Rock Stream Formation

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 in New York. It preserves fossils dating back to the Devonian period.

See also

• List of fossiliferous stratigraphic units in New York

References

1. "Sonyea Group". USGS. Retrieved 17 September 2015.

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
• Rickard, L.V.; Isachsen, Y.W.; Fisher, D.W. (1970). "Geologic map of New York: Finger Lakes sheet". New York State Museum. Retrieved 17 September 2015.
• Bergin, M. J. (1964). "Bedrock Geology of the Penn Yan and Keuka Park Quadrangles New York". 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". Journal of Sedimentary Research. 69. SEPM Society for Sedimentary Geology: 909–925. doi:10.2110/jsr.69.909. Retrieved 22 September 2015.