UPSC Prelims 2025·GS1·geography·geomorphology

Which of the following are the evidences of the phenomenon of continental drift? I. The belt of ancient rocks from Brazil coast matches with those from Western Africa. II. The gold deposits of Ghana are derived from the Brazil plateau when the two continents lay side by side. III. The Gondwana system of sediments from India is known to have its counterparts in six different landmasses of the Southern Hemisphere. Select the correct answer using the code given below.

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  1. AI and III only
  2. BI and II only
  3. CI, II and IIICorrect
  4. DII and III only

Explanation

All three statements provide evidence for continental drift: I. Ancient rock belt from Brazil matches Western Africa: Correct. The geological formations along the Brazilian coast align remarkably with those of Western Africa, suggesting these continents were once joined. Similar rock types, ages, and structures provide strong geological evidence. II. Ghana's gold deposits derived from Brazil plateau when continents were adjacent: Correct. The gold-bearing formations in Ghana show geological continuity with the Brazilian plateau, indicating they were part of the same geological system before continental separation. III. Gondwana sediments from India match six Southern Hemisphere landmasses: Correct. The Gondwana rock formations found in India have counterparts in Antarctica, Australia, South America, Africa, and Madagascar, providing compelling evidence that these landmasses were once part of the supercontinent Gondwana.
geography: Which of the following are the evidences of the phenomenon of continental drift? I. The belt of ancient rocks from Brazi

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