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The major characteristics of the Archaean rock system is that
- a)It was formed before the appearance of life in the geologic sequence.
- b)It was the first metamorphic sedimentary rock.
- c)It hosts the major coal deposits of India.
- d)These rocks are largely igneous
Correct answer is option 'A'. Can you explain this answer?
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The major characteristics of the Archaean rock system is that a) It w...
The major characteristics of the Archaean rock system can be summarized as follows:
a) Formed before the appearance of life in the geologic sequence:
The Archaean rock system refers to the oldest rock system on Earth, which formed between 4 to 2.5 billion years ago. It predates the appearance of life on Earth, as the first evidence of life dates back to around 3.5 billion years ago. Therefore, the Archaean rock system was formed before the appearance of life in the geologic sequence.
b) Not the first metamorphic sedimentary rock:
While the Archaean rock system is known for its high-grade metamorphic rocks, it is not the first metamorphic sedimentary rock system. Metamorphic rocks are formed from pre-existing rocks under conditions of high temperature and pressure. The Archaean rock system is primarily composed of igneous rocks, which were formed through volcanic activity.
c) Not the host of major coal deposits of India:
The major coal deposits of India are primarily found in the Gondwana rock system, which formed during the Permian and Carboniferous periods, around 300 to 200 million years ago. The Archaean rock system, being much older, does not host the major coal deposits of India.
d) Largely igneous rocks:
The Archaean rock system is predominantly composed of igneous rocks. Igneous rocks are formed through the solidification and crystallization of molten magma or lava. The Archaean rock system is characterized by the presence of various types of igneous rocks, including granite, gneiss, and greenstone belts. These rocks provide valuable insights into the early history of Earth's formation and the processes that shaped its crust.
In conclusion, the major characteristic of the Archaean rock system is that it was formed before the appearance of life in the geologic sequence. This rock system is primarily composed of igneous rocks and is distinct from the later rock systems that host coal deposits and exhibit metamorphic sedimentary characteristics.
a) Formed before the appearance of life in the geologic sequence:
The Archaean rock system refers to the oldest rock system on Earth, which formed between 4 to 2.5 billion years ago. It predates the appearance of life on Earth, as the first evidence of life dates back to around 3.5 billion years ago. Therefore, the Archaean rock system was formed before the appearance of life in the geologic sequence.
b) Not the first metamorphic sedimentary rock:
While the Archaean rock system is known for its high-grade metamorphic rocks, it is not the first metamorphic sedimentary rock system. Metamorphic rocks are formed from pre-existing rocks under conditions of high temperature and pressure. The Archaean rock system is primarily composed of igneous rocks, which were formed through volcanic activity.
c) Not the host of major coal deposits of India:
The major coal deposits of India are primarily found in the Gondwana rock system, which formed during the Permian and Carboniferous periods, around 300 to 200 million years ago. The Archaean rock system, being much older, does not host the major coal deposits of India.
d) Largely igneous rocks:
The Archaean rock system is predominantly composed of igneous rocks. Igneous rocks are formed through the solidification and crystallization of molten magma or lava. The Archaean rock system is characterized by the presence of various types of igneous rocks, including granite, gneiss, and greenstone belts. These rocks provide valuable insights into the early history of Earth's formation and the processes that shaped its crust.
In conclusion, the major characteristic of the Archaean rock system is that it was formed before the appearance of life in the geologic sequence. This rock system is primarily composed of igneous rocks and is distinct from the later rock systems that host coal deposits and exhibit metamorphic sedimentary characteristics.
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The major characteristics of the Archaean rock system is that a) It w...
- The Azoic Age was used to describe the age of rocks formed before the appearance of life in the geologic sequence. Also known as Pre-Cambrian rocks, these are the oldest rocks of the Earth’s crust.
- The Archaean period covers over 85 % of the total geological history time of Earth and therefore is very significant. This period marks the development of the first photosynthesis, the life support atmosphere.
- The Archaean or Purana rock system in India is found in Aravallis mountains, two- thirds of the Deccan peninsula and some parts of the North-east.
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The major characteristics of the Archaean rock system is that a) It was formed before the appearance of life in the geologic sequence.b) It was the first metamorphic sedimentary rock.c) It hosts the major coal deposits of India.d) These rocks are largely igneousCorrect answer is option 'A'. Can you explain this answer?
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The major characteristics of the Archaean rock system is that a) It was formed before the appearance of life in the geologic sequence.b) It was the first metamorphic sedimentary rock.c) It hosts the major coal deposits of India.d) These rocks are largely igneousCorrect answer is option 'A'. 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 The major characteristics of the Archaean rock system is that a) It was formed before the appearance of life in the geologic sequence.b) It was the first metamorphic sedimentary rock.c) It hosts the major coal deposits of India.d) These rocks are largely igneousCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The major characteristics of the Archaean rock system is that a) It was formed before the appearance of life in the geologic sequence.b) It was the first metamorphic sedimentary rock.c) It hosts the major coal deposits of India.d) These rocks are largely igneousCorrect answer is option 'A'. Can you explain this answer?.
The major characteristics of the Archaean rock system is that a) It was formed before the appearance of life in the geologic sequence.b) It was the first metamorphic sedimentary rock.c) It hosts the major coal deposits of India.d) These rocks are largely igneousCorrect answer is option 'A'. 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 The major characteristics of the Archaean rock system is that a) It was formed before the appearance of life in the geologic sequence.b) It was the first metamorphic sedimentary rock.c) It hosts the major coal deposits of India.d) These rocks are largely igneousCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The major characteristics of the Archaean rock system is that a) It was formed before the appearance of life in the geologic sequence.b) It was the first metamorphic sedimentary rock.c) It hosts the major coal deposits of India.d) These rocks are largely igneousCorrect answer is option 'A'. Can you explain this answer?.
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The major characteristics of the Archaean rock system is that a) It was formed before the appearance of life in the geologic sequence.b) It was the first metamorphic sedimentary rock.c) It hosts the major coal deposits of India.d) These rocks are largely igneousCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for The major characteristics of the Archaean rock system is that a) It was formed before the appearance of life in the geologic sequence.b) It was the first metamorphic sedimentary rock.c) It hosts the major coal deposits of India.d) These rocks are largely igneousCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of The major characteristics of the Archaean rock system is that a) It was formed before the appearance of life in the geologic sequence.b) It was the first metamorphic sedimentary rock.c) It hosts the major coal deposits of India.d) These rocks are largely igneousCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
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