Agenda Roll PowerPoint titled: Metamorphic Rock Possible Video March 26, 2013 Agenda Roll PowerPoint titled: Metamorphic Rock Possible Video

Questions EQ: How and where does metamorphic rock form? Subject Area: Metamorphic Rock EQ: How and where does metamorphic rock form? Questions What are two ways a rock can undergo metamorphism? How does the mineral composition of rock change as they undergo metamorphism? What is the difference between foliated and nonfoliated metamorphic rock?

April 16, 2015 Questions EQ: How and where does sedimentary rock form? Subject Area: Ch: 4 Sec: 3 Sedimentary Rock EQ: How and where does sedimentary rock form? Questions How does the two types of sedimentary rock form? Agenda Roll Chapter 4 Section 3 “Sedimentary Rock” Video: “The Hard Facts” Come in Quietly and sit at your desk, open to your notes, write the new question, and wait quietly for class to begin.

Metamorphic Rock Metamorphic Meta + Morphos = The word metamorphic comes from meta, meaning “changed,” the word morphos, meaning “shape.” Metamorphic Meta + Morphos = Franz Kafka: The Metamorphosis

Metamorphic Rock Metamorphic rocks are those in which the structure, texture, or composition of the rock has changed.

Metamorphic Rock Rock can undergo metamorphism by heat or pressure acting alone, or by a combination of the two.

Metamorphic Rock Igneous Metamorphic Sedimentary All three rock types – igneous, sedimentary, or metamorphic – can change into metamorphic rock. Igneous Metamorphic Sedimentary

Origins of Metamorphic Rock The texture or composition of a rock can change if the temperature or pressure of a new environment is different from the one the rock formed in.

Origins of Metamorphic Rock Most metamorphic change is caused by increased pressure. This takes place at depths greater than 2 km. At depths more than 16 km the pressure can be more than 4000 times the pressure of the atmosphere.

Origins of Metamorphic Rock The temperature at which metamorphism occurs ranges from 50°C to 1000°C. At temperatures greater than 1000°C most rock will melt. Metamorphism does not melt rock. Melted rock would then become magma and then igneous rock.

Cooked Metamorphic Rock Metamorphic rock generally looks as if they have been cooked and squeezed. An example of this might be garnet schist.

Contact Metamorphism When magma moves through the crust, it flows near surrounding rock and “cooks” it.

Contact Metamorphism Contact Metamorphism happens when the magma comes near rock, heats it, but does not melt it. This will effect a small amount of rock.

Regional Metamorphism Rock can also undergo regional metamorphism when enormous pressure builds up in the rock that is deeply buried under other rock formations, or when large pieces of the Earth collide with each other.

Birthstones Birthstones are gemstones, or mineral crystals. For each month of the year, there are one or two different birthstones. What is your birthstone?

Composition of Metamorphic Rock When conditions within the Earth’s crust change, the minerals of a rock may no longer be stable in the new environment.

Composition of Metamorphic Rock The original minerals change into minerals that are more stable in the new temperature and pressure conditions.

Composition of Metamorphic Rock Many of these new minerals occur only in metamorphic rock. Temperature, pressure conditions, and composition of the rock, will determine which metamorphic minerals will form.

Textures of Metamorphic Rock Texture is used to classify metamorphic rock. All metamorphic rock has two textures, foliated and nonfoliated.

Foliated Metamorphic Rock Foliated metamorphic rock consists of minerals that are aligned and look almost like the pages of a book.

Foliated Metamorphic Rock Foliated metamorphic rock contains mineral grains that are aligned by pressure.

Foliated Metamorphic Rock The effects of metamorphism depend on the amount of heat and pressure applied to the rock.

Nonfoliated Metamorphic Rock Nonfoliated metamorphic rock does not appear to have any regular pattern.

Nonfoliated Metamorphic Rock The lack of aligned mineral grains make metamorphic rock nonfoliated.

Foliated or Nonfoliated?

Foliated or Nonfoliated?

Foliated or Nonfoliated?

Foliated or Nonfoliated?

Foliated or Nonfoliated?

Foliated or Nonfoliated?

Foliated or Nonfoliated?

Review 1. What is the difference between foliated and nonfoliated metamorphic rock? Response: The difference between foliated and nonfoliated metamorphic rock is …

Summary Answer the essential question “Where and how does Metamorphic rock form?” Your answer needs to be in complete sentences. Place your answer at the bottom of the notes we did today. Make sure you include differences between foliated and nonfoliated rock. Use your notes to get the answers.

Elements What did you know? _____________________________________________ 2. What did you learn? 3. What do you want to know?