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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Gurmeet Singh posted an Question
July 31, 2020 • 18:11 pm
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30 points
30 points
- IIT JAM
- Geology (GG)
Question. recent oceanographic studies have revealed that about 50 % of the present sea floor (about 1/3rd of the earth's surface area) has been created during
Question. Recent oceanographic studies have revealed that about 50 % of the present sea floor (about 1/3rd of the earth's surface area) has been created during ......... of geological time. sir I think it should be 2/3rd ocean floor??
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Rahul kumar Best Answer
Answer should be 40 % of the geological time. However data may differ because different research shows different data regarding the same.
here ans is given 1.5 %
and my question is here is....there should be 2/3rd instead 1/3rd (which is given in question)
Dear student, there might be some discrepancies in the answer. The age of the earth is 4.6 billion years and 1.5% of 4.6 billion years is just 0.069 billion years. So according to the answer, 50% of sea floor was created by 4.531 billion years ago which seems impossible. Because you know that we only get rocks younger than 4 billion years and even oceans were created long after that. So there must be some discrepancies
And yes, you are correct there are some typing mistakes in question itself. But you can also think in other way, it's given that 50% of sea floor. 100% of seafloor constitute 2/3rd of Earth's surface so 50% should be 1/3rd of the Earth's surface.
yes. thanks you sir