Catalog
All 450 (461 entered into wiki) named structural geologic features in Illinois are listed alphabetically in this section. Information about the location, references, and a description are provided for each entry. Structural features that are recommended for removal from stratigraphic records are shown as follows: (discarded). These 167 names are also listed in table 2 and not shown on plate 1. The 33 structures that have been renamed (table 3) are shown as follows: (new name). The 33 newly named structural features are indicated by (new) in the catalog and listed in table 4. Map coordinates are also listed. Some structures are part of a larger system or group of structures that are described under separate headings. In such cases the name of the larger group is given below the name of the individual feature. Example: Ancona Anticline is part of the La Salle Anticlinorium.
A stratigraphic column showing units mentioned in this document is shown in figure 7. All oil production figures, except as noted, indicate cumulative production through the end of 1992, and were compiled by Bryan G. Huff (ISGS, personal communication 1992).
