Honolulu Volcanic Series

The Honolulu volcanic series is a set of monogenetic volcanic events on the Hawaiian island of Oahu. The events, which have been dated to between 800,000 and 30,000 years before the present, created several notable island features, including Diamond Head, the Punchbowl Crater, Hanauma Bay, Mānana Island and the youngest, Koko Crater. Most people don't consider those craters as volcanoes. They are thought to be extinct vents of the Ko'olau Range.[1][2]

The composition of this volcanic outflow is significantly different from that of the older eruptions that created most of the island.[3]


  1. "Potassium-Argon Dating of Holocene Basalts of the Honolulu Volcanic Series". Geological Society of America. December 18, 1970. Retrieved 2011-10-23.
  2. "Hanauma Bay geology". Honolulu.gov. Retrieved 2011-10-23.
  3. Gordon Andrew Macdonald; Agatin Townsend Abbott; Frank L. Peterson (1983). Volcanoes in the sea: the geology of Hawaii. University of Hawaii Press. p. 420. ISBN 978-0-8248-0832-7. Retrieved 23 October 2011.
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