Ben Lomond
Obsidian veins at Ben Lomond
Highest point
Elevation744 m (2,441 ft)
Coordinates38°35.7′S 175°57.2′E / 38.5950°S 175.9533°E / -38.5950; 175.9533
Geography
LocationNorth Island, New Zealand
Geology
Mountain typeLava domes
Last eruption100,000 years
Obsidian boulders at Ben Lomond
Obsidian specimen fallen from cliff

Ben Lomond is a rhyolite lava dome near Lake Taupō in New Zealand's North Island. Located about eight kilometres north-northeast of Kinloch, it rises to a height of 744 metres above sea level.

Ben Lomond erupted about 100,000 years ago, producing two lava lobes that flowed around 3.5 kilometres south and southwest from a vent about one kilometre south of Poihipi Road. Much of the lava formed grey banded obsidian as it cooled. Crystalline rhyolite and pumice were also produced.

References

  • Stevenson †, Richard; Dingwell, Donald; Bagdassarov, Nikolai; Manley, Curtis (2001). "Measurement and implication of "effective" viscosity for rhyolite flow emplacement" (PDF). Bulletin of Volcanology. 63: 227. Bibcode:2001BVol...63..227S. doi:10.1007/s004450100137. Archived from the original (PDF) on 3 March 2009.
  • Stevenson, R. J.; Briggs, R. M.; Hodder, A. P. W. (1994). "Physical volcanology and emplacement history of the Ben Lomond rhyolite lava flow, Taupo Volcanic Centre, New Zealand". New Zealand Journal of Geology and Geophysics. 37: 345–358. doi:10.1080/00288306.1994.9514625. Archived from the original on 6 September 2008.
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