Potsdam Sandstone
| Potsdam Sandstone | |
|---|---|
| Stratigraphic range: Latest | |
Old Snell Hall at Clarkson University was built with Potsdam Sandstone. | |
| Type | Geological formation |
| Sub-units |
|
| Area | Eastern North America |
| Lithology | |
| Primary | Orthoquartzite |
| Other | Conglomerates, local siltstone lenses |
The Potsdam Sandstone, more formally known as the Potsdam Group, is a geologic unit of mid-to-late Cambrian age found in Northern New York and northern Vermont and Quebec and Ontario. A well-cemented sandstone of nearly pure quartz, in the 19th century it was widely used in construction and in refractory linings for iron furnaces.