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Crater Lake, Mt Ruapehu, Tongariro National Park, Ruapehu District, Manawatu-Wanganui Region, New Zealandi
Regional Level Types
Crater LakeLake
Mt RuapehuMountain
Tongariro National ParkNational Park
Ruapehu DistrictDistrict
Manawatu-Wanganui RegionRegion
New ZealandCountry

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Key
Latitude & Longitude (WGS84):
39° 16' 51'' South , 175° 33' 51'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Waiouru1,347 (2015)23.6km
Turangi3,401 (2012)38.6km


Further geologic information is reported under Mount Ruapehu.

The Whakapapa Formation, consists of young post glacial lava flows, autoclastic breccia, and pyroclastics which erupted from at least six vents. Rocks from five vents have been given a member status (Hackett, 1985).

The Iwikau Member consists of thin lava flows, autoclastic breccia, and pyroclastics, dipping radially from the summit plateau, variably welded, some pumiceous to moderately vesicular dacites, and airfall ejecta. Lava flows have extended up to 8.5 kilometres from the vent, situated on the north-west slope of the volcano.

The Rangataua Member consists of lava flows, and pyroclastics. The lava consists of andesite with dark grey and black matrices. This is overlain with pyroclastics of shower bedded lapilli tuffs containing red scoria bombs.

The Toma Member consists of lava flows and minor pyroclastics, consisting of dark grey andesite, with minor shower bedded lapilli tuff.

The Pinnacle Ridge Member consists of welded breccias and tuff, with a steep primary dip, moderately vesicular to pumiceous.

The Crater Lake Member in the vicinity of Crater Lake of a complex origin, modified by glacial and volcanic explosive episodes. Pyramid Peak is mentioned in the source as a tephra mound of thin lava flows with tuff breccia, oxidised scoria bomb layers to 0.5 metres, welded breccia and tuffs, and shower bedded units. These deposits form a mantle over the rim of the tephra cone. Most of the lake area shows coarse airfall and basaltitic ejecta, and minor thin lava flows. Some black glassy bombs have been exploded, traveling up to 3 kilometres from the vent.


Regions containing this locality

Australian Plate (Australia Plate)Tectonic Plate
North Island, New ZealandIsland

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


1 valid mineral.

Detailed Mineral List:

Carnallite
Formula: KMgCl3 · 6H2O
Reference: Railton, G.L¹., Watters, W.A. (1990) Minerals of New Zealand. New Zealand Geological Survey Bulletin 104, 89 pages. (¹published as G.L. Railton but his initials should be G.T. not G.L. - Errata sheet inserted in publication).

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
Carnallite3.BA.10KMgCl3 · 6H2O

List of minerals arranged by Dana 8th Edition classification

Group 11 - HALIDE COMPLEXES
AmBX3
Carnallite11.1.2.1KMgCl3 · 6H2O

List of minerals for each chemical element

HHydrogen
H CarnalliteKMgCl3 · 6H2O
OOxygen
O CarnalliteKMgCl3 · 6H2O
MgMagnesium
Mg CarnalliteKMgCl3 · 6H2O
ClChlorine
Cl CarnalliteKMgCl3 · 6H2O
KPotassium
K CarnalliteKMgCl3 · 6H2O

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Hackett, W.R. (1985) Geology and Petrology of Ruapehu Volcano and related vents. Unpublished Ph.D. Thesis, Victoria University of Wellington, New Zealand.
Railton, G.L¹., Watters, W.A. (1990) Minerals of New Zealand. New Zealand Geological Survey Bulletin 104, 89 pages. (¹published as G.L. Railton but his initials should be G.T. not G.L. - Errata sheet inserted in publication).


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