How old is the currently active shield volcano located in the Kaʻ ū Desert?
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Kaʻū Desert The Kaʻ ū Desert is a leeward desert in the district of Kaʻ ū, the southernmost district on the Big Island of Hawaii, and is made up mostly of dried lava remnants, volcanic ash, sand and gravel. The desert covers an area of the Kīlauea Volcano along the Southwest rift zone. The area lacks any vegetation, mainly due to acid rainfall.
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Kīlauea Kīlauea ( , ; ] ) is a currently active shield volcano in the Hawaiian Islands, and the most active of the five volcanoes that together form the island of Hawaiʻ i. Located along the southern shore of the island, the volcano is between 300,000 and 600,000 years old and emerged above sea level about 100,000 years ago. It is the second youngest product of the Hawaiian hotspot and the current eruptive center of the Hawaiian–Emperor seamount chain. Because it lacks topographic prominence and its activities historically coincided with those of Mauna Loa, Kīlauea was once thought to be a satellite of its much larger neighbor. Structurally, Kīlauea has a large, fairly recently formed caldera at its summit and two active rift zones, one extending 125 km east and the other 35 km west, as an active fault of unknown depth moving vertically an average of 2 to per year.
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Kīpuka A kīpuka is an area of land surrounded by one or more younger lava flows. A kīpuka forms when lava flows on either side of a hill, ridge, or older lava dome as it moves downslope or spreads from its source. Older and more weathered than their surroundings, kīpukas often appear to be like islands within a sea of lava flows. They are often covered with soil and late ecological successional vegetation that provide visual contrast as well as habitat for animals in an otherwise inhospitable environment.
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Kavachi Kavachi is one of the most active submarine volcanoes in the south-west Pacific Ocean. Located south of Vangunu Island in the Solomon Islands, it is named after a sea god of the New Georgia Group islanders, and is also referred to locally as Rejo te Kavachi ("Kavachi's oven’). The volcano has become emergent and then been eroded back into the sea at least eight times since its first recorded eruption in 1939.
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Hawaiian–Emperor seamount chain The Hawaiian–Emperor seamount chain is a mostly undersea mountain range in the Pacific Ocean that reaches above sea level in Hawaii. It is composed of the Hawaiian ridge, consisting of the islands of the Hawaiian chain northwest to Kure Atoll, and the Emperor Seamounts: together they form a vast underwater mountain region of islands and intervening seamounts, atolls, shallows, banks and reefs along a line trending southeast to northwest beneath the northern Pacific Ocean. The seamount chain, containing over 80 identified undersea volcanoes, stretches over 5800 km from the Aleutian Trench in the far northwest Pacific to the Loʻihi seamount, the youngest volcano in the chain, which lies about 35 km southeast of the Island of Hawaiʻi.
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Tantalus (Oahu) Mount Tantalus (Puu-ohia), is an extinct cinder cone in the southern Koʻ olau Range on the Hawaiian Island of Oʻ ahu. It also has a summit crater, Tantalus Crater. The cinder cone formed after the demise of Koʻ olau Volcano, during a time of rejuvenated stage volcanism in southeastern Oʻ ahu that also formed Punchbowl Crater, Diamond Head and Koko Head. Tantalus overlooks the modern city of Honolulu, which is built on top of Tantalus cinders.
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Sierra Negra (Galápagos) Sierra Negra (Spanish: "Black Mountain") is a large shield volcano at the South eastern end of Isabela Island in the Galapagos that rises to an altitude of 1124m. It coalesces with the volcanoes Cerro Azul to the west and Alcedo to the north. It is one of the most active of the Galapagos volcanoes with the most recent historic eruption in October 2005.
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Miño Volcano Miño Volcano is a symmetrical cone-shaped stratovolcano located in El Loa Province, Antofagasta Region, Chile. It lies a few kilometres northwest of Aucanquilcha volcano and at its foot originates Loa River. The major settlement in its vicinity is Ollagüe. The volcano has erupted mafic andesite. Potassium-argon dating has yielded ages of 3.59±0.11 and 3.27±0.40 million years ago for Miño. This volcano is usually considered part of Aucanquilcha, and lava flows appear to originate from the summit.
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Upolu Point Upolu Point is the most northern point on the island of Hawaiʻ i in the Hawaiian Islands. It is an extruding landform created by cooled lava from an old eruption from Kohala volcano. The main town on the extrusion is Hawi, Hawaii about 2 miles (3 km) inland. The main road is Akoni Pule Highway t(Hawaii state route 270) which starts at the Hawaii Belt Road in Kawaihae, along the west coast of the point, and then through the towns of Hawi and Kapaʻ au, ending at Pololū Valley. Upolu Point also overlooks Mahukona Harbor.
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Goat Rocks Goat Rocks is an extinct stratovolcano in the Cascade Range, located between Mount Rainier and Mount Adams in southern Washington, in the United States. Part of the Cascade Volcanoes, it was formed by the subduction of the Juan de Fuca Plate under the western edge of the North American Plate. The volcano was active from 3.2 million years ago until eruptions ceased between 1 and 0.5 million years ago. Throughout its complex eruptive history, volcanism shifted from silicic explosive eruptions to voluminous, mafic activity.
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Lunar dome A lunar dome is a type of shield volcano that is found on the surface of the Earth's Moon. They are typically formed by highly viscous, possibly silica-rich lava, erupting from localized vents followed by relatively slow cooling. Lunar domes are wide, rounded, circular features with a gentle slope rising in elevation a few hundred meters to the midpoint. They are typically 8–12 km in diameter, but can be up to 20 km across. Some of the domes contain a small craterlet at the peak.
