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Polynesia

Subregion of Oceania

  • 32 min read
  • 9 chapters
Map (rough) of Polynesia, Oceania, own work composed from various map references
Hobe / Holger Behr · Public domain

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Through Island, Indigenous peoples and Tradition

The term Polynésie was first used in 1756 by the French writer Charles de Brosses, who originally applied it to all the islands of the Pacific. In 1831, Jules Dumont d'Urville proposed a narrower definition during a lecture at the Société de Géographie of Paris. By tradition, the islands located in the southern Pacific have also often been called the South Sea Islands, and their inhabitants have been called South Sea Islanders. The Hawaiian Islands have often been considered to be part of the South Sea Islands because of their relative proximity to the southern Pacific islands, even though they are in fact located in the North Pacific. Another term in use, which avoids this inconsistency, is "the Polynesian Triangle" (from the shape created by the layout of the islands in the Pacific Ocean). This term makes clear that the grouping includes the Hawaiian Islands, which are located at the northern vertex of the referenced "triangle".

Geography

Geology

Polynesia is characterized by a small amount of land spread over a very large portion of the mid- and southern Pacific Ocean. It consists of approximately 300,000 to 310,000 square kilometres (117,000 to 118,000 sq mi) of land, of which more than 270,000 km2 (103,000 sq mi) are within New Zealand. The Hawaiian archipelago consists of about half the remainder.

Most Polynesian islands and archipelagos, including the Hawaiian Islands and Samoa, are composed of volcanic islands built by hotspots (volcanoes). The other land masses in Polynesia—New Zealand, Norfolk Island, and Ouvéa, the Polynesian outlier near New Caledonia—are the unsubmerged portions of the largely sunken continent of Zealandia.

Zealandia is believed to have mostly sunk below sea level 23 million years ago, and recently partially resurfaced due to a change in the movements of the Pacific Plate in relation to the Indo-Australian Plate. The Pacific plate had previously been subducted under the Australian Plate. When that changed, it had the effect of uplifting the portion of the continent that is modern-day New Zealand.

The convergent plate boundary that runs northwards from New Zealand's North Island is called the Kermadec-Tonga subduction zone. This subduction zone is associated with the volcanism that gave rise to the Kermadec and Tongan islands.

There is a transform fault that currently traverses New Zealand's South Island, known as the Alpine Fault.

Zealandia's continental shelf has a total area of approximately 3,600,000 km2 (1,400,000 sq mi).

The oldest rocks in Polynesia are found in New Zealand and are believed to be about 510 million years old. The oldest Polynesian rocks outside Zealandia are to be found in the Hawaiian Emperor Seamount Chain and are 80 million years old.

Geographical area

Polynesia is generally defined as the islands within the Polynesian Triangle, although some islands inhabited by Polynesians are situated outside that area. Geographically, the Polynesian Triangle is drawn by connecting the points of Hawaii, New Zealand, and Easter Island. The other main island groups located within the Polynesian Triangle are Samoa, Tonga, the Cook Islands, Tuvalu, Tokelau, Niue, Wallis and Futuna, and French Polynesia.

Also, small Polynesian settlements are in Papua New Guinea, the Solomon Islands, the Caroline Islands, and Vanuatu. An island group with strong Polynesian cultural traits outside of this great triangle is Rotuma, situated north of Fiji. The people of Rotuma have many common Polynesian traits, but speak a non-Polynesian language. Some of the Lau Islands to the southeast of Fiji have strong historic and cultural links with Tonga. However, in essence, Polynesia remains a cultural term referring to one of the three parts of Oceania (the others being Melanesia and Micronesia).

Island groups

The following islands and island groups are either nations or overseas territories of former colonial powers. The residents are native Polynesians or contain archaeological evidence indicating Polynesian settlement in the past. Some islands of Polynesian origin are outside the general triangle that geographically defines the region.

Polynesian area

The Line Islands and the Phoenix Islands, most of which are parts of Kiribati, had no permanent settlements until European colonization, but are often considered to be parts of the Polynesian Triangle.

Polynesians once inhabited the Auckland Islands, the Kermadec Islands, and Norfolk Island in pre-colonial times, but these islands were uninhabited by the time European explorers arrived.

The oceanic islands to the east of Easter Island, such as Clipperton Island, the Galápagos Islands, and the Juan Fernández Islands, were in the past formerly categorized on rare occasion as part of Polynesia. No evidence of prehistoric contact with either Polynesians or the indigenous peoples of the Americas has been found.

Outliers

Micronesia

Sub-Antarctic islands

Melanesia

  • Anuta (in Solomon Islands)
  • Bellona Island (in Solomon Islands)
  • Emae (in Vanuatu)
  • Fiji (excluding Rotuma and the Lau Islands)
  • Mele (in Vanuatu)
  • Nuguria (in Papua New Guinea)
  • Nukumanu Islands (in Papua New Guinea)
  • Ontong Java Atoll (in the Solomon Islands)
  • Pileni (in the Solomon Islands)
  • Rennell (in the Solomon Islands)
  • Sikaiana (in the Solomon Islands)
  • Takuu Atoll (in Papua New Guinea)
  • Tikopia (in the Solomon Islands)

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