The Tamu Massif, located beneath the Pacific Ocean on the Shatsky Rise, has been confirmed as the largest single volcano on Earth. This discovery, led by Dr. William Sager from the University of Houston, reveals a vast, flat structure previously misidentified as three separate geological formations due to their appearance on maps.
The massif covers approximately 120,000 square miles, comparable to New Mexico, and exhibits a unique, gradual slope rather than the rugged features typically associated with volcanoes. Its peak sits about 6,500 feet below sea level.
Seismic data showed a continuous lava flow connecting the entire structure, challenging earlier interpretations of oceanic plateaus and contributing to our understanding of large-scale eruptions. The Tamu Massif’s size is so remarkable that it can be compared to Olympus Mons on Mars, standing apart from Earth’s active volcanoes, like Mauna Loa, which is significantly smaller.
This research enhances knowledge of Earth’s geological processes, particularly regarding magma movements from the mantle, and signifies an important advancement in geological studies, as detailed in a publication in Nature Geoscience.
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