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Re: THE Volcano Thread Pt. 2

Unread postPosted: Sun 15 Apr 2018, 17:12:00
by rockdoc123
The actual mechanisms are still debated somewhat but most believe circulation in the mantle coupled with density spreading of new oceanic crust from the higher ridges towards the subduction zones is the main culprit. The subducted slab is melted and contributes to volcanoes through uprising magma, the majority being assimilated into the mantle and redistributed at the ocean ridges.

Re: THE Volcano Thread Pt. 2

Unread postPosted: Mon 16 Apr 2018, 10:28:05
by ROCKMAN
Donlan - All good questions. But I doubt those dynamics can be measured in the span of a human lifetime. And worse: I doubt anyone is making much effort to measure "the big picture".