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Quiz

Quiz. Get out you ESRT and a piece of paper The following questions are from your ESRT. You’ll have a minute per question…. Question 1. What is foliation?. Question 2. What are the two types on Metamorphism?. Question 3. How can you test if a rock is Marble or Quartzite?. Question 4.

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Quiz

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  1. Quiz • Get out you ESRT and a piece of paper • The following questions are from your ESRT. • You’ll have a minute per question…

  2. Question 1 • What is foliation?

  3. Question 2 • What are the two types on Metamorphism?

  4. Question 3 • How can you test if a rock is Marble or Quartzite?

  5. Question 4 • I am a foliated metamorphic rock with a coarse texture made from high grade metamorphism. What am I?

  6. Answers • What is foliation? • Foliation is the alignment of minerals • What are the two types on Metamorphism? • Contact and Regional • How can you test if a rock is Marble or Quartzite? • Marble bubbles with acid and Quartzite doesn’t. • I am a foliated metamorphic rock • Gneiss

  7. SEDIMENTARY ROCKS

  8. Sedimentary rocks • How are sedimentary rocks formed? • What do sedimentary rocks look like? • What do the characteristics tell us about the rock? • What are sedimentary rocks used for? • How do you use page 7 of the ESRT for sedimentary rocks?

  9. How are sedimentary rocks formed? • Sedimentary rocks are formed through: • Erosion • Deposition • Compaction • Cementation …At the earth’s surface usually from other rocks.

  10. How are sedimentary rocks formed? • Step one is: Erosion of elevated land such as mountains

  11. How are sedimentary rocks formed? • Step two is: Deposition of the eroded material

  12. How are sedimentary rocks formed? • Step three is: Compaction of buried sediment over time

  13. How are sedimentary rocks formed? • Step four is: Cementation of the particles into a solid rock Many times sand is the glue!

  14. What do sedimentary rocks look like? • Three types of sedimentary rocks 1.Clastic - sediments cemented together 2.Crystalline – Nonclastic (chemical) 3.Bioclastic - organic material

  15. What do sedimentary rocks look like? • Clastic rocks are made of particles cemented together such as: • Clay - shale • Silt - siltstone • Sand - sandstone • Pebbles - conglomerate

  16. Clay/silt sand sandstone shale What do sedimentary rocks look like?

  17. What do sedimentary rocks look like? • Crystalline rocks are pure cement such as: • Rock salt • Rock gypsum • Limestone (has fossils)

  18. Crystalline rocks formation • These rocks from evaporation of sea water and chemical precipitation.

  19. What do sedimentary rocks look like? • Biological (bioclastic) rocks are formed through organic remains such as: • Coal • Limestone (has fossils)

  20. What do characteristics tell us about the rock? • Grain size is evidence of environment where rock formed • Fossils give clues to past life and climate

  21. What do characteristics tell us about the rock?

  22. What do characteristics tell us about the rock?

  23. What are sedimentary rocks used for?

  24. How to use ESRT page 7 - sedimentary rocks?

  25. Steps to ID a Sedimentary Rock • Texture • Clasitc, Crystalline or Bioclastic • Grain size • Composition • What it looks like • Fossils? Other features like ripple marks?

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