is it posiple
2007-02-08 02:26:36 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
It depends. If they have reached isostatic equilibrium or not. Islands like Japan, Cuba, or Puerto Rico (formed by subduction zone magmatism) are not going to sink (only after deep erosion after tens or hundreds million years). But islands like Hawaii (formed by hot spot magmatism) they will sink whenever the magma that is feeding the volcano moves away to create a new island. You can see in a map of the ocean floor tens of former islands submerged along the Hawaiian trend. This process is not immediate and can take a hundred thousands to a few millions of years.
Now if sea level rises (by melting of the ice or by an increase in the tectonic activity in mid ocean ridges) then several islands will sink (because they are now under water).
2007-02-08 05:24:31 · answer #1 · answered by Scientist13905 3 · 1⤊ 0⤋
Yes, the above poster is correct. Also, you were probably thinking of an island sinking like how a boat sinks. That can't happen because islands don't float. They're attached to tectonic plates.
2007-02-08 10:41:50 · answer #2 · answered by charlie h 3 · 1⤊ 0⤋
The Emperor Sea Mounts are a group of submerged islands originating from the plume under Hawaii. Look up guyot and go to:
http://en.wikipedia.org/wiki/Emperor_Seamounts
2007-02-08 20:31:30 · answer #3 · answered by Frodo B 2 · 0⤊ 0⤋
Islands, whether on lakes, rivers or seas, can submerge if the surrounding water levels rise. This can be due to floods or "global warming" for example.
2007-02-08 13:25:51 · answer #4 · answered by lare 7 · 0⤊ 0⤋
yes. seismic unstability van make an island sink below the sea.
parts of greece have. in ancient times due to earthquakes.
2007-02-08 10:30:39 · answer #5 · answered by mrzwink 7 · 1⤊ 0⤋
it is possible with the increasingly temperatures due to global warming.
2007-02-10 10:13:50 · answer #6 · answered by knowledge.DOTS 1 · 0⤊ 0⤋