Question

Which of the following is/are NOT true for texturally immature sandstone?

• A. Clay content is high
• B. Little or no clay present
• C. Grains are well sorted
• D. Grains are rounded

Hint:

Texturally immature sandstones have high clay content, poorly sorted grains, and angular to subangular particles.

Answer 1

The Correct Option is B, C, D

Step 1: Understanding the question.
The question asks about the characteristics of texturally immature sandstone, which is a type of sandstone with poorly sorted and angular grains.
Step 2: Analyzing the options.
(A) Clay content is high: Correct — Texturally immature sandstones generally have high clay content because they are poorly sorted.
(B) Little or no clay present: Incorrect — Texturally immature sandstones often contain a significant amount of clay.
(C) Grains are well sorted: Incorrect — In texturally immature sandstones, the grains are poorly sorted.
(D) Grains are rounded: Incorrect — In texturally immature sandstones, the grains are typically angular or subangular, not rounded.
Step 3: Conclusion.
The correct answer is (B), (C), (D), as these statements are NOT true for texturally immature sandstone.