Stadium Conglomerate


The Stadium Conglomerate is a geologic formation in San Diego County, California. It is found at the northern end of Mission Valley near Snapdragon Stadium.

Geology

The formation consists of a massive cobble conglomerate with a dark yellowish-brown coarse-grained sandstone matrix. The conglomerate has dispersed lenses of fossiliferous crossbedded sandstone.
It overlies the Friars Formation, and underlies the sandstone Mission [Valley Formation].

Fossil content

It preserves fossils dating back to the Eocene epoch of the Paleogene period, during the Cenozoic Era. The fossils include calcareous nanoplankton.