Question

Which one of the following is the most important basis for the classification of sedimentary rocks?

• A. Environment of deposition
• B. Process of formation of sedimentary materials
• C. Source of sedimentary materials
• D. Texture

Hint:

Texture is a key basis of sedimentary rock classification because it reflects grain size and depositional character.

Answer 1

The Correct Option is D

Concept:
Sedimentary rocks are classified using several features such as texture, composition, origin and depositional environment.

Step 1: Understand texture.
Texture includes grain size, sorting, roundness and arrangement of particles.

Step 2: Importance of texture.
Texture is very important because it directly tells about the nature of sediment, transport history and depositional conditions. \[ \text{Texture} \Rightarrow \text{grain size, sorting and arrangement} \]

Step 3: Final answer.
Among the given options, texture is the most important basis for classification. \[ \therefore \text{Correct Answer is (D)} \]