| 词条 | Bond Formation |
| 释义 |
| name = Bond Formation | image = | caption = | type = Formation | age = Pennsylvanian | period = Pennsylvanian | prilithology = | otherlithology = | namedfor = | namedby = | region = Illinois and Indiana | country = United States | coordinates = | unitof = McLeansboro Group | subunits = | underlies = Mattoon Formation | overlies = Patoka Formation | thickness = | extent = | area = | map = | map_caption = }} The Bond Formation is a geologic formation in Illinois. It preserves fossils dating back to the Carboniferous period. See also
References
2 : Carboniferous Illinois|Carboniferous southern paleotropical deposits |
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