Rock Stream Formation

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.

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

See also

• Earth sciences portal
• New York (state) portal
• Paleontology portal

• List of fossiliferous stratigraphic units in New York