Consider the following pairs:1. Pangea and Panthalassa - 250 million ...
1. Pangea and Panthalassa - 250 million years ago: Correct. Pangea was a supercontinent that existed around 250 million years ago, surrounded by the vast ocean Panthalassa.
2. Breaking of Pangea - 100 million years ago: Incorrect. Pangea began to break apart around 150 million years ago, not 100 million years ago.
3. Formation of Tethys Sea - After the breakup of Pangea: Correct. The breakup of Pangea led to the formation of the Tethys Sea between Laurasia and Gondwanaland.
4. Convergence of Indo-Australian and Eurasian Plates - Driven by mantle convection currents: Correct. The convergence of these plates was driven by convection currents in the Earth's mantle.
Thus, pairs 1, 3, and 4 are correctly matched, while pair 2 is incorrect.
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Consider the following pairs:1. Pangea and Panthalassa - 250 million ...
Understanding the Geological Events
To evaluate the correctness of the pairs related to geological history, we can analyze each statement:
1. Pangea and Panthalassa - 250 million years ago
- Correct. Pangea was a supercontinent that existed around 335 to 175 million years ago, with Panthalassa being the vast ocean surrounding it. Their association is accurate for the given time frame.
2. Breaking of Pangea - 100 million years ago
- Correct. The breakup of Pangea began approximately 200 million years ago during the Jurassic period and continued into the Cretaceous, around 100 million years ago. Thus, this statement aligns well with the geological timeline.
3. Formation of Tethys Sea - After the breakup of Pangea
- Correct. The Tethys Sea formed as a result of the tectonic activities following the breakup of Pangea. It was an important ocean that existed between the northern and southern continents.
4. Convergence of Indo-Australian and Eurasian Plates - Driven by mantle convection currents
- Incorrect. While mantle convection currents do drive plate tectonics in general, the specific convergence of these plates is largely influenced by the collision and interaction of the Indian plate with the Eurasian plate, which has complex dynamics beyond just mantle convection.
Conclusion
Thus, three out of the four pairs are correctly matched. The correct answer is option 'C': Only three pairs.