| Vasquez Formation | |
|---|---|
| Stratigraphic range: Late Oligocene-Early Miocene (Arikareean) ~ | |
.jpg) The Vasquez Formation at Vasquez Rocks Natural Area | |
| Type | Formation |
| Sub-units | Subdivision |
| Underlies | Paradise Springs Formation & Tick Canyon strata |
| Overlies | San Francisquito Formation, Triassic Mount Lowe intrusive suite & Jurassic syenite (basement) |
| Thickness | 3,810 m (12,500 ft) |
| Lithology | |
| Primary | Conglomerate, sandstone |
| Other | Basalt, andesite, rhyodacite, rhyolite, trachyandesite, limestone |
| Location | |
| Coordinates | 34°28′48″N 118°19′00″W / 34.48000°N 118.31667°W |
| Region | Los Angeles County, California |
| Country |  United States |
| Extent | Vasquez Rocks Natural Area, Sierra Pelona Ridge, San Gabriel Mountains Punchbowl Block & Soledad Basin |
| Type section | |
| Named for | Tiburcio Vasquez |
| Named by | Sharp |
| Year defined | 1935 |
  Vasquez Formation (the United States)  Vasquez Formation (California) | |
The Vasquez Formation (Tvz) is a geologic formation cropping out at the eponymous Vasquez Rocks in southern California. The formation dates to the Late Oligocene to Early Miocene (Arikareean in the NALMA classification).