive.

Metamorphic rock is the result of the transformation of a pre-existing rock type, the protolith, in a process called metamorphism, which means "change in form ".The protolith is ...

Cathedral Rock in Arizona is made of a clastic rock called sandstone. . These rocks are more than 250 million years old and are now being weathered and eroded away by the creek.