Some islands started in diamond-bearing regions under continents, geochemists say

The raw materials of some volcanic islands are shaped by some of the same processes that form diamonds deep under the continents, according to a new study. The study asserts that material from diamond-forming regions journeys nearly to Earth's core and back up to form such islands, a process that could take two and a half billion years or longer -- more than half of Earth's entire history.

from Oceanography News -- ScienceDaily http://ift.tt/2cffmvo
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