Z09520200                       USGS 
H09520200       3242231125043000404013SW1507020212.10          1026.            
N09520200       BLACK GAP WASH NEAR AJO, ARIZ.
Y09520200       
309520200       1962        499Bm              6.70  Bm                  
309520200       19630806    280                4.97                      
309520200       19631019    652                8.07                      
309520200       196508      770Bd              8.68  Bd                  
309520200       19660913    445                6.28                      
309520200       19670714    837                9.08                      
309520200       196808      309Bd              5.24  Bd                  
309520200       19690814    525                6.91                      
309520200       19700820   10.02                                         
309520200       19710930    735                8.40                      
309520200       1972       0.00Bm                                        
309520200       1973       0.00Bm                                        
309520200       1974       0.00Bm                                        
309520200       19750908    200                4.35                      
309520200       19760504    297                4.55                      
309520200       19770911    578                7.27                      
309520200       19780115    364                5.66                      
309520200       19790720    940                9.35