The data dictionary contains definitions of the sediment's geological, physical, and chemical characteristics incorporated in the database. An example may be seen again here in table 4 from the data dictionary section. These definitions are also available in the Access version of the database in the status bar of the "datasheet view" or in the description field of the "design view".
The Pontchartrain database fields (see appendix
D to download database) are a subset of those in the Master Data Dictionary (Buchholtz ten Brink and
others, unpub. data, maintained at the USGS Coastal and Marine Geology Field
Center, Woods Hole, MA 02543). The Pontchartrain data dictionary is downloadable
here (Microsoft® Excel) with three sets of parameter descriptors: a short version, an
intermediate-length version, and a full description. In the database, these parameters are
divided into eight tables: