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Consider the following with reference to Archean rock system in India belonging to certain geologic periods.
1. The Archean rock system in India can be found in Aravali Mountains.
2. This rock system contains non-metallic minerals only.
3. It contains mainly metamorphic sedimentary rocks.
4. It is the oldest rock system in India.
- a)1, 3 and 4 only
- b)2 and 3 only
- c)1 and 4 only
- d)1, 2, 3 and 4
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Consider the following with reference to Archean rock system in India ...
justification: Statement 1: It is found in Aravali Mountains, two-thirds of the Deccan peninsula and some parts of north east.
Statement 2: These rocks have abundant metallic and non-metallic minerals such as iron, copper, manganese, bauxite, lead, zinc, gold, silver, tin, tungsten, mica, asbestos, graphite, etc.
Statement 3: It is the “Dharwar” Rock System which is the first metamorphic sedimentary rocks in India.
Statement 2: These rocks have abundant metallic and non-metallic minerals such as iron, copper, manganese, bauxite, lead, zinc, gold, silver, tin, tungsten, mica, asbestos, graphite, etc.
Statement 3: It is the “Dharwar” Rock System which is the first metamorphic sedimentary rocks in India.
Statement 4: These are the oldest followed by Dharwar rocks. Tertiary rocks are the youngest.
Most Upvoted Answer
Consider the following with reference to Archean rock system in India ...
The correct answer is option 'C' - 1 and 4 only.
Explanation:
1. The Archean rock system in India can be found in Aravali Mountains:
The Archean rock system in India can indeed be found in the Aravali Mountains. The Aravali Range is located across the states of Rajasthan, Haryana, and Delhi in northern India. It is one of the oldest mountain ranges in the world and is predominantly composed of Archean rocks.
4. It is the oldest rock system in India:
The Archean rock system is indeed the oldest rock system in India. The Archean Eon is the earliest geologic eon of Earth's history, spanning from about 4 to 2.5 billion years ago. The Archean rock system in India represents the rocks formed during this time period, making it the oldest rock system in the country.
2. This rock system contains non-metallic minerals only:
This statement is incorrect. The Archean rock system in India does not contain non-metallic minerals only. It is known to host a wide variety of metallic and non-metallic minerals. For example, the Aravali Range is known for its significant deposits of minerals like copper, zinc, lead, silver, and limestone, which are metallic in nature.
3. It contains mainly metamorphic sedimentary rocks:
This statement is also incorrect. The Archean rock system in India does not mainly consist of metamorphic sedimentary rocks. Instead, it predominantly comprises igneous rocks, which were formed through volcanic activity during the Archean Eon. These igneous rocks have undergone subsequent metamorphism over billions of years, leading to the formation of metamorphic rocks in some areas.
In conclusion, the correct statements regarding the Archean rock system in India are that it can be found in the Aravali Mountains and it is the oldest rock system in the country.
Explanation:
1. The Archean rock system in India can be found in Aravali Mountains:
The Archean rock system in India can indeed be found in the Aravali Mountains. The Aravali Range is located across the states of Rajasthan, Haryana, and Delhi in northern India. It is one of the oldest mountain ranges in the world and is predominantly composed of Archean rocks.
4. It is the oldest rock system in India:
The Archean rock system is indeed the oldest rock system in India. The Archean Eon is the earliest geologic eon of Earth's history, spanning from about 4 to 2.5 billion years ago. The Archean rock system in India represents the rocks formed during this time period, making it the oldest rock system in the country.
2. This rock system contains non-metallic minerals only:
This statement is incorrect. The Archean rock system in India does not contain non-metallic minerals only. It is known to host a wide variety of metallic and non-metallic minerals. For example, the Aravali Range is known for its significant deposits of minerals like copper, zinc, lead, silver, and limestone, which are metallic in nature.
3. It contains mainly metamorphic sedimentary rocks:
This statement is also incorrect. The Archean rock system in India does not mainly consist of metamorphic sedimentary rocks. Instead, it predominantly comprises igneous rocks, which were formed through volcanic activity during the Archean Eon. These igneous rocks have undergone subsequent metamorphism over billions of years, leading to the formation of metamorphic rocks in some areas.
In conclusion, the correct statements regarding the Archean rock system in India are that it can be found in the Aravali Mountains and it is the oldest rock system in the country.
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Consider the following with reference to Archean rock system in India belonging to certain geologic periods.1. The Archean rock system in India can be found in Aravali Mountains.2. This rock system contains non-metallic minerals only.3.It contains mainly metamorphic sedimentary rocks.4. It is the oldest rock system in India.a)1, 3 and 4 onlyb)2 and 3 onlyc)1 and 4 onlyd)1, 2, 3 and 4Correct answer is option 'C'. Can you explain this answer?
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Consider the following with reference to Archean rock system in India belonging to certain geologic periods.1. The Archean rock system in India can be found in Aravali Mountains.2. This rock system contains non-metallic minerals only.3.It contains mainly metamorphic sedimentary rocks.4. It is the oldest rock system in India.a)1, 3 and 4 onlyb)2 and 3 onlyc)1 and 4 onlyd)1, 2, 3 and 4Correct answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following with reference to Archean rock system in India belonging to certain geologic periods.1. The Archean rock system in India can be found in Aravali Mountains.2. This rock system contains non-metallic minerals only.3.It contains mainly metamorphic sedimentary rocks.4. It is the oldest rock system in India.a)1, 3 and 4 onlyb)2 and 3 onlyc)1 and 4 onlyd)1, 2, 3 and 4Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following with reference to Archean rock system in India belonging to certain geologic periods.1. The Archean rock system in India can be found in Aravali Mountains.2. This rock system contains non-metallic minerals only.3.It contains mainly metamorphic sedimentary rocks.4. It is the oldest rock system in India.a)1, 3 and 4 onlyb)2 and 3 onlyc)1 and 4 onlyd)1, 2, 3 and 4Correct answer is option 'C'. Can you explain this answer?.
Consider the following with reference to Archean rock system in India belonging to certain geologic periods.1. The Archean rock system in India can be found in Aravali Mountains.2. This rock system contains non-metallic minerals only.3.It contains mainly metamorphic sedimentary rocks.4. It is the oldest rock system in India.a)1, 3 and 4 onlyb)2 and 3 onlyc)1 and 4 onlyd)1, 2, 3 and 4Correct answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following with reference to Archean rock system in India belonging to certain geologic periods.1. The Archean rock system in India can be found in Aravali Mountains.2. This rock system contains non-metallic minerals only.3.It contains mainly metamorphic sedimentary rocks.4. It is the oldest rock system in India.a)1, 3 and 4 onlyb)2 and 3 onlyc)1 and 4 onlyd)1, 2, 3 and 4Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following with reference to Archean rock system in India belonging to certain geologic periods.1. The Archean rock system in India can be found in Aravali Mountains.2. This rock system contains non-metallic minerals only.3.It contains mainly metamorphic sedimentary rocks.4. It is the oldest rock system in India.a)1, 3 and 4 onlyb)2 and 3 onlyc)1 and 4 onlyd)1, 2, 3 and 4Correct answer is option 'C'. Can you explain this answer?.
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