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Like all Hawaiian volcanoes, Mauna Loa was created as the Pacific tectonic plate moved over the Hawaii hotspot in the Earth's underlying mantle. [10] The Hawaii island volcanoes are the most recent evidence of this process that, over 70 million years, has created the 3,700 mi (6,000 km)-long Hawaiian–Emperor seamount chain. [11]
The 1868 Hawaiʻi earthquake was the largest recorded in the history of Hawaiʻi island, [3] with an estimated magnitude of 7.9 Mfa[1] and a maximum Mercalli intensity of X (Extreme). The earthquake occurred at 4 p.m. local time on April 2, 1868, and caused a landslide and tsunami that led to 77 deaths. The aftershock sequence for this event ...
Geology. Age of rock. Pleistocene epoch. Mountain type. Shield volcano. Volcanic arc / belt. Hawaiian-Emperor seamount chain. West Molokai Volcano, sometimes called Mauna Loa for the census-designated place, is an extinct shield volcano comprising the western half of Molokai island in the U.S. state of Hawaii.
The 1984 eruption of Mauna Loa was a Hawaiian eruption in the U.S. state of Hawaii that lasted from March 25 to April 15, 1984. It ended a 9-year period of quiescence at the volcano and continued for 22 days, during which time lava flows and lava fountains issued from the summit caldera and fissures along the northeast and southwest rift zones.
This is a list of volcanic eruptions from Mauna Loa, an active shield volcano in the Hawaiian Islands that last erupted in 2022. These eruptions have taken place from the main caldera and fissures along rift zones. They are generally fluid (VEI -0) Hawaiian eruptions but more violent eruptions have occurred throughout Mauna Loa's eruptive ...
October 14, 2024 at 12:03 PM. Access to the Mauna Loa Observatory could be restored by April, more than two years after the eruption of its namesake volcano cut it off from the rest of the island ...
Kohala (mountain) Kohala is the oldest of five volcanoes that make up the island of Hawaii. Kohala is an estimated one million years old—so old that it experienced, and recorded, the reversal of Earth's magnetic field 780,000 years ago. It is believed to have breached sea level more than 500,000 years ago [1] and to have last erupted 120,000 ...
The Mauna Loa summit, cabins and high-elevation areas have been closed since early October when the summit first began "experiencing heightened unrest." Mauna Loa Observatory, located just outside ...