RUSSIAN JOURNAL OF EARTH SCIENCES, VOL. 19, ES5006, doi:10.2205/2019ES000677, 2019

Contents

• Abstract
• Graphical Abstract
• 1. Introduction
  • 1.1. Unusual Diamonds in Subduction Zone
  • 1.2. Decarbonatisation Reactions in the Mantle
  • 1.3. Volume Effect of Reaction and Generation of Excess Pressure
• 2. The Reaction Between Silica and Carbonate in the Confined Conditions as a Mechanism of the Diamond Formation
  • 2.1. Geologic Setting
  • 2.2. Poroelastic Model of Reactive Inclusion
  • 2.3. Material Parameters
• 3. Results of Calculations
  • 3.1. A Fluid Inclusion Limit
  • 3.2. Spherical Inclusion Solution
• 4. Geochemical Evidences of the High Pressure Conditions at Kamchatka Diamonds Growth
  • 4.1. High Ni and Mn Content in Diamonds as an Indicator of the Carbonyls Involvement
  • 4.2. High Disequilibrium CO Content?
• 5. Conclusions
• Acknowledgments
• References

 
Citation: Simakin A. G. (2019), Poroelastic response to rapid decarbonatisation as a mechanism of the diamonds formation in the mantle wedge of Kamchatka, Russ. J. Earth Sci., 19, ES5006, doi:10.2205/2019ES000677.
 

Copyright 2019 by the Geophysical Center RAS.