Lyttelton Volcano (11 – 9.7 Ma)
"Lyttelton Volcanics formed in the Late Miocene between 11.0 and 9.7 Ma of hawaiite, subordinate basalt, mugearite lava flows and interbedded sediments. It is currently hypothesised that Lyttelton Volcano had two distinct centres, Lyttelton 1 at the Head of the Bay (11.0 – 10.4 Ma) and Lyttelton 2 in Charteris Bay (10.4 – 9.7 Ma)"
Hampton, S. J. (2010), https://ir.canterbury.ac.nz/handle/10092/4117
"The Mangakino caldera complex (other names are Mangakino volcanic center, Mangakino Caldera) is the westernmost and one of oldest extinct rhyolitic caldera volcanoes in the Taupō Volcanic Zone of New Zealand's North Island. It produced about a million years ago (1 Ma) in the Kidnappers eruption of 1,200 km3 (287.9 cu mi), the most widespread ignimbrite deposits on Earth being over 45,000 km2 (17,000 sq mi) and was closely followed in time by the smaller 200 km3 (48.0 cu mi) Rocky Hill eruption."
"Ruru, Maungakawa, Te Tāpui – These three
symmetrical cones are about 500m high, lie
in a distinct line and erupted about 6 MYA.
Deeply eroded andesitic boulders left from
lava flows are strewn over all three cones."
"Maungatapu – This rounded hill is an
eroded volcanic cone, the youngest of the
Kiwitahi volcanoes. The remains of basaltic
andesite lava flows are visible across the
surface."
Maungaturoto is a 282 metres (925 ft) high[1] basaltic scoria cone, in the Kaikohe-Bay of Islands volcanic field in New Zealand.
"In the last half-million years, 12 small basalt volcanoes have erupted in the southern part of the field (Smith
et al. 1993), forming a cluster of scoria cones around Kaikohe. Te Puke volcano erupted in the hills
behind Waitangi 100 000 years ago, forming three small cones and a spreading flow that now underlies
Waitangi golf course and treaty grounds. The youngest volcano is Tauanui, 10 km south of Kaikohe, which
60 000 years ago produced a high scoria cone and a lava flow that flowed 19 km down the Taheke Valley
towards the Hokianga Harbour. The field includes a small rhyolite dome (Putahi), overlooking Lake
Omapere. The field should still be considered dormant, and not extinct."
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