High-Pressure Na-Ca Carbonates in the Deep Carbon Cycle

Sergey Rashchenko, Anton Shatskiy, Konstantin Litasov

Результат исследования: Публикации в книгах, отчётах, сборниках, трудах конференцийглава/разделнаучнаярецензирование

Аннотация

Carbonates play a central role in the subduction transport of oxidized carbon from Earth's surface to the deep mantle. The melting of carbonated rocks also leads to the release of carbonate melts, regarded as important oxidizing and metasomatizing agents, from the subducting slab. Although at upper mantle conditions the chemistry of carbonates within the subducting slab is restricted to the thoroughly studied ternary CaCO3-MgCO3-FeCO3 system, recent experimental and natural evidences strongly suggest that at conditions of the mantle transition zone, Na-Ca carbonates become the main host of oxidized carbon and define solidus -temperatures and chemistry of deep melts. In this chapter, we discuss transport of carbonates to the mantle transition zone within the subducting slab, evidences of sodium migration from silicates into carbonates under high pressure, and crystal chemistry of currently known high-pressure Na-Ca carbonates.

Язык оригиналаанглийский
Название основной публикацииCARBON IN EARTH'S INTERIOR
РедакторыCE Manning, JF Lin, WL Mao
ИздательAMER GEOPHYSICAL UNION
Глава13
Страницы127-136
Число страниц10
ISBN (печатное издание)978-1-119-50826-7
DOI
СостояниеОпубликовано - 24 мар 2020

Серия публикаций

НазваниеGeophysical Monograph Book Series
ИздательAMER GEOPHYSICAL UNION
Том249
ISSN (печатное издание)0065-8448

Предметные области OECD FOS+WOS

  • 1.05.GC ГЕОХИМИЯ И ГЕОФИЗИКА

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