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Polynesia
Polynesia (UK: /ˌpɒlɪˈniːziə/ ⓘ POL-in-EE-zee-ə, US: /-ˈniːʒə/ -EE-zhə) is a subregion of Oceania, made up of more than 1,000 islands scattered over the central and southern Pacific Ocean. The indigenous people who inhabit the islands of Polynesia are called Polynesians. They have many things in common, including linguistic relations, cultural practices, and traditional beliefs.
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".
Polynesia is characterized by a small amount of land spread over a very large portion of the mid- and southern Pacific Ocean. It comprises 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 comprises 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).
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Polynesia
Polynesia (UK: /ˌpɒlɪˈniːziə/ ⓘ POL-in-EE-zee-ə, US: /-ˈniːʒə/ -EE-zhə) is a subregion of Oceania, made up of more than 1,000 islands scattered over the central and southern Pacific Ocean. The indigenous people who inhabit the islands of Polynesia are called Polynesians. They have many things in common, including linguistic relations, cultural practices, and traditional beliefs.
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".
Polynesia is characterized by a small amount of land spread over a very large portion of the mid- and southern Pacific Ocean. It comprises 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 comprises 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).
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