The publishers apologize for an error that occurred in the relettering of Fig. 3. The figure should appear as below.
Fig. 1.
Reduced travel-time sections of (a) shot S810 recorded along line 7, (b) shot S801 along line 8, and (c) shot S801 along line 9. The seismograms have been subjected to a 5-25 Hz band-pass filter. Reduction velocity = 6.0 km/s. The velocities of interpreted direct and head wave arrivals are given in km/s.
- © Geological Society of London 1986