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Which of the following physiographic features of India is geologically the oldest?
- a)Himalayan mountain chain
- b)Indus-Ganga Brahmaputra plain
- c)The Peninsular plateau
- d)The Coastal plains
Correct answer is option 'C'. Can you explain this answer?
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Which of the following physiographic features of India is geologically...
To determine the oldest physiographic feature of India, we need to consider the geological history of the region. The Indian subcontinent has undergone several geological processes over millions of years, resulting in the formation of various landforms.
The oldest physiographic feature of India is the Peninsular plateau. Here's why:
1. Formation: The Peninsular plateau was formed during the Archean Eon, approximately 3.6 billion years ago. It is primarily composed of ancient igneous and metamorphic rocks, which are among the oldest rocks found on Earth.
2. Stability: Unlike other physiographic features, such as the Himalayan mountain chain, the Peninsular plateau has been relatively stable throughout geological history. It has experienced minimal tectonic activity compared to other regions.
3. Erosion: Over time, the Peninsular plateau has undergone extensive erosion, resulting in the formation of prominent hills, plateaus, and valleys. The Deccan Traps, a large volcanic province, is a notable feature of the plateau.
4. Fossil Records: The Peninsular plateau contains significant fossil records, including those of early life forms. These fossils provide valuable insights into the Earth's ancient ecosystems and evolutionary history.
In conclusion, the Peninsular plateau is the geologically oldest physiographic feature of India. It has withstood the test of time and holds important geological and paleontological significance.
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Which of the following physiographic features of India is geologically the oldest?a)Himalayan mountain chainb)Indus-Ganga Brahmaputra plainc)The Peninsular plateaud)The Coastal plainsCorrect answer is option 'C'. Can you explain this answer?
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