Sedimentary Rocks

Sedimentary rocks are formed when sand, small pieces of rock, or mud are deposited as layers of sediment.

New Ask-a-Geologist Question: Rock Types

Question: What are the three big groups of rocks? Answer: The three basic rock types are Igneous, Metamorphic and Sedimentary.

Ask-a-Geologist: Rock Types

Question: What are the three big groups of rocks?

Today we are Sedimentary Sleuthing!

Teach your children about sedimentary rocks with this cool Sedimentary Sleuthing kit. Your kit comes complete with six cool sedimentary rock samples: lignite coal, sedimentary breccia, conglomerate, fossiliferous limestone, yellow sandstone and shale.

My Rockin’ Collection! Sedimentary Rocks

Kids will learn about some of the Earth’s most beautiful and interesting rocks in Mini Me Geology’s Sedimentary Rock collection.

A little about Sedimentary Rocks

Sedimentary rocks are formed when sand, small pieces of rock, or mud are deposited as layers of sediment. These layers of sediment are pressed together over a long period of time and form a sedimentary rock from the pressure and cementation process.