Central Island

Last updated
Central Island
UNESCO World Heritage Site
Kenya Aerial 2009-08-27 14-27-32.JPG
Location Kenya
Part of Lake Turkana National Parks
Criteria Natural: (viii)(x)
Reference 801bis-002
Inscription1997 (21st Session)
Extensions2001
Area500 ha (1,200 acres)
Coordinates 3°29′30″N36°4′0″E / 3.49167°N 36.06667°E / 3.49167; 36.06667
Central Island
Kenya relief location map.jpg
Red pog.svg
Location of Central Island in Kenya

Central Island, also known as Crocodile Island, is a volcanic island located in the middle of Lake Turkana in Kenya. It is also the location of Central Island National Park, which is governed by the Kenya Wildlife Service. [1]

Contents

Overview

Central Island is composed of more than a dozen craters and cones, three of which are filled by small lakes. The two largest lakes partially fill craters up to a kilometre wide and about 80 m deep, the floors of which are near sea level. The highest point on the dominantly basaltic island reaches 550 m, about 190 m above the lake surface. An E-W-trending chain of small explosion craters cuts the eastern side of the 3-km-wide island. Several small islands to the SE represent partially submerged crater rims, and other cones and lava plugs lie beneath the lake surface near the island.

The youngest Central Islands tuffs and lavas may be as young as Holocene (Karson and Curtis, 1992). Fumarolic activity is concentrated along the NE-to-SE rim of the central crater, and sprays of sulfur from the fumaroles were observed by visitors in the 1930s. In 1974 intense emission of molten sulfur and steam clouds were seen from the mainland. [2]

Related Research Articles

<span class="mw-page-title-main">Crater Lake National Park</span> National park in Oregon

Crater Lake National Park is a national park of the United States located in southern Oregon. Established in 1902, Crater Lake is the fifth-oldest national park in the United States and the only national park in Oregon. The park encompasses the caldera of Crater Lake, a remnant of Mount Mazama, a destroyed volcano, and the surrounding hills and forests.

<span class="mw-page-title-main">Lava Beds National Monument</span> National monument in California, United States

Lava Beds National Monument is located in northeastern California, in Siskiyou and Modoc counties. The monument lies on the northeastern flank of Medicine Lake Volcano, which is the largest volcano by area in the Cascade Range.

<span class="mw-page-title-main">Volcanic cone</span> Landform of ejecta from a volcanic vent piled up in a conical shape

Volcanic cones are among the simplest volcanic landforms. They are built by ejecta from a volcanic vent, piling up around the vent in the shape of a cone with a central crater. Volcanic cones are of different types, depending upon the nature and size of the fragments ejected during the eruption. Types of volcanic cones include stratocones, spatter cones, tuff cones, and cinder cones.

<span class="mw-page-title-main">Craters of the Moon National Monument and Preserve</span> National monument in Idaho, United States

Craters of the Moon National Monument and Preserve is a U.S. national monument and national preserve in the Snake River Plain in central Idaho. It is along US 20, between the small towns of Arco and Carey, at an average elevation of 5,900 feet (1,800 m) above sea level.

<span class="mw-page-title-main">Mono–Inyo Craters</span> Volcanic chain in eastern California, United States

The Mono–Inyo Craters are a volcanic chain of craters, domes and lava flows in Mono County, Eastern California. The chain stretches 25 miles (40 km) from the northwest shore of Mono Lake to the south of Mammoth Mountain. The Mono Lake Volcanic Field forms the northernmost part of the chain and consists of two volcanic islands in the lake and one cinder cone volcano on its northwest shore. Most of the Mono Craters, which make up the bulk of the northern part of the Mono–Inyo chain, are phreatic volcanoes that have since been either plugged or over-topped by rhyolite domes and lava flows. The Inyo volcanic chain form much of the southern part of the chain and consist of phreatic explosion pits, and rhyolitic lava flows and domes. The southernmost part of the chain consists of fumaroles and explosion pits on Mammoth Mountain and a set of cinder cones south of the mountain; the latter are called the Red Cones.

