Round Top
Round Top | |
---|---|
![]() ![]() Round Top | |
Highest point | |
Elevation | 1,764 ft (538 m) NAVD 88[1] |
Coordinates | 37°51′00″N 122°11′34″W / 37.850084094°N 122.192822678°WCoordinates: 37°51′00″N 122°11′34″W / 37.850084094°N 122.192822678°W[1] |
Geography | |
Location | Contra Costa County, California, U.S. |
Parent range | Diablo Range |
Topo map | USGS Oakland East |
Round Top is an extinct volcano in the Berkeley Hills, just east of Oakland, California. The peak lies entirely within the bounds of Contra Costa County. In 1936, the area surrounding the peak was established as Round Top Regional Park, one of the first three parks of the East Bay Regional Parks District. The park was renamed Sibley Volcanic Regional Preserve for the second president of the park district (1948 to 1958), Robert Sibley, shortly after his death in 1958.
The eruptions that lead to Round Top started 10.2 Million years ago[2] and ended more than a million years later.[3] Two main vents of the old volcano are known, one is now under the Lawrence Berkeley National Laboratory, the other is Round Top. The Round Top vent has, over the years, fallen sideways.[4]
See also[]
References[]
- ^ a b "Round Top". NGS data sheet. U.S. National Geodetic Survey. Retrieved 2009-08-16.
- ^ Slack, Gordy (April 1, 2005). "Voice of the Volcano". Bay Nature. Retrieved April 18, 2021.
- ^ Rademacher, Horst (January 6, 2012). "From the Inside Out". Bay Nature. Retrieved April 19, 2021.
- ^ Slack, Gordy (April 1, 2005). "Voice of the Volcano". Bay Nature. Retrieved April 18, 2021.
External links[]
- "Round Top". Geographic Names Information System. United States Geological Survey. Retrieved 2009-08-16.
- "Sibley Volcanic Regional Preserve". East Bay Regional Parks District. Retrieved 2009-08-16.
- "A Self-guided Tour of Round Top Volcanoes" (PDF). East Bay Regional Parks District. Retrieved 2017-10-12.
- "A Self-guided Tour of Round Top Volcanoes (continued)" (PDF). East Bay Regional Parks District. Retrieved 2017-10-12.
- Volcanoes of California
- Berkeley Hills
- Landforms of Contra Costa County, California
- Mountains of the San Francisco Bay Area
- Extinct volcanoes
- East Bay Regional Park District
- Parks in Contra Costa County, California
- Contra Costa County, California geography stubs