Vasquez Formation | |
---|---|
Stratigraphic range: Late Oligocene-Early Miocene (Arikareean) ~ | |
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 |
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).