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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Gurmeet Singh posted an Question
January 16, 2021 • 18:55 pm
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30 points
30 points
- IIT JAM
- Geology (GG)
26. the heat that caused melting in the earth's early history was supplied from which of the following events or causes? b) solar heating and volcanic activity
26. The heat that caused melting in the Earth's early history was supplied from which of the following events or causes? b) solar heating and volcanic activity a) volcanic activity and radioactivity c) a large impact event and radioactivity d) a large impact event and solar heating
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Sajan sarthak Best Answer
the heat that caused melting in the earth's early history was supplied from which of the following events or causes by the large impact event and radioactivity.
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one more thing...how much thick is lithosphere?...option are- a- 50-100....b - 100-200
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The lithosphere is the outer solid part of the earth, including the crust and uppermost mantle. The lithosphere is about 100 km - 200 km thick, although its thickness is age dependent (older lithosphere is thicker).
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50-100 nhi ho skta naa?
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no
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Saurabh 1![]()
Most probable answer of this question should be (C).... As the primitive earth was hitted or impacted by the meteorites in colossal amount and apart from this the other factor might have been radioactive heating due to decay of radioactive elements.