Carbon-bearing magmas in the earth’s deep interior

Konstantin D. Litasov, Anton Shatskiy

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

11 Цитирования (Scopus)

Аннотация

Geodynamic models considering fast mantle upwelling without volatile-bearing components are inapplicable due to high melting temperatures of mantle silicates. Here we discuss the possible nature and composition of melts in the deep upper and lower mantle, which can enhance material transport under superplumes and hot spots originating from the transition zone or from the core-mantle boundary (CMB) of the Earth. An important requirement for diapiric motion is stress-induced melting and dissolution-precipitation of fusible components at the front and rear of the plume, respectively. Carbonated or carbonatite melt is the best candidate for the fusible component of the plumes, especially for the upper mantle and transition zone. Hydrocarbon-bearing hydrous melt serves as the liquid component in mantle plumes arising from the CMB. The conclusions are based on recent data on melting in mantle systems with CO2 and reduced C-O-H fluid, the stability of diamond and carbide phases, and the role of redox conditions in carbon and hydrogen cycles.

Язык оригиналаанглийский
Название основной публикацииMagmas Under Pressure
Подзаголовок основной публикацииAdvances in High-Pressure Experiments on Structure and Properties of Melts
ИздательElsevier
Страницы43-82
Число страниц40
ISBN (электронное издание)9780128113011
ISBN (печатное издание)9780128112748
DOI
СостояниеОпубликовано - 1 янв 2018
Опубликовано для внешнего пользованияДа

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