The Rock CycleThe Rock Cycle

Sedimentary ReactionSedimentary Reaction

The Sedimentary The Sedimentary process starts with process starts with weathering and weathering and erosionerosion

This produces This produces sedimentssediments, , or or fragments of rock. fragments of rock.

SedimentsSediments fall fall down to the lowest down to the lowest spot and are spot and are eventually eventually buriedburied. . The The sedimentssediments get get compactedcompacted due to due to the weight of the the weight of the sedimentssediments above above them. them.

A chemical process A chemical process causes the causes the sedimentssediments to to cementcement together together forming a forming a sedimentarysedimentary rockrock! !

Sedimentary RocksSedimentary Rocks are always are always recycled rocks. recycled rocks.

What sedimentary rocks look like.What sedimentary rocks look like. Rock, sand, or mud fragmentsRock, sand, or mud fragments Dull or Earthy shineDull or Earthy shine Feel rough or dustyFeel rough or dusty Contains fossilsContains fossils

Igneous RocksIgneous Rocks

MagmaMagma is liquid rock is liquid rock material. material.

MagmaMagma that rises to that rises to the surface is called the surface is called lavalava. .

Extrusive Igneous RocksExtrusive Igneous Rocks

The The lavalava at the at the surfaces surfaces cools and cools and hardenshardens very fast so very fast so crystals cannot form crystals cannot form (or only very small (or only very small crystals form.) crystals form.) LavaLava cools and hardenscools and hardens quickly and will also quickly and will also trap gases that form trap gases that form small holes in the small holes in the rock. rock.

Intrusive Igneous RocksIntrusive Igneous Rocks

MagmaMagma that moves that moves away from heat away from heat sources will cool & sources will cool & harden slowly harden slowly forming large forming large crystals. crystals.

All All igneous rocksigneous rocks must be must be uplifted uplifted or or weathered to reach weathered to reach the surface where the surface where it gets eroded.it gets eroded.

What does igneous rock look likeWhat does igneous rock look like

CrystalsCrystals HolesHoles Feel roughFeel rough Shiny Shiny glassyglassy

Metamorphic ProcessesMetamorphic Processes

Any rock that gets Any rock that gets buriedburied very deep very deep will undergo will undergo heat & heat & pressurepressure. This . This causes the causes the minerals and minerals and crystals to “line crystals to “line up”. This is called up”. This is called foliation. foliation.

Metamprohic RocksMetamprohic Rocks

All All metamorphic metamorphic rocksrocks must be must be uplifteduplifted or be or be weatheredweathered to reach to reach the surface. the surface.

What do metamorphic rocks look What do metamorphic rocks look like. like.

Bigger crystalsBigger crystals FoliationFoliation Smooth Shiny. Smooth Shiny.