Q
QuestionGeology

Which of the following is an example of a non-foliated metamorphic rock? A. Slate B. Schist C. Marble D. Gneiss
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Answer

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Step 1:
I'll solve this problem step by step:

Step 2:
: Understand Foliated vs.

Non-Foliated Metamorphic Rocks - Foliated metamorphic rocks have a layered or banded appearance due to mineral alignment during metamorphism - Non-foliated metamorphic rocks do not have this layered texture

Step 3:
: Analyze Each Rock Type

A. Slate: Foliated metamorphic rock (formed from shale under low-grade metamorphism) B. Schist: Foliated metamorphic rock (formed from slate under higher-grade metamorphism) C. Marble: Non-foliated metamorphic rock (formed from limestone or dolomite) D. Gneiss: Foliated metamorphic rock (formed under high-grade metamorphic conditions)

Step 4:
: Identify the Non-Foliated Rock

- Looking at the options, Marble is the only rock that does not have a layered or banded appearance - Marble forms when limestone is subjected to heat and pressure, but the minerals recrystallize without developing a preferred orientation

Final Answer

Marble is the example of a non-foliated metamorphic rock.