Question

Fissility is best shown by

• A. sandstone
• B. siltstone
• C. shale
• D. limestone

Hint:

Shale is known for its fissility and is easily split into thin layers, making it ideal for studying sedimentary layers.

Answer 1

The Correct Option is C

Step 1: Understanding the question.
The question asks which rock type best shows fissility, the ability to break into thin layers. Fissility is commonly associated with fine-grained sedimentary rocks.

Step 2: Analyzing the options.
(A) sandstone: Sandstone is not typically fissile; it tends to break in a more granular manner due to its larger particle size.
(B) siltstone: Siltstone is fine-grained and may show some fissility but is not as strongly fissile as shale.
(C) shale: Shale is a fine-grained sedimentary rock that is highly fissile, meaning it easily splits into thin layers.
(D) limestone: Limestone is not fissile, as it is typically a coarser-grained rock.

Step 3: Conclusion.
The correct answer is (C) shale because it is the rock most associated with fissility.