Raised coral atoll in the context of "Rennell Island"

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⭐ Core Definition: Raised coral atoll

A raised coral atoll or uplifted coral atoll is an atoll that has been lifted high enough above sea level by tectonic forces, protecting it from scouring by storms and enabling soils and diverse – often endemic – species of flora and fauna to develop. With the exception of Aldabra in the Indian Ocean and Henderson Island in the Pacific Ocean, most tropical raised atolls have been dramatically altered by human activities such as species introduction, phosphate mining, and even bomb testing.

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👉 Raised coral atoll in the context of Rennell Island

Rennell Island, locally known as Mugaba, is the main island of two inhabited islands that make up the Rennell and Bellona Province in the nation state of Solomon Islands. Rennell Island has a land area of 660 square kilometres (250 mi) and is about 80 kilometres (50 mi) long and 14 kilometres (8.7 mi) wide. It is the second largest raised coral atoll in the world with the largest lake in the insular Pacific, Lake Tegano, a lake that is listed as a World Heritage Site. Rennell Island has a population of about 1,840 persons of Polynesian descent who primarily speak Rennellese, Pijin and some English. Rennell and Bellona Islands are two of the few islands in the otherwise Melanesian Solomon Islands archipelago classified as a Polynesian outlier.

The island lies 236 kilometres (127 nmi; 147 mi) south of Honiara and 1,900 kilometres (1,000 nmi; 1,200 mi) north-east of Brisbane. The provincial capital, Tigoa, is at the western end of the island.

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Raised coral atoll in the context of Kiribati

Kiribati, officially the Republic of Kiribati, is an island country in the Micronesia sub-region of Oceania in the central Pacific Ocean. The state comprises 32 atolls and other islands and one remote raised coral island, Banaba. Its total land area is 811 km (313 sq mi) dispersed over 3,441,810 km (1,328,890 sq mi) of ocean. The spread of the country's islands, from Banaba in the west to Kiritimati in the east straddles the equator and the 180th meridian. The International Date Line goes around Kiribati and swings far to the east, almost reaching 150°W. This brings Kiribati's easternmost islands, the southern Line Islands south of Hawaii, into the same day as the Gilbert Islands and places them in the most advanced time zone on Earth: UTC+14.

The permanent population of Kiribati is over 119,000 as of the 2020 census, and more than half live on Tarawa. There is also a significant number of I-Kiribati forming a diaspora, the largest of which still growing via emigration is probably in New Zealand; historically, diasporic communities were created through over-population resettlement in the Solomon Islands on Ghizo and Wagina, and through intermarriage in the United Kingdom and United States. Another country with growing diasporic communities born of recent labour immigration is Australia.

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Raised coral atoll in the context of Banaba

Banaba (/bəˈnɑːbə/; formerly Ocean Island) is an island of Kiribati in the Pacific Ocean. A solitary raised coral island west of the Gilbert Island Chain, it is the westernmost point of Kiribati, lying 185 miles (298 km) east of Nauru, which is also its nearest neighbour. It has an area of six square kilometres (2.3 sq mi), and the highest point on the island is also the highest point in Kiribati, at 81 metres (266 ft) in height. Along with Nauru and Makatea (French Polynesia), it is one of the important elevated phosphate-rich islands of the Pacific.

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Raised coral atoll in the context of List of islands of Kiribati

This is a list of all of the islands of Kiribati. The Republic of Kiribati consists of 32 atolls and one raised coral island. These islands are dispersed throughout the three island groups that form Kiribati:

All the Phoenix Islands are uninhabited except for one island, the sparsely populated Canton Island. The remaining Phoenix Islands make up the Phoenix Islands Marine Protected Area, which is the third largest marine protected area in the world.

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Raised coral atoll in the context of Solomon Islands (archipelago)

8°00′S 159°00′E / 8.000°S 159.000°E / -8.000; 159.000

The Solomon Islands is an island group (archipelago) in the western South Pacific Ocean, north-east of Australia. The archipelago is in the Melanesian subregion and bioregion of Oceania and forms the eastern boundary of the Solomon Sea. The many islands of the archipelago are distributed across the sovereign states of Papua New Guinea and Solomon Islands. The largest island in the archipelago is Bougainville Island, which is a part of the Autonomous Region of Bougainville (currently a part of Papua New Guinea) along with Buka Island, the Nukumanu Islands, and a number of smaller nearby islands. Much of the remainder falls within the territory of Solomon Islands and include the atolls of Ontong Java, Sikaiana, the raised coral atolls of Bellona and Rennell, and the volcanic islands of Choiseul, Guadalcanal, Makira, Malaita, New Georgia, the Nggelas, Santa Isabel, and the Shortlands. The Santa Cruz Islands are not a part of the archipelago.

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Raised coral atoll in the context of Makatea

Makatea, or Mangaia-te-vai-tamae, is a raised coral atoll in the northwestern part of the Tuamotus, which is a part of the French overseas collectivity of French Polynesia. It is located 79 kilometres (49 mi) southwest from Rangiroa to the west of the Palliser group, which also is in French Polynesia. Makatea is surrounded by spectacular cliffs, rising to a plateau 80 metres (260 ft) above sea level. This island is 7.5 kilometres (4.7 mi) long, with a maximum width of 7 kilometres (4.3 mi) in the south. It is 24 square kilometres (9.3 sq mi) in area. Makatea is one of only four islands of the Tuamotu Archipelago (along with filled atolls Nukutavake, Tikei, and Tepoto Nord) that do not take the form of a typical atoll.

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Raised coral atoll in the context of Henderson Island (Pitcairn Islands)

Henderson Island is an uninhabited island in the south Pacific Ocean. It is part of the Pitcairn Island Group, together with Pitcairn, Oeno, and Ducie Islands. Measuring 9.6 by 5.1 kilometres (6.0 mi × 3.2 mi), it has an area of 37.3 km (14.4 sq mi) and is located 193 km (104 nmi; 120 mi) northeast of Pitcairn Island, which is the only inhabited island of the group. It has poor soil and little fresh water, and is unsuitable for agriculture. There are three beaches on the northern end and the remaining coast comprises steep (mostly undercut) cliffs up to 15 m (50 ft) in height. In 1902, it was annexed to the Pitcairn Islands colony, which is now a British Overseas Territory.

Henderson is one of the last two raised coral atolls in the world whose ecosystems remain relatively unaffected by human contact, along with Aldabra in the Indian Ocean. In 1988, it was designated a World Heritage Site by the United Nations. Ten of its 51 flowering plants, all four of its land birds and about a third of the identified insects and gastropods are endemic – a remarkable diversity given the island's size.

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