Round Top
Highest point
Elevation1,764 ft (538 m) NAVD 88[1]
Coordinates37°51′00″N 122°11′34″W / 37.850084094°N 122.192822678°W / 37.850084094; -122.192822678[1]
Geography
Round Top is located in California
Round Top
Round Top
Round Top is located in the United States
Round Top
Round Top
Round Top (the United States)
Parent rangeDiablo Range
Topo mapUSGS 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 led 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.[2]

See also

References

  1. 1 2 "Round Top". NGS Data Sheet. National Geodetic Survey, National Oceanic and Atmospheric Administration, United States Department of Commerce. Retrieved 2009-08-16.
  2. 1 2 Slack, Gordy (April 1, 2005). "Voice of the Volcano". Bay Nature. Retrieved April 18, 2021.
  3. Rademacher, Horst (January 6, 2012). "From the Inside Out". Bay Nature. Retrieved April 19, 2021.


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