| 词条 | Dugger Formation |
| 释义 |
| name = Dugger Formation | image = | caption = | type = Formation | age = Pennsylvanian | period = Pennsylvanian | prilithology = | otherlithology = | namedfor = | namedby = | region = Indiana | country = United States | coordinates = | unitof = Carbondale Group | subunits = | underlies = Shelburn Formation | overlies = Petersburg Formation | thickness = | extent = | area = | map = | map_caption = }} The Dugger Formation is a geologic formation in Indiana.[1] References1. ^ [https://igws.indiana.edu/IGNIS/GeneralizedStratigraphicColumn.pdf Generalized Stratigraphic Column of Indiana Bedrock] {{Indiana-geologic-formation-stub}} 1 : Geology of Indiana |
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