Conestoga Formation
| Conestoga Formation | |
|---|---|
| Stratigraphic range: Middle Cambrian to Early Ordovician | |
 Thick-bedded crystalline limestone passing into finely laminated slaty limestone typical of the Conestoga, in quarry 1 mile northwest of Bellemont. | |
| Type | sedimentary, metamorphic |
| Overlies | Vintage Dolomite |
| Lithology | |
| Primary | limestone |
| Other | phyllite, conglomerate |
| Location | |
| Region |  Pennsylvania |
| Country |  United States |
| Type section | |
| Named by | Knopf and Jonas (1923) |
The Conestoga Formation is a geologic formation in Pennsylvania.
Description[edit]
Light-gray, thin-bedded, impure, contorted limestone having shale partings; conglomeratic at base; in Chester Valley, includes micaceous limestone in upper part, phyllite in middle, and alternating dolomite and limestone in lower part.[1]
Type section[edit]
Named from outcrops along Conestoga River, Lancaster County, Pennsylvania.
References[edit]
- ^ Conestoga Formation, USGS Mineral Resources On-Line Spatial Data