<span class="mw-page-title-main">Lassen Volcanic National Park</span> National park in California, United States

Lassen Volcanic National Park is a national park of the United States in northeastern California. The dominant feature of the park is Lassen Peak, the largest plug dome volcano in the world and the southernmost volcano in the Cascade Range. Lassen Volcanic National Park is one of the few areas in the world where all four types of volcanoes can be found: plug dome, shield, cinder cone, and stratovolcano.

<span class="mw-page-title-main">Kīlauea</span> Active volcano in Hawaii

Kīlauea is an active shield volcano in the Hawaiian Islands. It is located along the southeastern shore of Hawaii Island. The volcano is between 210,000 and 280,000 years old and grew above sea level about 100,000 years ago. Since the islands were settled, it has been the most active of the five volcanoes that together form the island and among the most active volcanoes on Earth. The most recent eruption occurred in September 2024.

<span class="mw-page-title-main">Mount Mazama</span> Complex volcano in the Cascade Range

Mount Mazama is a complex volcano in the western U.S. state of Oregon, in a segment of the Cascade Volcanic Arc and Cascade Range. The volcano is in Klamath County, in the southern Cascades, 60 miles (97 km) north of the Oregon–California border. Its collapse, due to the eruption of magma emptying the underlying magma chamber, formed a caldera that holds Crater Lake. Mount Mazama originally had an elevation of 12,000 feet (3,700 m), but following its climactic eruption this was reduced to 8,157 feet (2,486 m). Crater Lake is 1,943 feet (592 m) deep, the deepest freshwater body in the U.S. and the second deepest in North America after Great Slave Lake in Canada.

<span class="mw-page-title-main">Mount Katmai</span> Stratovolcano in Katmai National Park, Alaska, USA

Mount Katmai is a large active stratovolcano on the Alaska Peninsula in southern Alaska, located within Katmai National Park and Preserve. It is about 6.3 miles (10 km) in diameter with a central lake-filled caldera about two by three miles in size, formed during the Novarupta eruption of 1912. The caldera rim reaches a maximum elevation of 6,716 feet (2,047 m). In 1975 the surface of the crater lake was at an elevation of about 4,220 feet (1,286 m), and the estimated elevation of the caldera floor is about 3,400 ft (1,040 m). The mountain is located in Kodiak Island Borough, very close to its border with Lake and Peninsula Borough. The volcano has caused ten known fatalities due to gas exposure.

<span class="mw-page-title-main">Belknap Crater</span> Shield volcano in the U.S. state of Oregon

Belknap Crater is a shield volcano in the Cascade Range in the U.S. state of Oregon. Located in Linn County, it is associated with lava fields and numerous subfeatures including the Little Belknap and South Belknap volcanic cones. It lies north of McKenzie Pass and forms part of the Mount Washington Wilderness. Belknap is not forested and most of its lava flows are not vegetated, though there is some wildlife in the area around the volcano, as well as a number of tree molds formed by its eruptive activity.

<span class="mw-page-title-main">Ijen</span> Volcano complex in East Java, Indonesia

The Ijen volcano complex is a group of composite volcanoes located on the border between Banyuwangi Regency and Bondowoso Regency of East Java, Indonesia. It is known for its blue fire, acidic crater lake, and labour-intensive sulfur mining.

<span class="mw-page-title-main">Mount Longonot</span> Volcano in Kenya

Mount Longonot is a stratovolcano located southeast of Lake Naivasha in the Great Rift Valley of Kenya, Africa. It is thought to have last erupted in the 1860s. Its name is derived from the Maasai word Oloonong'ot, meaning "mountains of many spurs" or "steep ridges".

<span class="mw-page-title-main">Hell's Gate National Park</span> National park in Kenya

Hell's Gate National Park is a national park situated near Lake Naivasha in Kenya. The park is named after a narrow break in the cliffs, once a tributary of a prehistoric lake that fed early humans in the Rift Valley. It was established in 1984. The park is notable for its wide variety of wildlife and for its scenery. This includes the Fischer's Tower and Central Tower columns and Hell's Gate Gorge. The national park is also home to five geothermal power stations at Olkaria. The park features three basic campsites and includes a Maasai Cultural Center, providing education about Maasai culture and traditions.

