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Koko Head (at 642 ft or 196 m) is an ancient tuff cone that is somewhat dwarfed by its neighboring tuff cone, Koko Crater, with its peak, Kohelepelepe (or Puʻu Mai), rising to 1208 ft or 368 m. Koko Head itself has three significant depressions or old vents, the largest of which forms the well-known Hanauma Bay.
Koko Crater, Hanauma Bay and other nearby tuff cones form the Koko Rift Zone, which marks the latest episode of volcanic activity on the island of Oahu. [1] Radiocarbon dating suggests that the latest eruption within the Koko Rift Zone occurred 7,000 years ago, [1] although the validity of these results are disputed. [2]
Koko Head was formed by the Koko Tuff. Later explosion craters, such as Hanauma Bay, developed within Koko Head. [41] Koko Crater was also the source of an ash layer that covers the surrounding terrain, [142] and of pyroclastic density flows. [143] After Koko Head had formed, a second volcanic explosion generated another crater on its eastern ...
Mar. 2—City officials say they are moving forward with a project to remove the steel platform atop Koko Crater Stairs due to major safety concerns. The city said in response to the Kokonut ...
After hundreds of thousands of years of dormancy, Koʻolau volcano began to erupt again. Some thirty eruptions over the past 500,000 years or so have created many of the landmarks around eastern Oʻahu, such as Diamond Head, Koko Head (Hanauma Bay), Koko Crater, Punchbowl Crater, Tantalus, and Āliapaʻakai, and are collectively known as the Honolulu Volcanic Series, or simply Honolulu ...
This is a really big voluminous eruption,” Ken Hon, the head scientist at USGS’s Hawaiian Volcano Observatory said in a livestream chat. “It was a fairly rapid onset for one of these eruptions.
Honolulu firefighters rescued an injured man from the Koko Head Crater Trail in Hawaii Kai early this afternoon. The Honolulu Fire Department got the 911 call for the hiker in distress at 12:59 p ...
These eruptions are known as the Honolulu Volcanic Series, which also created other nearby tuff cones such as the famous Diamond Head. Pyroclastic units in Hanauma Bay indicate that both the craters of Hanauma and Kahauloa likely had overlapping eruptions at one point.