README FILE 

These files contain the digital version of USGS Open-file report 00-110 and
the digital data for dc resistivity soundings made in the Boulder Basin
watershed in Jefferson and Lewis and Clark Counties, Montana. 

CONTENTS AND DATA ORGANIZATION

The following are directories (caps) and a general description of files
contained in those directories.

readme.txt               - this readme file in ascii
readme.pdf               - this readme file in pdf format

REPORT

     ofr00110.pdf - pdf format open file report, main body
     ofr00110.wpd - wordperfect 8/9 open file report, main body

     appendix.pdf  - pdf appendix A containing plots and data files
     appendix.wpd  - wordperfect 8/9 appendix A

PLOTS          - jpg formated plots of sounding data and interpretation as
given
               in appendix A

     mtamlxx.jpg     - individual files where xx is the sounding number



DATA      - ascii files for the dc sounding field data and interpreted
          models

     mtaml.rxp    - binary data file for INTERPEX interpretation program

     dataxx.txt      - file name where xx is the number of the dc sounding

      example file contents

MTAML01F         7/16/97           <------ sounding number, date
    No.   SPACING    RESISTIVITY         - field data with separation in 
    1       0.9100     717.0000              meters and measurements of
    2       1.2200     661.0000              apparent resistivity in  
    3       1.8300     442.0000              ohm meters
    |          |         |
   18      60.9600      73.0000
MTAML01F MODEL                     <------ interpreted model 
LAYER   RESISTIVITY  THICKNESS          - layer resistivities in ohm meters
    1  1.24088E+03  3.64000E-01              and thickness in meters
    2  1.35492E+03  1.60752E-01
    |       |          |
   13  4.28554E+01  8.98549E+00
   14  6.44841E+01  1.29537E+01
   15  1.04769E+02