Draw the geological cross-section (A-B) using the profile provided.

The topographic profile along line A-B is already provided below the map. Carefully mark the exact points where the line A-B on the map intersects each geological boundary:

• The Ochil Fault.
• The contacts of the Lavas, Old Red Sandstone, d³, and d² units.
• The boundaries of each outcrop of the Nine Foot Seam (the dark oval shapes). Project these marked points vertically downwards onto the topographic line of the profile.