# Rock Stream Formation

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Geologic formation in New York, United States

Rock Stream Formation Stratigraphic range: Frasnian Type Formation Unit of Sonyea Group Underlies Cashaqua Shale Overlies Pulteney shale Lithology Primary Siltstone Other Shale Location Region New York Country United States

The **Rock Stream Formation** (or Rock Stream siltstone[1]) is a [geologic formation](/source/Formation_(stratigraphy)) in [New York](/source/New_York_(state)). It preserves [fossils](/source/Fossils) dating back to the [Devonian](/source/Devonian) [period](/source/Period_(geology)).

## See also

- [Earth sciences portal](https://en.wikipedia.org/wiki/Portal:Earth_sciences)
- [New York (state) portal](https://en.wikipedia.org/wiki/Portal:New_York_(state))
- [Paleontology portal](https://en.wikipedia.org/wiki/Portal:Paleontology)

- [List of fossiliferous stratigraphic units in New York](/source/List_of_fossiliferous_stratigraphic_units_in_New_York)

## References

1. **[^](#cite_ref-USGSSonyeaGroup_1-0)** ["Sonyea Group"](https://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=NYDs%3B5). USGS. Retrieved 17 September 2015.

- Various Contributors to the Paleobiology Database. ["Fossilworks: Gateway to the Paleobiology Database"](https://web.archive.org/web/20220325060448/http://www.fossilworks.org/cgi-bin/bridge.pl?action=home). Archived from [the original](https://www.fossilworks.org/) on 25 March 2022. Retrieved 17 December 2021.

- Rickard, L.V.; Isachsen, Y.W.; Fisher, D.W. (1970). ["Geologic map of New York: Finger Lakes sheet"](https://ngmdb.usgs.gov/Prodesc/proddesc_19469.htm). [New York State Museum](/source/New_York_State_Museum). Retrieved 17 September 2015.

- Bergin, M. J. (1964). ["Bedrock Geology of the Penn Yan and Keuka Park Quadrangles New York"](https://pubs.er.usgs.gov/publication/b1161G). *Geological Survey Bulletin* (1161-G). USGS. Retrieved 22 September 2015.

- Schieber, J. (1999). ["Distribution and deposition of mudstone facies in the Upper Devonian Sonyea Group of New York"](https://web.archive.org/web/20120719002357/http://www.shale-mudstone-research-schieber.indiana.edu/sonyea-shales.htm). *Journal of Sedimentary Research*. **69**. SEPM Society for Sedimentary Geology: 909–925. [doi](/source/Doi_(identifier)):[10.2110/jsr.69.909](https://doi.org/10.2110%2Fjsr.69.909). Archived from [the original](http://www.shale-mudstone-research-schieber.indiana.edu/sonyea-shales.htm) on 19 July 2012. Retrieved 22 September 2015.

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