Maroa

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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 38.42°S
  • 176.08°E

  • 897 m
    2942 ft

  • 241061
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

28 March-3 April 2001

On 30 March the IGNS reported that a moderate-sized hydrothermal explosion occurred in the Alum Lakes area, Wairakei, knocking over trees and destroying vegetation near the crater. Water levels at several of the Alum Lakes had dropped several weeks before the explosion.

Source: New Zealand GeoNet Project



 Available Weekly Reports


2001: March


28 March-3 April 2001

On 30 March the IGNS reported that a moderate-sized hydrothermal explosion occurred in the Alum Lakes area, Wairakei, knocking over trees and destroying vegetation near the crater. Water levels at several of the Alum Lakes had dropped several weeks before the explosion.

Source: New Zealand GeoNet Project


Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
0180 (?) Unknown Confirmed   Tephrochronology Orakeikorako
7050 BCE (?) Unknown Confirmed   Tephrochronology Orakeikorako

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Allis R G, 1984. The 9 April 1983 steam eruption at Craters of the Moon thermal area, Wairakei. New Zeal Dept Sci Ind Res Rpt, 196: 1-25.

Alloway B V, Pillans B J, Carter L, Naish T R, Westgate J A, 2005. Onshore-offshore correlation of Pleistocene rhyolitic eruptions from New Zealand: implications for TVZ eruptive history and paleoenvironmental construction. Quat Sci Rev, 24: 1601-1622.

Brooker M R, Houghton B F, Wilson C J N, Gamble J A, 1993. Pyroclastic phases of a rhyolitic dome-building eruption: Puketarata tuff ring, Taupo volcanic zone, New Zealand. Bull Volc, 55: 395-406.

Brown S J A, Wilson C J N, Cole J W, Wooden J, 1998. The Whakamaru Group ignimbrites, Taupo Volcanic Zone, New Zealand: evidence for reverse tapping of a zoned silicic magmatic system. J Volc Geotherm Res, 84: 1-37.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Kissling W M, Weir G J, 2005. The spatial distribution of the geothermal fields in the Taupo volcanic zone, New Zealand. J Volc Geotherm Res, 145: 136-150.

Nairn I A, Cole J W, 1975. New Zealand. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 22: 1-156.

Spinks K D, Acocella V, Cole J W, Bassett K N, 2005. Structural control of volcanism and caldera development in the transtensional Taupo Volcanic Zone, New Zealand. J Volc Geotherm Res, 144: 7-22.

Spinks K D, Cole J W, Leonard G S, 2004. Caldera volcanism in the Taupo Volcanic Zone. Geol Soc New Zeal, New Zeal Geophys Soc, 26th New Zeal Geotherm Workshop, 6th-9th Dec 2004, Great Lake Centre, Taupo, Field Trip Guides, 7: 110-135.

Wilson C J N, Gravley D M, Leonard G S, Rowland J V, 2009. Volcanism in the central Taupo Volcanic Zone, New Zealand: tempo, styles and controls. In: Thordarson T, Self S, Larsen G, Rowland S K, Hoskuldsson A (eds), {Studies in Volcanology: The Legacy of George Walker}. Geol Soc London, p 225-247.

Wilson C J N, Houghton B F, Lloyd E F, 1986. Volcanic history and evolution of Maroa-Taupo area, central North Island. Roy Soc New Zeal Bull, 23: 194-223.

Wilson C J N, Houghton B F, McWilliams M O, Lanphere M A, Weaver S D, Briggs R M, 1995a. Volcanic and structural evolution of Taupo Volcanic Zone, New Zealand: a review. J Volc Geotherm Res, 68: 1-28.

Wilson C J N, Rogan A M, Smith I E M, Northey D J, Nairn I A, Houghton B F, 1984. Caldera volcanoes of the Taupo volcanic zone, New Zealand. J Geophys Res, 89: 8463-8484.

The 16 x 25 km Maroa caldera formed sometime after 230 thousand years ago (ka) in the NE corner of the 30 x 40 km Whakamaru caldera, which is the largest of the Taupo Volcanic Zone. The Whakamaru caldera partially overlaps with the Taupo caldera on the south and was formed during the eruption of the Whakamaru Group ignimbrites between about 340 and 330 ka. The Maroa caldera was subsequently filled by at least 70 rhyolitic lava domes or flows, mostly erupted along a SW-NE trend. Lesser amounts of basalt were also erupted. The latest dated magmatic eruption took place about 14 ka, when the rhyolitic Puketarata tuff ring and lava domes were formed (Brooker et al., 1993). The Orakeikorako, Ngatamariki, Rotokaua, and Wairakei hydrothermal areas are located within or adjacent to the Whakamaru caldera. Large hydrothermal eruptions have occurred at the Orakeikorako thermal area during the Holocene, the latest immediately prior to the 1800-year-old Taupo eruption.