Mauna Loa
Posted: Tue Nov 29, 2022 5:59 am
For the first time in 38 years, Hawaiian giant Mauna Loa is erupting. Thus far, not a threat to life or property.
(USGS photo by K. Lynn)
(USGS photo by K. Lynn)
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jagfiles wrote:They say the entire Hawaiin Islands are volcanically built
jagfiles wrote:I heard about that on the news earlier.
They say the entire Hawaiin Islands are volcanically built
Mynock wrote:^^The entire chain of islands was/is created by a geological "hot spot" where a magma plume from deep within the mantle comes up and burns a hole through the tectonic plate floating above it. The ensuing volcanic activity builds up one island after another as the plate moves over it.
About Lōʻihi Hawaii
All of the Hawaiian Islands were formed by volcanoes that began from the ocean floor, with eruptions over millions of years growing each island up to and above the surface of the ocean. Eighteen miles southeast of the Big Island of Hawaii, there is a new island called Loihi forming, with lava erupting from its peak underwater and building it closer to the ocean surface. The top of Loihi is still 3000 feet underwater. It is estimated that it will take another 50,000 years for it to rise up and form dry land for a new Hawaiian island.