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?