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The most recent eruption on haleakalā was probably between a.d Its long history of activity and relatively. The volcano is monitored by a continuous gps instrument and seismometer located near the southwest edge of the summit crater
Key sites on haleakalā are resurveyed using gps receivers every few years to detect any changes in the volcano's shape. Geological evidence suggests that at least 10 eruptions have occurred in the past 1,000 years, with the most recent taking place sometime between 1480 and 1600 Haleakalā started forming 2 million years ago and built a massive shield volcano along 3 rift zones that was once broken by a central caldera
The table below lists all known eruptions (date in bold face) of haleakala volcano since around 2000 bc
Updates on the most recent volcanic activity of haleakala can be found on the news page of haleakala volcano. Haleakalā has erupted at least ten times in the past 1,000 years The last eruption occurred sometime between 1480 and 1600 according to scientific records The history of haleakalā and its recent activity indicate that the volcano will erupt again in the future.
Read about haleakala national park and how to visit. Shield volcano all hawaiian volcanoes are called shield volcanoes because the gradual buildup of many thin layers of lava erupting from the hot spot creates a shape like a warrior's shield —long, broad, and gently curved About 12% of the volcanoes on earth are shield volcanoes The shape of haleakalā means that only the very top — only about 5% — is above sea level.
The summit contains a dramatic 3.5 x 9.5 km summit crater that is widely breached on the n and se sides
The 'crater' is not of volcanic origin, but formed as a result of the coalescence of headward erosion of the koolau and kaupo valleys Subsequently the crater has been partially filled by a. It is a central feature of haleakala national park Haleakala has one of the world's largest dormant volcanic craters, which was formed mainly by erosion and measures about 20 miles (30 km) in circumference
In several places the rim of the crater rises more than 2,500 feet (760 meters) above the crater floor Its last eruption took place in 1790 and radically altered the island's southwestern coast, creating what we've come to identify today as la perouse bay. Though haleakalā is often referred to as a dormant volcano, its past tells a different story
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