| Java Formation | |
| Type: | Formation |
| Age: | Late Devonian |
| Period: | Late Devonian |
| Country: | United States |
| Underlies: | Ohio Shale |
| Overlies: | West Falls Formation |
The Java Formation is a geologic formation in Kentucky, New York, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia. It preserves fossils dating back to the Devonian period.[1] The formation comprises the Pipe Creek Shale, Wiscoy Sandstone Member in New York, and Hanover Shale Member except in Tennessee.[2]