Question:
The cleavage which occurs in rocks with minerals that are not evenly distributed is called as
The cleavage which occurs in rocks with minerals that are not evenly distributed is called as
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Rock cleavage is a set of closely spaced planar surfaces along which a rock tends to split, produced during deformation and metamorphism. The style of cleavage depends on how the minerals are arranged within the rock.
Updated On: Jun 16, 2026
- Transposition cleavage
- Slaty cleavage
- Continuous cleavage
- Spaced cleavage
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The Correct Option is D
Solution and Explanation
Concept:
Rock cleavage is a set of closely spaced planar surfaces along which a rock tends to split, produced during deformation and metamorphism. The style of cleavage depends on how the minerals are arranged within the rock.
Step 1:
Consider an evenly distributed mineral fabric. When the platy minerals are uniformly spread throughout a very fine grained rock, the cleavage planes are extremely close and pervasive, giving continuous (or slaty) cleavage.
Step 2:
When the minerals are not evenly distributed, the rock separates into distinct mineral-rich bands (cleavage domains) alternating with bands of other minerals (microlithons). The cleavage planes are then discrete and separated by measurable spacing. This is called spaced cleavage.
Answer: Option (4) — Spaced cleavage.
Rock cleavage is a set of closely spaced planar surfaces along which a rock tends to split, produced during deformation and metamorphism. The style of cleavage depends on how the minerals are arranged within the rock.
Step 1:
Consider an evenly distributed mineral fabric. When the platy minerals are uniformly spread throughout a very fine grained rock, the cleavage planes are extremely close and pervasive, giving continuous (or slaty) cleavage.
Step 2:
When the minerals are not evenly distributed, the rock separates into distinct mineral-rich bands (cleavage domains) alternating with bands of other minerals (microlithons). The cleavage planes are then discrete and separated by measurable spacing. This is called spaced cleavage.
Answer: Option (4) — Spaced cleavage.
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