GK
INDIAN GEOGRAPHY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Aravalli System
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Archean System
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Cuddapah System
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Vindhyan System
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Detailed explanation-1: -The Archean system is the oldest rock system of India. The rocks belonging to this system were formed at the time of cooling and solidification of the upper crust of the earth’s surface in the pre-Cambrian era about 40004000 million years ago.
Detailed explanation-2: -Igneous rocks are the oldest rocks, while metamorphic are being derivative of igneous rocks and sedimentary rocks. 2. Resistance to weathering and erosion is less to metamorphic rocks compared to igneous rocks.
Detailed explanation-3: -Archean rocks are often heavily metamorphized deep-water sediments, such as graywackes, mudstones, volcanic sediments, and banded iron formations. Volcanic activity was considerably higher than today, with numerous lava eruptions, including unusual types such as komatiite.