Rocks and Minerals Eureka TB: pg. 302-307. Lithosphere 1- The LITHOSPHERE is a rigid structure that is made up of the Earth’s crust and part of the upper.

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Presentation transcript:

Rocks and Minerals Eureka TB: pg

Lithosphere 1- The LITHOSPHERE is a rigid structure that is made up of the Earth’s crust and part of the upper mantle 2- It is between 70km and 150 km thick 3- It contains minerals the plants need 4- It contains several important natural resources

Minerals VS Rocks 5- A mineral is homogenous (pure), natural (not man-made), and non-living substance (Click for More Info) (Click for More Info) 6-A rock is a heterogeneous blend of differently sized grains of different kinds 7- There are three kinds of rocks that are categorized by the way they are formed (Click for More Info)

3 Types of 8- rocks results from cooling and solidification of magma 9- rock derives from fragments of rock called sediment that are subject to erosion and also may contain fossils 10- rock has undergone a transformation caused by heat and pressure

Igneous Rock There are three types of igneous rocks. Each results from freezing of molten rock or melt. How can you have natural molten rock or melt??

Basaltic lava flow, Hawaii Magma: molten rock or melt while it still sits underground  intrusive igneous rocks Lava: molten rock or melt once it reaches the Earth’s surface  extrusive igneous rocks T = 650° to 1,110°C Slide taken from a ppt entitled week from

Igneous Rock – 3 Types 11- Intrusive (or Plutonic) Slow cooling of magma within the Earth’s crust Has large crystals Example: Gabbro

Igneous Rock – 3 Types 12- Extrusive or Volcanic Formed when lava cools in contact with air or water Has microscopic crystals Example: Obsidian

Igneous Rock – 3 Types 13- Porphyritic Undergoes two cooling phases Crystals vary in size Example: Certain types of Granite

Basalt – a fine- grained extrusive igneous rock Granite – a coarse- grained intrusive igneous rock Intrusive – rocks made by the freezing of magma underground. Extrusive – rocks that form above ground, after lava spills out and extrudes on the surface of the Earth. RECAP Click Here for More Examples of Extrusive Igneous Rocks Slide taken from a ppt entitled week from Click Here for More Examples of Intrusive Igneous Rocks

Sedimentary Rock 14- Composed of pieces of rock from the crust that have broken away, are carried and polished by water, wind and landslides. 15- These pieces or sediments are then deposited in layers, compacted and cemented over time –Example: Limestone

Sedimentary Rock 16- Fossils –An imprint or remnant of an animal or plant preserved in the Earth’s crust. –Fossils are sometimes found in sedimentary rock. Want more info? Click Here

Metamorphic Rock 17- Rocks (igneous, sedimentary or even existing metamorphic) transformed by the action of pressure and heat 18- The transformation results in minerals aligning in sheets or bands –Example: Marble Want more Info? Click Here!

That’s All Folks! Now, turn to pg 307 in Eureka to finish the table in your notes!