scholarly journals The role of a mantle plume in the formation of Yellowstone volcanism

2016 ◽  
Vol 43 (3) ◽  
pp. 1132-1139 ◽  
Author(s):  
Tiffany Leonard ◽  
Lijun Liu
Keyword(s):  
Mantle Plume

Role of the deep mantle in generating the compositional asymmetry of the Hawaiian mantle plume

2011 ◽  
Vol 4 (12) ◽  
pp. 831-838 ◽  
Author(s):  
Dominique Weis ◽  
Michael O. Garcia ◽  
J. Michael Rhodes ◽  
Mark Jellinek ◽  
James S. Scoates
Keyword(s):  
Mantle Plume ◽  
Deep Mantle

scholarly journals Genesis of high-Ni olivine phenocrysts of the Dali picrites in the Central Emeishan large igneous province

2020 ◽  
pp. 1-10
Author(s):  
Wen-Chang Cai ◽  
Zhao-Chong Zhang ◽  
Jiang Zhu ◽  
M. Santosh ◽  
Rong-Hao Pan
Keyword(s):  
High Temperatures ◽  
Mantle Plume ◽  
Potential Temperature ◽  
Large Igneous Province ◽  
Thermal Plume ◽  
Emeishan Large Igneous Province ◽  
Igneous Province ◽  
High Concentrations ◽  
Mantle Potential Temperature

Abstract The Emeishan large igneous province (ELIP) in SW China is considered to be a typical mantle-plume-derived LIP. The picrites formed at relatively high temperatures in the ELIP, providing one of the important lines of argument for the role of mantle plume. Here we report trace-element data on olivine phenocrysts in the Dali picrites from the ELIP. The olivines are Ni-rich, and characterized by high (>1.4) 100×Mn/Fe value and low (<13) 10 000×Zn/Fe value, indicating a peridotite-dominated source. Since the olivine–melt Ni partition coefficient (KDNiol/melt) will decrease at high temperatures and pressures, the picrites derived from peridotite melting at high pressure, and that crystallized olivines at lower pressure, can generate high concentrations of Ni in olivine phenocrysts, excluding the necessity of a metasomatic pyroxenite contribution. Based on the Al-in-olivine thermometer, olivine crystallization temperature and mantle potential temperature (TP) were calculated at c. 1491°C and c. 1559°C, respectively. Our results are c. 200°C higher than that of the normal asthenospheric mantle, and are consistent with the role of a mantle thermal plume for the ELIP.

Evidence for the essential role of CO2 in the volcanism of the waning Caroline mantle plume

2020 ◽  
Vol 290 ◽  
pp. 391-407
Author(s):  
Guo-Liang Zhang ◽  
Shuai Wang ◽  
Ji Zhang ◽  
Ming-Jun Zhan ◽  
Zhi-Hua Zhao
Keyword(s):  
Mantle Plume ◽  
Essential Role

scholarly journals Cenozoic magmatism in the western Ross Embayment: Role of mantle plume versus plate dynamics in the development of the West Antarctic Rift System

2002 ◽  
Vol 107 (B9) ◽  
pp. ECV 5-1-ECV 5-22 ◽  
Author(s):  
Sergio Rocchi ◽  
Pietro Armienti ◽  
Massimo D'Orazio ◽  
Sonia Tonarini ◽  
Jan R. Wijbrans ◽  
...  
Keyword(s):  
Mantle Plume ◽  
Rift System ◽  
The West ◽  
West Antarctic ◽  
Plate Dynamics ◽  
West Antarctic Rift System ◽  
West Antarctic Rift ◽  
Cenozoic Magmatism
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