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Originally Posted by Turtle
The actual extent, number, activity, etcetera referred to in this piece remain largely univestigated. Any future open seas in the Arctic due to warming may allow researchers access in the future, and there is a new autonomous submarine technology under testing at the North Pole. Besides these unknowns, there is the carbon sinks in the form of biota living at hydrothermal vents. Unknown means not counted.
Under the Arctic Ice, a Seabed Yields Some Fiery Secrets - New York Times |
Instead of quoting a news article on the published paper, I'd advise you look at the paper itself. This article is clearly discussing warming of the mantle, and cannot account for the sharply spiked increases we've observed for the past half century, nor for the exponentially climbing rate of increase in atmospheric CO
2 concentrations.
Magmatic and amagmatic seafloor generation at the ultraslow-spreading Gakkel ridge, Arctic Ocean : Article : Nature
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Magmatic and amagmatic seafloor generation at the ultraslow-spreading Gakkel ridge, Arctic Ocean
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A high-resolution mapping and sampling study of the Gakkel ridge was accomplished during an international ice-breaker expedition to the high Arctic and North Pole in summer 2001.
For this slowest-spreading endmember of the global mid-ocean-ridge system, predictions were that magmatism should progressively diminish as the spreading rate decreases along the ridge, and that hydrothermal activity should be rare. Instead, it was found that magmatic variations are irregular, and that hydrothermal activity is abundant.
A 300-kilometre-long central amagmatic zone, where mantle peridotites are emplaced directly in the ridge axis, lies between abundant, continuous volcanism in the west, and large, widely spaced volcanic centres in the east. These observations demonstrate that the extent of mantle melting is not a simple function of spreading rate: mantle temperatures at depth or mantle chemistry (or both) must vary significantly along-axis.
Highly punctuated volcanism in the absence of ridge offsets suggests that first-order ridge segmentation is controlled by mantle processes of melting and melt segregation. The strong focusing of magmatic activity coupled with faulting may account for the unexpectedly high levels of hydrothermal activity observed.
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The worst part is that you cannot see the rebuttals to your claims since you have me on ignore. Since you cannot see the rebuttals, you will surely continue spewing nonsense as if it proves anything I've shared to be fallacious.
This is becoming a bit like arguing natural selection with a creationist. It really doesn't matter how much evidence and support I share for my position, you continue with the non-sequiturs.
