Which one among the following statements is not correct?

Statement 3 is incorrect because the Vindhyan Range is primarily classified as a block mountain or a residual mountain range, rather than a fold mountain. It consists of horizontally bedded sedimentary rocks of the Proterozoic age that have undergone minimal folding [2]. In contrast, the Aravalli Range is recognized as one of the oldest fold mountain chains in the world, though it is now highly denuded [1]. The Shillong Plateau (Meghalaya Plateau) is indeed a geological outlier of the Peninsular Plateau, separated from the main block by the Malda Gap due to tectonic faulting [4]. The Rajmahal Highlands are composed of volcanic lava deposits known as the Rajmahal Traps, which formed during the Mesozoic era. Therefore, the classification of the Vindhyans as fold mountains is the only false statement among the options provided.

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 2: Physiography > 1. The North Central Highlands > p. 54
2. [2] CONTEMPORARY INDIA-I ,Geography, Class IX . NCERT(Revised ed 2025) > Chapter 2: Physical Features of India > The Peninsular Plateau > p. 12
3. [4] INDIA PHYSICAL ENVIRONMENT, Geography Class XI (NCERT 2025 ed.) > Chapter 2: Structure and Physiography > The Northeastern Plateau > p. 13