UPSC CSE Prelims
Question 43
Which of the following are the evidences of the phenomenon of continental drift?
- The belt of ancient rocks from Brazil coast matches with those from Western Africa.
- The gold deposits of Ghana are derived from the Brazil plateau when the two continents lay side by side.
- 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.
View correct answer and explanation
Correct answer: C
Correct Option: C (I, II and III)
Explanation: Matching rock formations across the Atlantic, historical Ghanaian gold deposits and comparable Gondwana sediments on southern landmasses all support that the continents were once joined.
Statement / Pair / Item-wise Analysis:
I: True-ancient Brazil and western Africa rock belts correlate.
II: True-gold-bearing geology in Ghana relates to the formerly adjoining South American terrain.
III: True-Gondwana strata occur across India and other former southern supercontinent fragments.
Option-wise Analysis:
A. Incorrect-omits II which the answer requires.
B. Incorrect-omits III which the answer requires.
C. Correct-this matches the facts and the item-wise assessment above.
D. Incorrect-omits I which the answer requires.