17.3E| Identifying and Interpreting Metamorphic Rocks

Instructions

Now you'll apply what you learned about metamorphic rock textures and compositions to naming common metamorphic rocks. You'll use your textbook's Metamorphic Rock Identification table. If you are unable to access the document, reach out to me right away. You can also refer to this table in your text.

To use the table, first, determine the texture of the rock, is it foliated or non-foliated?  and composition of the rock. Second, consider the composition of the rock then combine those two criteria to determine the name of the rock. For example, a foliated rock that is made of microscopic clay is named Slate. 

Read each question and choose the best answer. You have two attempts and no time limit. 

Note: If you find that you need extra support in accessing any items in this quiz, please notify me via email right away so I can offer you an alternative.

Time Needed

10-15 minutes.

Learning Objectives

• Students can explain the rock cycle, differentiate among the three types of rocks, and use texture and composition to identify common rocks and their origins
• Describe the processes that form common igneous rocks
• Use texture to classify igneous rocks and to interpret their cooling history and origin
• Describe how the ratio between Fe/Mg and silica dictates the color and composition of igneous rock
• Describe how and where magma forms and evolves 
• Identify intrusive igneous features