<span class="mw-page-title-main">Dotsero</span> Volcano in Colorado, United States

Dotsero Crater is an elongate, 2,300 ft (700 m) long by 1,300 ft (400 m) wide, maar incised into sedimentary strata of the side of a mountain, called Blowout Hill, and local, irregular, mountainous topography. At an elevation of 7,316 ft (2,230 m), its north rim lies about 330 ft (100 m) higher than its south rim. Dotsero Crater is about 1,300 ft (400 m) deep. It is part of a maar and scoria cone complex in which the associated scoria cones are constructed along a NNE-SSW line on either side of the maar and is perched near the upper edge of steep sided canyons about 1,000 ft (300 m) above the valley floor of the Eagle River. The axis of the maar and scoria cone complex aligns with the axis of a local syncline. Associated with the maar and scoria cones is a lahar and 2 mi (3.2 km)-long lava flow. Dotsero Crater lies northeast of Dotsero, Colorado near the junction of the Colorado River and the Eagle River.

<span class="mw-page-title-main">Flourmill Volcanoes</span> Volcanoes in British Columbia, Canada

The Flourmill Volcanoes, also known as The Flourmills, are a small volcano range near the west boundary of Wells Gray Provincial Park in east-central British Columbia, Canada. Located north of Mahood Lake and west of the Clearwater River, they form part of the Wells Gray-Clearwater volcanic field.

<span class="mw-page-title-main">Chain of Craters Road</span> Road in Hawaii

Chain of Craters Road is a 19-mile (31 km) long winding paved road through the East Rift and coastal area of the Hawaii Volcanoes National Park on the island of Hawaii, in the state of Hawaii, United States. The original road, built in 1928, connected Crater Rim Drive to Makaopuhi Crater. The road was lengthened to reach the tiny town of Kalapana in 1959. As of 2018, the road has had parts covered by lava in 41 of the past 53 years, due to eruptions of Kīlauea volcano.

<span class="mw-page-title-main">Halemaʻumaʻu</span> Pit crater located within the summit caldera of Kīlauea in Hawaii

Halemaʻumaʻu is a pit crater within the much larger Kīlauea Caldera at the summit of Kīlauea volcano on island of Hawaiʻi. The roughly circular crater was 770 meters (2,530 ft) x 900 m (2,950 ft) before collapses that roughly doubled the size of the crater after May 3, 2018. Following the collapses of 2018, the bottom of Halemaʻumaʻu was roughly 600 m (2,000 ft) below the caldera floor. Halemaʻumaʻu is home to Pele, goddess of fire and volcanoes, according to the traditions of Hawaiian religion. Halemaʻumaʻu means "house of the ʻāmaʻu fern".

<span class="mw-page-title-main">Aden Crater</span> Volcano in New Mexico, United States

Aden Crater is a small shield volcano located in Doña Ana County, about 25 miles (40 km) southwest of Las Cruces, New Mexico. It is located in the northwest part of the Aden-Afton basalt field, which is part of the central area of the Potrillo volcanic field.

<span class="mw-page-title-main">Crater Hill</span>

Crater Hill is one of the volcanoes of the Auckland volcanic field, in New Zealand. It consists of an explosion crater about 600 metres (2,000 ft) wide, partly filled with water. The hill, alongside Māngere Lagoon, Waitomokia, Kohuora, Pukaki Lagoon and Robertson Hill, is one of the volcanic features collectively referred to as Nga Tapuwae a Mataoho, referring to the deity in Tāmaki Māori myths who was involved in their creation.

<span class="mw-page-title-main">Kauhakō Crater</span>

Kauhakō Crater is a volcanic crater located in Kalawao County, Hawaii, United States. The crater was formed between 230,000 and 300,000 years ago, as the result of the eruption of volcano Pu'u' 'Uao. It is located in the center of the Kalaupapa Peninsula on the island of Molokaʻi, and has a diameter of 500 metres (1,600 ft) by 650 metres (2,130 ft). Lake Kauhakō, located at the bottom of the crater, has the world's greatest depth-to-surface area ratio of a lake and is the tenth deepest lake in the United States. In 2011, the lake underwent an overturning event, causing hydrogen sulfide to float to the surface of the lake and lifeforms, including shrimp and plankton, to disappear.

References

  1. Kenya Wildlife Service – Central Island National Park Archived June 5, 2011, at the Wayback Machine
  2. "Central Island". Global Volcanism Program . Smithsonian Institution . Retrieved 2021-06-24.