| 词条 | Waldron Shale |
| 释义 |
| name = Waldron Shale | image = | caption = | type = Formation | age = Homerian[1] | period = Homerian | prilithology = | otherlithology = | namedfor = | namedby = | region = | country = United States | coordinates = | unitof = | subunits = | underlies = Lego Limestone and Louisville Limestone | overlies = Laurel Formation and Salamonie Dolomite | thickness = | extent = Indiana, Kentucky, and Mississippi | area = | map = | map_caption = }} The Waldron Shale is a geologic formation in Indiana. It preserves fossils dating back to the Silurian period. See also
References1. ^[https://www.researchgate.net/profile/Frank_Ettensohn/publication/281392122_The_Silurian_of_central_Kentucky_USA_Stratigraphy_palaeoenvironments_and_palaeoecology/links/55e9bcc508ae21d099c327df.pdf The Silurian of central Kentucky, U.S.A.: Stratigraphy, palaeoenvironments and palaeoecology]
3 : Silurian Indiana|Silurian Alabama|Homerian |
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