OF 94-197 REVISION LIST

       Maps of peak horizontal and vertical accelerations recorded 
     for the Northridge, California,  earthquake of January 17, 1994 
            and general geology of the epicentral region 

                             Compiled by

      C.M. Wentworth, R.D. Borcherdt, R.K. Mark, and D.M. Boore 1


                   FIRST RELEASED:                  1994
                   CURRENT VERSION: 1.10    January 1999

SUMMARY

         PARTS                                                  LAST REVISED
                                                                 IN VERSION:
 1. Revision List
      a. of94-197revs     ASCII file                                1.10

 2. Open-File text
      a. of94-197_2a.txt  ASCII file                                1.00

 3. Plot File - Map of Peak Horizontal Acceleration
      a. of94-197_3a.ps.gz    6.6 MB Postscript file compressed     1.10
                                 with gzip                      

 4. Plot File - Map of Peak Vertical Acceleration
      a. of94-197_4a.ps.gz    5.9 MB Postscript file compressed     1.10
                                 with gzip                      

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LIST OF REVISIONS (latest revision first):

1.10  Corrected identity of bedrock units in the western San Gabriel Mts,
      which involved changing erroneous areas of Tertiary or Cretaceous 
      sedimentary rock to Crystalline or Metamorphic rock. No strong-motion
      stations are affected.

      Revised names of files to satisfy naming convention for revisions.