HYDROGEN IN THE DEEP EARTH
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dc.contributor.author | Williams Q. | |
dc.contributor.author | Hemley R.J. | |
dc.date.accessioned | 2021-03-03T07:11:22Z | |
dc.date.available | 2021-03-03T07:11:22Z | |
dc.date.issued | 2001 | |
dc.identifier | https://elibrary.ru/item.asp?id=13736761 | |
dc.identifier.citation | Annual Review of Earth and Planetary Sciences, 2001, 29, С. 3, 365-418 | |
dc.identifier.issn | 0084-6597 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/26221 | |
dc.description.abstract | The mechanisms of exchange of hydrogen between the deep interior and surface of Earth, as well as the means of retention and possible abundance of hydro-gen deep within the Earth, are examined. The uppermost several hundred kilometers of Earth's suboceanic upper mantle appear to be largely degassed, but significant pri-mordial hydrogen could be retained within the transition zone, lower mantle, or core. Regassing of the planet occurs via subduction: Cold slabs are likely particularly effi-cient at transporting hydrogen to depth within the planet. Marked changes in hydrogen cycling have taken place throughout Earth's history: Evidence of hydrated ultramafic melts in the Archean and probable hydrogen retention within a Hadean magma ocean indicate that early in its history, the deep Earth was substantially wetter. The largest enigma associated with hydrogen in the deep Earth lies in the core: This region could represent the dominant reservoir of hydrogen on the planet, with up to ∼100 hydro-spheres of hydrogen present as a high-pressure iron-alloy. | |
dc.subject | mantle | |
dc.subject | core | |
dc.subject | volatiles | |
dc.subject | water | |
dc.subject | hydrous phases | |
dc.title | HYDROGEN IN THE DEEP EARTH | |
dc.type | Статья |
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