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Ōkāreka Embayment
The Ōkāreka Embayment (also spelled Okareka or Ōkareka) is a volcanic feature in Taupō Volcanic Zone of New Zealand. Its most significant recent volcanic eruption was about 15,700 years ago and this deposited the widespread Rotorua tephra that reached beyond Auckland. Geography The Ōkāreka Embayment extends from the western margin of Lake Tarawera to include to its north Lake Ōkāreka and in the west Lake Tikitapu and the eastern half of Lake Rotokākahi. Geology Both the Ōkāreka Embayment and the Mount Tarawera, Tarawera volcanic complex are inside the old Ōkataina Caldera, often termed the :Okataina Volcanic Centre, Ōkataina volcanic centre. The caldera forming its eastern boundary has been called the Haroharo Caldera, but as no major single event formed it, this is perhaps better regarded as a general categorisation term, explaining why some maps of the Horahora Caldera include the embayment. Citing It is now regarded as a subsidiary volcanic part of the Ōkata ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kapenga Caldera
The Kapenga Caldera (also known as the Kapenda Volcanic Centre) in New Zealand’s Taupō Volcanic Zone lies in a lowland area immediately south of Lake Rotorua through the Hemo Gap in the Rotorua Caldera rim. Features of the caldera have developed over a period of about 900,000 years. At some time more than 60,000 years ago, Lake Rotorua drained through the Hemo Gap, and part of the Kapenga Caldera floor was likely occupied by a lake, which has been referred to as Kapenga. Geography The Kapenga Caldera has a western boundary defined by the Horohoro Cliffs and an eastern boundary marked by volcanic domes, including those in the Ōkareka Embayment, some of which are buried by the younger activity of the Ōkataina Caldera, Ōkataina Volcanic Centre. The Horohoro Cliffs rise to in what is a mountain range, and the caldera contains Haparangi a volcanic dome that is high. Its southern boundary of volcanic activity is ill-defined but does not extend into areas of continuing low resi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
