\f1) Delineate the boundaries between seismic layers 1 and 2; 2 and 3; and 3 and 4 on each of the four seismic profiles. Please use different colored pencils or highlighters to trace the boundaries, and don't forget to indicate somewhere which color represents which boundary (i.e. provide a legend). 2) Identify and trace out any inclined (fault?) reflectors within the upper or lower crust. You will need to use a different color(s) for this. In total you will have at least four different colors between objective #1 and #2. 3) Finally, you are also tasked with calculating the thickness of seawater (depth of the seafloor); layer 1, layer 2, layer 3, and for kicks determine the penetration depth into the mantle (i.e. below the MOHO). To do this you need to know the P-wave velocities through each layer and seawater. During class we saw that: seawater = 1.5 km/s; seismic layer 1 = 2.5 km/s; seismic layer 2 = 6 km/s; seismic layer 3 = 7 km/s; and seismic layer 4 = 8 km/s. Don't forget that your seismic profiles show 2 way travel time along the y-axis