Back Dorsal de Norfolk Catalan Norfolk Ridge CEB Norfolk Ridge German Ride de l'île de Norfolk French Dorsale Norfolk Italian Grzbiet Norfolski Polish Norfolk Sırtı Turkish
| Norfolk Ridge | |
|---|---|
| Stratigraphic range: | |
The Norfolk Ridge in relation to other Pacific Ocean seafloor features. The Zealandia continental margin is shown in black. | |
| Lithology | |
| Primary | Mesozoic basement |
| Other | Limestone, mudstone with andesite, trachyandesite, shoshonite lavas |
| Location | |
| Coordinates | 27°00′S 167°30′E / 27°S 167.5°E[2] |
| Region | South Pacific |
| Extent | 1,500 km (930 mi) |
| Type section | |
| Named for | Norfolk Island |
| Year defined | 2023 |
| Region | South Pacific Ocean |
The Norfolk Ridge (Norfolk Island Ridge, Norfolk Rise, South New Caledonia Ridge[2]) is a long submarine ridge running between New Caledonia and New Zealand, about 1,300 km (810 mi) off the east-coast of Australia.[3]
It is part of a complex region of ridges between the oceanic crust of the Pacific plate and the continental crust of Australia. Little has been known about the Norfolk Ridge; however, it generally lies about 1,000–1,200 m (3,300–3,900 ft) below sea level and consists of Late Cretaceous continental crust.[4] It is part of Zealandia, a continent that was submerged 60-85 million years ago.[5][6][7]
- ^ Collot et al. 2023.
- ^ a b Cite error: The named reference
MGwas invoked but never defined (see the help page). - ^ Eade 1988.
- ^ Collot et al. 2023, 2.2 Physiography and Geology of Norfolk Ridge.
- ^ Patriat et al. 2019.
- ^ Mortimer et al. 2020.
- ^ Nairn, Stehli & Uyeda 2013.