Q. Why do Fold Mountains have enormous thickness of sedimentary rocks? [CDS 2011] (Solved)
1. Due to deposition of sediments in a valley for millions of years
2. Due to accumulation of sediments in a geosyncline
3. The plains were folded into mountains
4. The sediments were folded into recumbent and nappe folds
- b. Due to accumulation of sediments in a geosyncline