| Eskridge Shale | |
| Type: | Formation |
| Age: | Early Permian |
| Period: | Early Permian |
| Prilithology: | mudstone paleosol |
| Otherlithology: | marine shale |
| Namedfor: | Eskridge, Kansas |
| Region: | Kansas, Oklahoma, Nebraska |
| Country: | United States |
| Unitof: | Council Grove Group |
The Eskridge Shale or Eskridge Formation is an Early Permian geologic formation in Kansas. Its outcrop runs north–south through Kansas, extending into Oklahoma and Nebraska.[1] While named a shale, it features extensive, spectacular red and green stacked palosol mudstones, these mudstones showing prominent vertical tubular carbonate concretions, possibly from roots or vertebrate burrows.