Diamond Head is a part of the complicated of cones, vents, and their associated eruption flows which are collectively recognized to geologists as the Honolulu Volcanic Sequence, eruptions from the Ko?olau Volcano that happened lengthy after the volcano fashioned and had gone dormant. The Honolulu Volcanic Sequence is a sequence of volcanic eruption events that created lots of O?ahu's well-recognized landmarks, including Punchbowl Crater, Hanauma Bay, Koko Head, and Manana Island along with Diamond Head.

Diamond Head, like the rest of the Honolulu Volcanics, is much younger than the main mass of the Ko?olau Mountain Range. While the Ko?olau Range is about 2.6 million years previous, Diamond Head is estimated to be about one hundred fifty,000 years outdated and extinct for one hundred fifty,000 years.

 
Diamond Head, Punchbowl Crater and Honolulu from Na Pueo parkThe eruption that constructed up Diamond Head was in all probability very transient, lasting no various days. It was in all probability explosive, since when the cinder cone was originally formed, the ocean degree is assumed to have been increased and the vent burst erupted over a coral reef. Another issue probably contributing to the eruption's explosive nature was that rising magma would have come into contact with the water table. The eruption's relatively brief length is assumed to elucidate why the cone immediately is so symmetrical.

A close-by eruption that happened at about the same time as the Diamond Head eruption was the eruption that constructed the Black Level lava shield. Since the type of eruptions that constructed Diamond Head are typically monogenetic, geologists don't believe Diamond Head will erupt once more

 

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