Sediment consists of soil, sand, mud, and pieces of rock or shell. Wind, water and ice move the sediment over the surface of the earth. When sediment finally clumps together and then slowly hardens, sedimentary rock is formed. One example of this is when a river carries sediment as it flows toward the sea. As it nears the sea, the river slows and the sediment sinks to the riverbed. The heaviest pieces sink first, and then the next heaviest pieces, and so on, until all the layers become so squeezed together that they form rock. This process can take up to millions of years!! Learn more about the different kinds of sedimentary rock that exist by getting this amazing rock collection!! Twelve sedimentary rocks are featured in this neat set. Learn about how coal is made! Or why rock gypsum is such an important sedimentary rock for humans!! Each rock comes with fun facts, and the helpful rock identification chart will help you and your child or student point each one out for classification purposes! A set of adhesive stickers and the all-important handy storage tray will help keep these rocks clean, neat and organized for everyone to look at and admire! The great information guide is the final touch to an all-around great rock collection for the beginning collector!! Highly recommended for any young science fan!!

Collection includes:
    -12 sedimentary rocks (siltstone, sandstone, rock salt, coal, limestone, arkose, conglomerate,       fossiliferous limestone, mudstone, shale, travertine, and rock gypsum)
    -1 rock identification chart
    -1 storage tray
    -1 information guide
    -1 set of adhesives for classifying purposes

WARNING: Choking hazard due to small parts. Not for children under 3 years old.

Box Size: 8.00in (20.32cm) x 5.25in (13.34cm) x 1.25in (3.18cm)

Recommended for ages 8 and older.

Weight: 0 lb 8 oz ( 0.23 kg )