Mount Etna–Iblean volcanism caused by rollback-induced upper mantle upwelling around the Ionian slab edge: An alternative to the plume model

Geology ◽  
2010 ◽  
Vol 38 (8) ◽  
pp. 691-694 ◽  
Author(s):  
W.P. Schellart
Keyword(s):  
Upper Mantle ◽  
Mount Etna ◽  
Mantle Upwelling ◽  
Plume Model ◽  
Upper Mantle Upwelling

scholarly journals An upper-mantle upwelling underneath Ireland revealed from non-linear tomography

2008 ◽  
Vol 175 (1) ◽  
pp. 253-268 ◽  
Author(s):  
B. Wawerzinek ◽  
J. R. R. Ritter ◽  
M. Jordan ◽  
M. Landes
Keyword(s):  
Upper Mantle ◽  
Mantle Upwelling ◽  
Non Linear ◽  
Upper Mantle Upwelling

scholarly journals A proposed model for Mantle upwelling in the Syrian coastal: نموذج مقترح لتقبب المعطف في الساحل السوري

2021 ◽  
Vol 5 (4) ◽  
pp. 46-33
Author(s):  
Rasha Houssam Khaddam Rasha Houssam Khaddam
Keyword(s):  
Partial Melting ◽  
Continental Crust ◽  
Upper Mantle ◽  
Coastal Region ◽  
Mantle Upwelling ◽  
Differential Phase ◽  
Proposed Model ◽  
Syrian Coast

The aim of the research is to develop a conception of the proposed model for Mantle upwelling (diapering) in the coastal region, as the results of this research showed the occurrence of Mantle upwelling regression under the coastal region during the Pliocene period, and this led to the occurrence of basaltic deposits in the Syrian coast during the Pliocene, where we note the center of the vaulting was under Qardaha and Safita, and the Mantle upwelling reached a depth of 35 km within the continental crust, where basalt rocks were formed as a result of partial melting of the upper mantle, and it is upwelled with low melting and differential degrees. Basalt rocks in the initial differential phase of the original basaltic silage.

Water Gas May Not Shift in Deep Earth

2020 ◽  
Author(s):  
Nore Stolte ◽  
Junting Yu ◽  
Zixin Chen ◽  
Dimitri A. Sverjensky ◽  
Ding Pan
Keyword(s):  
Formic Acid ◽  
Upper Mantle ◽  
Free Energy Calculations ◽  
Water Gas Shift ◽  
Ab Initio Molecular Dynamics ◽  
Water Gas Shift Reaction ◽  
Carbon Carrier ◽  
Deep Earth ◽  
Shift Reaction ◽  
Water Gas

The water-gas shift reaction is a key reaction in Fischer-Tropsch-type synthesis, which is widely believed to generate hydrocarbons in the deep carbon cycle, but is little known at extreme pressure-temperature conditions found in Earth’s upper mantle. Here, we performed extensive ab initio molecular dynamics simulations and free energy calculations to study the water-gas shift reaction. We found the direct formation of formic acid out of CO and supercritical water at 10∼13 GPa and 1400 K without any catalyst. Contrary to the common assumption that formic acid or formate is an intermediate product, we found that HCOOH is thermodynamically more stable than the products of the water-gas shift reaction above 3 GPa and at 1000∼1400 K. Our study suggests that the water-gas shift reaction may not happen in Earth’s upper mantle, and formic acid or formate may be an important carbon carrier, participating in many geochemical processes in deep Earth.<br>

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