Which of the following statements are correct? 1. Sediments of Gondwana System were deposited under marine condition. 2. Rocks of Gondwana System are fossiliferous. 3. Rocks of Gondwana System contain metallic mineral deposits. 4. Gondwana deposition took place in downfaulted trough. Select the correct answer using the code given below.

The Gondwana System is primarily characterized by continental sedimentation rather than marine conditions. These rocks are predominantly fluviatile and lacustrine in origin, having been deposited by rivers and in lakes [7]. Statement 1 is therefore incorrect, as marine incursions were only occasional and not the primary condition [5]. Statement 2 is correct; the system is highly fossiliferous, famously containing the Glossopteris flora and various faunal remains [3]. Statement 3 is generally considered incorrect in the context of major metallic deposits; while Gondwana rocks contain iron ore (siderite/limonite), these are often of inferior quality and the system is primarily known for non-metallic resources like coal (95% of India's reserves) and clays [5]. Statement 4 is correct as the deposition occurred in linear basins that subsided along trough faults or downfaulted grabens [4]. Thus, only statements 2 and 4 are accurate.

Sources

1. [2] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 1: Geological Structure and formation of India > Palaeozoic System in the Indian Geologic Time Scale > p. 15
2. [7] https://www.sciencedirect.com/science/article/abs/pii/S1367912002000524
3. [5] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 1: Geological Structure and formation of India > Panchet Series > p. 18
4. [3] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 7: Tectonics > Tillite deposits > p. 97
5. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 1: Geological Structure and formation of India > THE MESOZOIC ERA (THE GONDWANA SYSTEM) > p. 16
6. [4] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 2: Physiography > 5. Gondwana System > p. 51