INTRODUCING THE TVC
The type of volcano found in the TVC.
Stratovolcanoes (or composite cones)
This plate subducts beneath the Indo-Australian Plate.
The Pacific Plate
The glacial landform carved by ice in the Mangatepopo Valley.
U-shaped valleys
The desert east of the volcanoes.
Rangipo Desert
This concept of guardianship is central to iwi interaction with the land.
Kaitiakitanga
The latitude at which the TVC is located.
39° S
The type of plate boundary responsible for the TVC.
Convergent boundary
The three zones of a glacier.
Accumulation, transportation, and ablation
The Ōranui (Taupō) eruption occurred this many years ago, expelling around 1,170 km³ of material across the TVC
25,400 years ago
The government act which pre-dates DOC and requires them to foster recreation and tourism.
The National Parks Act 1980
Height of Mt Tongariro (+/- 100m)
1967m
The first major volcanic structure that began forming 250,000 years ago.
Proto-Ngauruhoe
The two key glacial erosion processes that carved Proto-Ngauruhoe.
Plucking and abrasion
The name for shallow depressions in the ground that cover the TVC desert, formed by the wind.
Deflation hollows
The year Tongariro National Park became a UNESCO Dual World Heritage Site.
1993
Height of Mt Ngauruhoe (+/- 100m)
2282m
The trench where TVC-forming subduction takes place.
Hikurangi Trench (+100 bonus for Hikurangi-Tonga-Kermadec Trench)
The material deposited at a glacier’s edge.
Moraines
The name for rock fragments and particles ejected by a volcanic eruption - this covers the desert in the TVC.
Tephra
1887
Height of Mt Ruapehu (+/- 100m)
2797m
The silica content of andesitic magma found at the TVC.
52–63% silica
How much colder temperatures were during the Last Glacial Period.
4–7°C cooler
The type of vegetation adapted to survive harsh, dry conditions in the TVC desert.
The four perspectives DOC now balances.
Environmental, political, cultural, and safety perspectives