S1: The Cretaceous Period extends from about 146 million years ago to 65 million years ago. S6: During this period, enormous quantity of basaltic lava was poured out to the surface assuming a great thickness of over three thousand meters. P: Apart from deposits this period is marked by the transgression of the sea and outpouring of huge quantity of lava so as to form the Deccan trap and intrusion of plutonic rocks such as gabbro and granite. Q: Towards the end of the Cretaceous Period the peninsula was affected by intense volcanic activity. R: This outpouring has been very widely distributed in the country with divergent facies of deposits being found in different parts of India. S: In contrast to the relatively newer Himalayas, these facies that are found in different parts of India are much older in origin.
A.Q S R P
B.Q P R S✓ Correct
C.P R S Q
D.P Q S R
Explanation
After S1 introduces the Cretaceous Period, Q is the natural next step explaining 'Towards the end of the Cretaceous Period the peninsula was affected by intense volcanic activity'. P follows describing the deposits and outpouring forming the Deccan trap. R then explains 'This outpouring has been very widely distributed in the country'. Finally, S contrasts these older facies with the newer Himalayas, leading to S6 about the enormous quantity of basaltic lava. Hence the correct order is Q P R S, option (b).
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