Otterdale Formation
The Otterdale Formation is a geologic formation in Virginia. It preserves fossils dating back to the Triassic period.
| Otterdale Formation | |
|---|---|
| Stratigraphic range: Triassic | |
| Type | Geological Formation |
| Unit of | Newark Supergroup |
| Location | |
| Region |  Virginia |
| Country |  United States |
| Type section | |
| Named for | Otterdale, Chesterfield County, Virginia |
| Named by | Shaler and Woodworth, 1899[1] |
It was first identified at exposures near Otterdale, Chesterfield County, Virginia, within the Richmond Basin. Shaler and Woodworth described it as follows:
- Coarse sandstones, often feldspathic, with silicified trunks of Araucarioxylon; well developed north, south, and west of Otterdale. Thickness, 500+ feet.[1]
Petrified tree (Araucarioxylon sp.) on Otterdale Road in 1899.
References
- Shaler, N. S., and Woodworth, J. B., 1899. Geology of the Richmond Basin, Virginia, Washington: Government Printing Office. Google Book
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
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