Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › глава/раздел › научная › Рецензирование
Carbon-bearing magmas in the earth’s deep interior. / Litasov, Konstantin D.; Shatskiy, Anton.
Magmas Under Pressure: Advances in High-Pressure Experiments on Structure and Properties of Melts. Elsevier, 2018. стр. 43-82.Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › глава/раздел › научная › Рецензирование
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TY - CHAP
T1 - Carbon-bearing magmas in the earth’s deep interior
AU - Litasov, Konstantin D.
AU - Shatskiy, Anton
PY - 2018/1/1
Y1 - 2018/1/1
N2 - 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.
AB - 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.
KW - C-O-H fluid
KW - Carbon
KW - Carbonate
KW - Earth’s mantle
KW - Eclogite
KW - Melting
KW - Peridotite
KW - Redox conditions
KW - Subduction
KW - HIGH-PRESSURE
KW - OXYGEN FUGACITY
KW - 6 GPA
KW - CRYSTAL-STRUCTURE
KW - HIGH-TEMPERATURE
KW - LOWER-MANTLE
KW - O-H FLUID
KW - FE-C SYSTEM
KW - MELTING PHASE-RELATIONS
KW - TRANSITION-ZONE
UR - http://www.scopus.com/inward/record.url?scp=85071387899&partnerID=8YFLogxK
U2 - 10.1016/B978-0-12-811301-1.00002-2
DO - 10.1016/B978-0-12-811301-1.00002-2
M3 - Chapter
AN - SCOPUS:85071387899
SN - 9780128112748
SP - 43
EP - 82
BT - Magmas Under Pressure
PB - Elsevier
ER -
ID: 25789051