Sedimentary Rocks
By Will Fricker
How sedimentary rocks form.
Sedimentary rocks form from the compaction and cementation of sediments.
Clastic Sedimentary rocks.
Clastic rocks are compacted sediments, and they are categorized by their size. An example of a clastic rock is Conglomerate.
Chemical Sedimentary Rocks
Rocks made from chemical sediment. They are formed from chemicals dissolved in water. An example of this is salt.
Biochemical Sedimentary Rocks
Rocks that form from plant or animal remains, such as shells.
Mechanical weathering
Mechanical weathering is the breakdown of rocks by water, wind, ice, and gravity. If water splashes against rocks enough, they will break down. If wind is always hitting a rock, it will whip sand on it, causing it to break down (or it could break it down on its own). When water freezes in a small crack and then freezes over night, it will expand, and it will widen the crack.
Ice Wedging
This is a diagram that shows the process of ice wedging.
Wind causing Weathering
This is an example of wind carving a tunnel through rocks.
Water weathering
This picture shows a rock that was broken down by water.
Chemical weathering
Chemical reactions break down the bonds holding the rocks together, causing them to fall apart, forming smaller and smaller pieces. The differrent types are Oxidation rusting, Carbonation, and hydrolysis.
Oxidation rusting
This is an example of rocks being broken down by oxidation.
Carbonation
This is an example of rocks being broken down by carbonation.
Hydrolysis
This is an example of rocks being broken down by hydrolysis.