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Bazman Bazman (Persian: بزمان‎ ‎ , also known as Kuh-e Bazman) is a stratovolcano in a remote desert region of Sistan and Baluchestan Province in south-eastern Iran. A 500-m-wide crater caps the summit of the dominantly andesitic-dacitic volcano, the flanks of which are covered by monogenetic centres especially to the northwest. Bazman is a geologically young volcano which was made in the Quaternary, with the oldest dated rocks being 11.7 million years old and the youngest 0.6 million years. Although no historic eruptions have been reported from Bazman, it does contain fumaroles. Thus Bazman may be regarded as dormant, rather than extinct. Its satellite cones have been the source of basaltic lava flows.
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Mount Kalatungan Mount Kalatungan, also known as Catatungan, is a volcanic mountain located in the province of Bukidnon in the southern Philippines. It is a stratovolcano with no known historical eruptions and classified by the Philippine Institute of Volcanology and Seismology (PHIVOLCS) as a potentially active volcano.
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San Quintín Volcanic Field The San Quintín Volcanic Field is a collection of ten or eleven volcanic cinder cones situated along the Pacific coast of the Baja California peninsula in Mexico. The field formed by repeated eruptions beginning in the Pleistocene and ending about 3000 years ago. It is one of several known Quaternary period volcanic fields in Baja. The lava shields appear to have first grown as subaqueous volcanoes that emerged as islands.
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Aleutian Arc The Aleutian Arc is a large volcanic arc in the U.S. state of Alaska. It consists of a number of active and dormant volcanoes that have formed as a result of subduction along the Aleutian Trench. Although taking its name from the Aleutian Islands, this term is a geologic grouping rather than a geographic one, and the Aleutian Arc extends through the Alaska Peninsula following the Aleutian Range to the Aleutian Islands.
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Hawaii hotspot The Hawaii hotspot is a volcanic hotspot located near the namesake Hawaiian Islands, in the northern Pacific Ocean. One of the most well-known and heavily studied hotspots in the world, the Hawaii plume is responsible for the creation of the Hawaiian – Emperor seamount chain, a chain of volcanoes over 5,800 kilometres (3,600 mi) long. Four of these volcanoes are active, two are dormant, and more than 123 are extinct, many having since been ground beneath the waves by erosion as seamounts and atolls. The chain extends from south of the island of Hawaiʻ i to the edge of the Aleutian Trench, near the eastern edge of Russia. While most volcanoes are created by geological activity at tectonic plate boundaries, the Hawaii hotspot is located far from plate boundaries. The classic hotspot theory, first proposed in 1963 by John Tuzo Wilson, proposes that a single, fixed mantle plume builds volcanoes that then, cut off from their source by the movement of the Pacific Plate, become increasingly inactive and eventually erode below sea level over millions of years. According to this theory, the nearly 60° bend where the Emperor and Hawaiian segments of the chain meet was caused by a sudden shift in the movement of the Pacific Plate. In 2003, fresh investigations of this irregularity led to the proposal of a mobile hotspot theory, suggesting that hotspots are mobile, not fixed, and that the 47-million-year-old bend was caused by a shift in the hotspot's motion rather than the plate's.
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Albuquerque volcanic field Albuquerque volcanic field is a monogenetic volcanic field in the Albuquerque Basin in New Mexico, United States. The Albuquerque volcanic field is made of monogenetic volcanoes that produced lava flows, cinder cones, and spatter cones. It is located about 11 km west-northwest of the city of Albuquerque, and is contained within the borders of Petroglyph National Monument. The oldest lava flows cover about 60 square km. The cones are aligned and possibly formed above two roughly north-south trending fissures. J cone (also called Vulcan) is the highest feature. Its base is made of cinder, but the crater contains a lava dome that was cut by an explosive eruption. The Albuquerque volcanic field was active from 170,000 to 70,000 years ago.
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2009 Tonga undersea volcanic eruption The 2009 Tonga undersea volcanic eruption began on March 16, 2009, near the island of Hunga Tonga, approximately 11 km from the Tongan capital of Tongatapu. The volcano is in a highly active volcanic region that represents a portion of the Pacific Ring of Fire. It is estimated that there are up to 36 undersea volcanoes clustered together in the area.
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Sawtooth Mountain Sawtooth Mountain is a shield volcano, and part of the polygenetic Indian Heaven Volcanic Field in Washington, United States. It is located midway between Mount St. Helens and Mount Adams, and dates from the Pleistocene and Holocene. Sawtooth Mountain is the third highest point at 5354 ft . The mountain forms a series of welded volcanic rock spires, an eroded remnant of an ancient shield volcano. Sawtooth Mountain is the third highest point in the Indian Heaven Wilderness Area. While Sawtooth Mountain is not the highest, its craggy appearance makes it one of the most namesake peaks in the Indian Heaven Volcanic Field.
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List of shield volcanoes This list of shield volcanoes includes active, dormant and extinct shield volcanoes.
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Canary hotspot The Canary hotspot, also called the Canarian hotspot, is a volcanic hotspot believed to be located at the Canary Islands off the north-western coast of Africa, although alternative theories have also been suggested to explain the volcanism there. The Canary hotspot is believed to be underlain by a mantle plume that is relatively deep. It is believed to have first appeared about 60 million years ago.
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Australian Shield The Australian Shield, also called the Western Australian Shield or Western Plateau, occupies more than half of the continent of Australia. The word shield is used because it refers to ancient, molten rock which has cooled and solidified. The Australian Shield has a characteristic depth of 4.5 km and an estimated age of 2.8 to 3.5 billion years. In places younger sedimentary rock covers the shield's Precambrian surface.