| 词条 | Saginaw Group |
| 释义 |
| name = Saginaw Group | image = | caption = | type = Group | age = Carboniferous | prilithology = | otherlithology = | namedfor = | namedby = | region = {{Flag|Michigan}} | country = {{Flag|United States}} | coordinates = | unitof = | subunits = | underlies = | overlies = | thickness = | extent = | area = | map = | map_caption = }} The Saginaw Group is a geologic group in Michigan composed of sedimentary rock deposited during the Pennsylvanian Period (circa 323.2 million years ago to 298.9 million years ago. Saginaw group rocks include sandstone, shale, coal, and limestone of fresh water, brackish, and marine origin. Fossils dating back to the Penssylvanian Period (Late or Upper Carboniferous period) can be found in Saginaw Group formations. See also{{Portal|Earth sciences|Michigan|Paleontology|Carboniferous|Paleozoic}}
References
1 : Geologic groups of Michigan |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。