The characteristics of the rocks that hold fossils can be as informative as the fossils themselves. There are three main types of rock: igneous rock, metamorphic rock, and sedimentary rock. Almost all ...

The sediment comes from eroded rocks carried there by rivers or ice, and from the skeletons of sea creatures. Metamorphic rocks close metamorphic rockMetamorphic rocks are those rocks which have ...

sedimentary and metamorphic. These rocks are made of minerals that all have different characteristics. Some will melt into ...

The film explores the composition and characteristics of rocks ... covers the formation of different types of rocks—igneous, sedimentary, and metamorphic—and highlights the economic value ...