7 



8 



I 2 3 4 5 6 



KAXH TRAVEL-TIME CURVES 



Mn i K- — critical _^ x u_ r seismometers-? 



■i2J ■ « d i stance ^ir^ S . .^— ■ 



'^ --reflected ray__V- — --r : - Vi 1 ~ ' 



10 II 



No I 



ishotpoint 



direct ray 

 lower velocity layer 

 efracted ray 



jismome 

 Recorded on 

 Channel No. 



RAY- PATH DIAGRAM 



deeper— 

 i from~ 



dealized 

 reflection 

 horizon such as 

 • shown in fig. 7 — 



'9-0 ^iTime break 



568 



ASSOCIATED IDEALIZED SEISMOGRAM 



( ONLY FIRST BREAKS AND REFLECTIONS SHOWN ) 



Ficure 26-6 



