It emerged from the ocean about 300,000 years ago and is one of the five volcanoes that make up the island. For additional information on Hualalai Volcano. Hualalai, the third of Hawaii's active shield volcanoes, is located northwest and west of its giant neighbors Mauna Loa and Mauna Kea. Hualalai volcano last erupted between 1800-1801, when it produced lava flows from 5 fissure vents that reached the sea and buried Hawaiian villages.
The Hualalai began to erupt about 800,000 years ago and broke the surface of the sea about 300,000 years ago. The volcano has 3 rift zones, the most prominent being the northwest rift, which is about 40 km long and continues in the sea to a depth of 3000 m. Hualalai is one of five active shield volcanoes in the Hawaiian Islands that form the big island of Hawaii. This large shield volcano is located in the northwestern part of the Big Island of Hawaii, in the US state of Hawaii.
Hualalai is Hawaii's fourth highest mountain peak, rising to a height of 2,521 m and has a prominence of 936 m. It is also the third most active volcano after Kilauea and Mauna Loa on the island of Hawaii. No magma-related seismicity or soil deformation has been detected recently in Hualalai, making it difficult to say if and when the next eruption could occur. The shield volcano, Kilauea, produces a type of basalt called tholeiite, which is the main type of lava that forms the shield during volcanic activity in Hawaii.
Hundreds of years ago, the “Ahu A Umi Heiau” shrine was built on a dry plateau east of Hualalai. Therefore, Hualalai volcano is relatively rougher in shape and structure compared to the active Mauna Loa and Kilauea volcanoes. Hualalai's most important secondary feature is Pu'u Wa'awa'a, a 372 m high volcanic cone located north of the summit with a diameter of more than 1.6 km. However, there is no summit caldera in Hualalai, but there is a collapsed crater located about 0.48 km through a small lava shield.
Three Hawaiian island volcanoes have proven to be the most recent evidence that the process caused the formation of a chain of six volcanoes around the Hawaiian-Emperor seamount system more than 70 million years ago. The Hawaiian hot spot in the Earth's underlying mantle, like all ancient Hawaiian volcanoes, eroded due to the erosion of a Pacific tectonic plate moving over it. One of Hualalai's most notable features are the less-burning alkaline eruptions of Kohala and Mauna Kea, which also affect nearby volcanoes. Hualalai volcanic eruptions began after a shield volcano covered the entire surface about 100,000 years ago.
It is also known that the lavas of Hualalai volcano are the source of xenoliths, which are fragments of rock from the Earth's mantle, carried up on the surface by lava flows. Studies have revealed that the volcanic cone is made up of trachyte, which is only found in the Hualalai volcano and not in any other volcano that forms the island of Hawaii. Several elements escape to a volcano by liquefying molten rock and stone forms when hot molten rock, ash and gases escape from a that opens on the Earth's surface.
