Cook Strait Cook Strait Cook Strait () is a strait that separates the North and South Islands of New Zealand. It connects the Tasman Sea on the northwest with the South Pacific Ocean on the southeast, and runs next to the capital city, Wellington. It is wide at its narrowest point, and is considered one of the most dangerous and unpredictable waters in the world. The strait is named after James Cook, the first European commander to sail through it, in 1770. In Māori it has the name "Raukawa" or "Te Moana-o-Raukawa". "Raukawa" may mean "bitter leaves". In Māori legend, Cook Strait
Geology of New Zealand batholith dividing the Western and Eastern Provinces. Before Zealandia's separation from Gondwana it stretched from Queensland, through what is now New Zealand, into West Antarctica. It marks the site of a former subduction zone on the edge of Gondwana. The Eastern Province underlies more of New Zealand than the Western Province, including the greywacke and schist of the Southern Alps and all of the basement rocks of the North Island. The Eastern Province contains seven main terranes, the Drumduan, Brook Street, Murihiku, Dun Mountain-Maitai, Caples, Torlesse Composite (Rakaia, Aspiring and Pahau terranes) and Waipapa Composite (Morrinsville and Hunua Terranes). They