| ref | Bibliographic references with online linkage and digital object identifier, where available. |
| table2r | Table linking citations found in table 2 with the corresponding references in the bibliography. |
| basement | Basement domains of the conterminous US and Alaska |
| reflink | Associative table linking records of the basement table with bibliographic entries in the ref table. |
| domain_fips | US Counties overlying each basement domain |
| table2 | Geological environments and anticipated mineral endowments of crust types listed in the database. Table 2 from the report. |
| ds898_xml | Systematic representations in XML and JSON containing the attributes, geographic overlaps, and bibliographic references associated with each basement domain. |
| datadxny | Data dictionary, explaining tables and fields |
