Which of the following statements is/are correct regarding the properties of the oceanic lithosphere?
Show Hint
- Older lithosphere cools at a slower rate compared to younger lithosphere
- Heat flow increases with lithospheric age
- Heat flow in the lithosphere increases with distance from the spreading ridge
- Thickness of the lithosphere increases with age
The Correct Option is A, D
Solution and Explanation
Step 1: Understand cooling behavior with age.
Younger lithosphere cools rapidly. As it ages, the lithosphere becomes thermally insulated and the rate of cooling decreases, making (A) correct. Step 2: Heat flow trends.
Heat flow is highest at the ridge (young lithosphere) and decreases with age and distance from the ridge, making (B) and (C) incorrect.
Step 3: Lithosphere thickness.
With cooling over time, the lithosphere becomes denser and thicker. Hence, (D) is correct.
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