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Thank you for your link to geothermal activity in Antarctica SoSick, though it has nothing to do with hydrothermal vents (which don't appear to have anything to do with this thread anyway). Presumably you read on that link page where it says that Mt. Melbourne formed 5 million years ago, and that its youngest volcanic dome is 2 million years old? How about where it says that Antarctica fused with another crustal plate 65 million years ago and that the Antarctic plate hasn't moved much in the last 10 million years?
Whoever wrote that article seems fairly confused, perhaps another case of the short attention spans.
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from Link:
Continental crust is granite rock that has been on the surface to a time close to the creation of the planet. Most of this older rock has been on the surface at least 1,500 million years.
First they say it's been there since the creation of the planet; then they say "at least 1,5000 million years". Clearly they can't be trusted to assign credible dates.

Your assignment of the 2 million year age to the dome makes more sense than their
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from Link:
Mount Discovery, elevation 2,681 meters was formed about five million years ago. It has several volcanic domes on the north side of the mountain, the youngest vents being two million years old.
I expect a hole is a rather tricky thing to date. Sampling the contents of the hole just wouldn't mean much to most folks. I doubt any layers would be visible, although one might be able to calculate the average amount transiting the hole annually.

Given that dating of volcanoes is known to produce erroneous results (forgive my understatement), it's a wonder anyone is so credulous as to accept the figures.
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from Link:
The scientists who did the Rangitoto tests dated 16 volcanoes in all. Eleven of these were able to be compared with carbon-14 dates. In every case the potassium-argon dates were clearly wrong to a huge extent. Similar conflict was found by researchers in Hawaii. A lava flow which is known to have taken place in 1800-1801—less than 200 years ago—was dated by potassium-argon as being 2,960 million years old.3 If the real dates were not fairly well established by other means, who could have proved that the potassium-argon dates were so wrong? So how do you date a volcano? The lesson seems to be that how ever you date it, don’t count on the potassium-argon method.
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Please explain to me why you think that thermal vents are responsible for the seashells on top of Mt. Everest. Instead of, for example, deposition of fossils on a seabed and subsequent uplift.
I don't speak for SoSick, but I'm wondering if you've considered what kinds of phenomena are associated with uplift.

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