| 词条 | Santiago Formation, California |
| 释义 |
| name = Santiago Formation | image = | caption = | type = Formation | age = Late Eocene-Late Oligocene (Uintan-Duchesnean) | period = Oligocene | prilithology = Siltstone | otherlithology = | namedfor = | namedby = | region = California | country = United States | coordinates = {{coord|33.1|N|117.3|W|display=inline,title}} | paleocoordinates = {{coord|33.3|N|104.1|W|display=inline}} | unitof = | subunits = | underlies = | overlies = | thickness = | extent = | area = | map = | map_caption = }} The Santiago Formation is a geologic formation in California. It preserves fossils dating back to the Late Eocene to Late Oligocene periods (Uintan to Duchesnean).[1] See also{{Portal|Earth sciences|California|Paleontology|Paleogene|Prehistory of North America}}
References1. ^Kelly Ranch Core at Fossilworks.org Further reading
6 : Geologic formations of the United States|Paleogene California|Duchesnean|Uintan|Siltstone formations|Fluvial deposits |
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