USGS Scientific Investigations Map 2838

Surficial geologic map of the Northwest Memphis quadrangle, Shelby County, 
Tennessee, and Crittenden County, Arkansas

By Jason Broughton and Roy Van Arsdale

This geospatial database has been approved for release and publication by the 
Director of the USGS.  Although this database has been subjected to rigorous 
review and is substantially complete, the USGS reserves the right to revise the 
data pursuant to further analysis and review.  Furthermore, it is released on 
condition that neither the USGS nor the United States Government may be held 
liable for any damages resulting from its authorized or unauthorized use.

The database can be downloaded from http://pubs.usgs.gov/.  ArcInfo export files 
and ArcView shapefiles are included in a gzipped tar archive and a Windows zip 
archive.  Identical files are included in both compressed archive files.  In 
addition, an Adobe Portable Document Format (PDF) file may be downloaded, from 
which a paper copy may be printed.

Please refer to the file 2838.met for metadata documentation for this
geospatial database.

List of files:

2838.pdf (PDF of map)

2838_508.pdf (508-accessible PDF of map text)

2838.met

2838.tar.gz or 2838.zip:

  00README.txt

  2838.met

  database files:

    e00 directory:
      nwgeolt: polygon coverage of geologic units and contacts
      nwcrosst: line coverage of cross sections 
    shapefiles directory:
      nwgeoltp.shp (contains polygon attributes for nwgeolt database)
      nwgeoltp.shx
      nwgeoltp.dbf
      nwgeoltl.shp (contains line attributes for nwgeolt database)
      nwgeoltl.shx
      nwgeoltl.dbf
      nwcrosst.shp (contains line attributes for nwcrosst database)
      nwcrosst.shx
      nwcrosst.dbf

2838_bases.tar.gz or 2838_bases.zip

  base-map images:
    nwr.tif (topography, planimetry, and drainages)
    nwr.tfw
    nw_wr.tif (open water)
    nw_wr.tfw