| Stadium Conglomerate | |
| Type: | Geologic formation |
| Age: | Eocene |
| Period: | Eocene |
| Prilithology: | Conglomerate |
| Namedfor: | San Diego Stadium |
| Region: | San Diego County, California |
| Underlies: | Mission Valley Formation |
| Overlies: | Friars Formation |
The Stadium Conglomerate is a geologic formation in San Diego County, California.[1] [2] It is found at the northern end of Mission Valley near Snapdragon Stadium.
The formation consists of a massive cobble conglomerate with a dark yellowish-brown coarse-grained sandstone matrix.[1] The conglomerate has dispersed lenses of fossiliferous crossbedded sandstone.[1]
It overlies the Friars Formation, and underlies the sandstone Mission Valley Formation.[1]
It preserves fossils dating back to the Eocene epoch of the Paleogene period, during the Cenozoic Era.[3] The fossils include calcareous nanoplankton.[1]