Vertical Effective Stress, a (psi) 



vo 



10 



12 



14 



16 



20 



\ ' ' 



1 1 1 1 1 



- 



40 



- 





- 



60 



- 



N. Box A (Box B is similar) 



- 



80 



- 





- 



100 

 1 oc\ 



i I 



I l I 1 I 



- 



Figure 6. Estimated overburden stress, a , as a function of sub-bottom depth. 



13 



