| 词条 | Rognacian Formation |
| 释义 |
| name = Rognacian Formation | image = | caption = | type = Formation | age = Cretaceous | prilithology = | otherlithology = | namedfor = | namedby = | region = | country = France | coordinates = | unitof = | subunits = | underlies = | overlies = | thickness = | extent = | area = | map = | map_caption = }} The Rognacian Formation is a geologic formation in France. It preserves fossils dating back to the Cretaceous period. Geological SettingThe Upper Cretaceous continental deposits in southern France are distributed from the east province to the west. The solid fragmented materials are characteristic of flood plain environments, with special deposits. There are alternating beds of fluvial channels and paleosols. See also{{Portal|Earth sciences|France|Paleontology|Cretaceous|Mesozoic}}
References
1 : Cretaceous France |
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