Shale Is Metamorphosed into Three Rock Types: 1) a Banded

question 117

Multiple Choice

Shale is metamorphosed into three rock types: 1) a banded gneissic rock; 2) a rock with small mica crystals with a shiny aspect; 3) a very shiny rock with large mica crystals; and 4) a dull slate with cleavage. Which of the following lists these rocks in order of increasing metamorphic grade?

• A) 1, 2, 3, 4
• B) 4, 3, 2, 1
• C) 2, 3, 4, 1
• D) 4, 2, 3, 1
• E) 3, 2, 4, 1

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