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Metamorphic and Sedimentary Rocks

Metamorphic and Sedimentary Rocks. What are they?. Rocks that change because of temperature and pressure or the presence of hot watery fluids can form from igneous, sedimentary, or other metamorphic rocks. . What happens?. Heat and pressure can cause minerals to enlarge.

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Metamorphic and Sedimentary Rocks

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  1. Metamorphic and Sedimentary Rocks

  2. What are they? • Rocks that change because of temperature and pressure or the presence of hot watery fluids • can form from igneous, sedimentary, or other metamorphic rocks.

  3. What happens? • Heat and pressure can cause minerals to enlarge. • One kind of rock can change into many other kinds!

  4. For Example: • Shale --------- Slate

  5. Classifying • Foliated or nonfoliated • (VOCAB WORDS)

  6. Foliated? • When mineral grains line up in parallel layers

  7. Nonfoliated? • The mineral grains grow and rearrange, but they don’t form layers.

  8. 3 Question 1 What type of rocks can form from any type of rock? A. igneous B. intrusive C. metamorphic D. sedimentary

  9. 3 Answer The answer is C. Heat, pressure and hot fluids trigger changes in various rock types forming metamorphic rocks.

  10. 3 Question 2 Name the metamorphic rock texture in which mineral grains line up in parallel layers. A. foliated B. nonfoliated C. sedimentary D. volcanic

  11. 3 Answer The answer is A. Slate is a foliated metamorphic rock formed from shale.

  12. 3 Question 3 Which of these is a nonfoliated metamorphic rock? A. basalt B. marble C. shale D. slate

  13. 3 Answer The answer is B. Marble forms from limestone. Basalt is an igneous rock. Slate is a foliated metamorphic rock that forms from the sedimentary rock, shale.

  14. Sedimentary Rocks • Igneous rock is the most common on Earth. • Most of igneous is under ground. • About 75% of the rocks exposed on Earth’s surface is sedimentary.

  15. What is it? • Vocab Review: Sedimentsare loose materials such as rock fragments, mineral grains, and bits of shell that have been moved by wind, water, ice, or gravity. • Sedimentary rock forms when sediments are pressed and cemented together, or when minerals form from solutions.

  16. Superposition • What is superposition?

  17. What do you think? • What materials can sedimentary rocks be made from? • Can remains from other plants and animals be turned into sedimentary rock?

  18. Classifying • Detritol – “detritus” means to tear away. • What do you think will cause these kind? • Chemical-form when dissolved minerals come out of solution. • Organic-Rocks made of the remains of once-living things.

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