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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Gurmeet Singh posted an Question
December 18, 2020 • 15:54 pm
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30 points
30 points
- IIT JAM
- Geology (GG)
Question no. 164
164. Earthquakes with focus deeper than 650 km e drainage pattern which signifies an area king structural control is: B. rectangular D. trellis are not observed because: A No brittle material is present deeper than that depth radial dendritic (PU-2013) Scanned by CamScann 5 H Geology B. Seismic waves travelling from deeper parts 171. Dolostone is formed by addition of do not reach on surface limestone ACalcium B. Iron D. Magnesium C. Liquid mantle does not allow S-waves to propagate D. Instruments are not capable to record earthquakes from deeper parts CSodium (PU-2012 uire 172. Which one of the following 1s not a require (PU2012 ment for coral reef growth?
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Owishi Sarkar Best Answer
The answer for 164 is A) no brittle material is generally found below 650km. The other options are not correct as Seismic waves from deeper sections do reach the surface and the lower mantle is not in complete liquid state so as to hinder S waves.
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Sajan sarthak![best-answer]()
EARTH QUAKE GENERALLY OCCURS DUE TO BRITTLE FAULT ENERGY RELEASE SO 650 KM DEPTH IT HAS NO BRITTLE ZONE ITS LIKE DUCTILE SO MO EARTH QUAKE.