It's from the magma conduits that rise up from the mantle. The older volcanics move over the hot spot and become extinct and a new volcanic island forms from the theory of plate tectonics. It be going on for about 67 million years.
Follow the link below and there is a visualization on how hot spots work.
2006-12-08 04:04:31
·
answer #1
·
answered by girliefri 2
·
0⤊
0⤋
The Pacific plate, the part of the Earth's crust on which the Hawaiian islands are situated, has moved over a hot spot, where hot mantle material is convecting upwards. So the volcanoes which make up the Hawaiian islands were pushed up one after the other. Their age decreases as you go along the chain.
2016-05-23 06:40:35
·
answer #2
·
answered by Anonymous
·
0⤊
0⤋
A very hot plume of magma reaches from the core
to the mantle, every now and then it breaks thru
and forms new islands. Since the plates are moving
North eastward very slowly the islands are all in a row over the years..... 1000 years from now there
could be another new island in the "CHAIN"
Here is a VERY good link.
2006-12-08 03:58:23
·
answer #3
·
answered by deltaxray7 4
·
0⤊
0⤋
Well, you know how tourists are always attracted to hot spots, right? Well, they kept showing up until the mass pile of them was high enough to form the islands.
I suppose it could also be because a "hot spot" in geology terms is actually a place where magma flows through the Earth's crust to slowly pile up, but that sounds so much less interesting, doesn't it?
2006-12-08 03:57:06
·
answer #4
·
answered by Cheshire Cat 6
·
0⤊
0⤋
this hot spot is an area of weakness in the pacific plate
therefor hot magma under pressure is forced upwards and when cooled overtime it form a volcanic islands which is called Hawaii
2006-12-08 08:34:14
·
answer #5
·
answered by Dr Knight M.D 5
·
0⤊
0⤋
I know that it was from a volcano but i don,t know how long ago
2006-12-08 03:49:20
·
answer #6
·
answered by Bella 7
·
0⤊
0⤋
deltaxray is correct.
2006-12-08 04:33:09
·
answer #7
·
answered by thisaliascantpossiblybetaken 2
·
0⤊
0⤋