Q.Select the suitable option to complete the following: Gondwana, separating into countries, contributes to the ______. (A) complexity of geological processes (B) simplicity of continental formation (C) speed of geological changes (D) stability of ancient landmasses (Journey to the end of the Earth)
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Start your 14-day free trial to unlock the full solution →Gondwana's breakup into separate continents over millions of years exemplifies the intricate, multi-stage nature of plate tectonics and geological evolution. The answer is (A).
The question asks us to understand what the fragmentation of Gondwana—the ancient supercontinent—tells us about Earth's geological character. Gondwana began breaking apart roughly 180 million years ago, eventually forming South America, Africa, Antarctica, Australia, and the Indian subcontinent. This wasn't a simple split; it involved rifting, seafloor spreading, volcanic activity, mountain building, and climate shifts across vast timescales.
When we say a process is "complex," we mean it involves many interacting factors, stages, and mechanisms. The breakup of Gondwana is a textbook example: different fragments separated at different times, moved in different directions, collided with other landmasses (India crashing into Asia to form the Himalayas), and left behind geological signatures—fossils, rock formations, glacial deposits—that we piece together like a puzzle today.
Let's evaluate each option:
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(A) Complexity of geological processes
The separation of Gondwana required continental rifting, mantle convection, plate boundary formation, and differential movement of multiple fragments. Each stage left distinct geological records. This multi-layered, time-extended process is the very definition of geological complexity.
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(B) Simplicity of continental formation
Continental formation through supercontinent breakup is anything but simple. It involves heat flow, stress fields, magma intrusion, and the interplay of lithospheric plates—hardly a straightforward mechanism.
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(C) Speed of geological changes
Gondwana's breakup unfolded over tens of millions of years. Geological processes are notoriously slow by human standards; this option contradicts the gradualism inherent in plate tectonics. …
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