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In India, rocks of which of the following regions was formed the earliest?
- a)Khasi hills
- b)Lower Shiwaliks
- c)Indo-Gangetic plain
- d)Deccan Traps
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
In India, rocks of which of the following regions was formed theearlie...
Justification: Geoglogy of India can be categorized in following eras, in
increasing chronological order.
increasing chronological order.
• Precambrian super-eon
• Phanerozoic
o Palaeozoic
§ Lower Paleozoic
§ Upper Paleozoic
o Mesozoic
o Cenozoic
§ Tertiary period
§ Quaternary period
Option (a): Khasi hills, one of youngest, belong to Tertiary period (to which
a large area in North-east also belongs).
Option (b): Shiwaliks are part of Himalayas, so given the reasoning below,
this (b) will also be incorrect.
Option (c): The alluvium which is found in the Indo-Gangetic plain belongs
to the Quaternary period. It was eroded from the Himalayas by the rivers
and the monsoons. Since Himalayas were formed after Deccan traps, and
are very young, (c) can’t be the answer.
The Deccan plateau in India is one of the oldest plateaus in India made
mainly from igneous rocks.
We will be covering more questions on this area in later tests.
Q Source: Improvisation: Page 42: NCERT 6th Geography: The Earth Our
Habitat
• Phanerozoic
o Palaeozoic
§ Lower Paleozoic
§ Upper Paleozoic
o Mesozoic
o Cenozoic
§ Tertiary period
§ Quaternary period
Option (a): Khasi hills, one of youngest, belong to Tertiary period (to which
a large area in North-east also belongs).
Option (b): Shiwaliks are part of Himalayas, so given the reasoning below,
this (b) will also be incorrect.
Option (c): The alluvium which is found in the Indo-Gangetic plain belongs
to the Quaternary period. It was eroded from the Himalayas by the rivers
and the monsoons. Since Himalayas were formed after Deccan traps, and
are very young, (c) can’t be the answer.
The Deccan plateau in India is one of the oldest plateaus in India made
mainly from igneous rocks.
We will be covering more questions on this area in later tests.
Q Source: Improvisation: Page 42: NCERT 6th Geography: The Earth Our
Habitat
Most Upvoted Answer
In India, rocks of which of the following regions was formed theearlie...
Explanation:
- The Deccan Traps are a large igneous province located on the Deccan Plateau of west-central India.
- The Deccan Traps were formed between 66 and 68 million years ago, at the end of the Cretaceous period.
- These rocks are associated with the mass extinction event that marked the end of the dinosaurs.
- Therefore, rocks of the Deccan Traps region were formed the earliest among the given options.
- The other regions, such as the Khasi hills, Lower Shiwaliks, and Indo-Gangetic plain, are relatively younger in geological history.
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In India, rocks of which of the following regions was formed theearliest?a)Khasi hillsb)Lower Shiwaliksc)Indo-Gangetic plaind)Deccan TrapsCorrect answer is option 'D'. Can you explain this answer?
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