Question $4$

a$)$ Mention four assumptions made in the seismic refraction method

b$)$ How would you determine dipping beds using seismic refraction method?

c$)$ Figure I below is a diagram showing a plot from a seismic refraction survey data.

From the plot determine $($i$)$ The number of layers $($ii$)$ The thickness of the first layer

$($iii$)$ What interpretation can you draw from the third trend line?

$(20$ Marks$)$

Figure $1$: Field Refraction Survey Data Plots