Formation of the Earth’s Silicate Mantle

  • Vsevolod N. AnfilogovEmail author
  • Yurij V. Khachay
Part of the SpringerBriefs in Earth Sciences book series (BRIEFSEARTH)


This chapter discusses the energy source and the matter content from which the initial Earth’s mantle was formed. The PT conditions by which the mantle accumulation is provided are defined. Attention is drawn to the role of chondrites of different composition in the frame of the Earth’s heterogeneous accumulation model. The conditions are formulated by which a melted layer at the bottom of the mantle is formed. At the bottom boundary of the layer fraction crystallization occurs. The crystallization of Mg-pyroxene and magnesio-wüstite will lead to the formation at the bottom of the mantle of a layer comprising a mixture of these minerals. We note that, based on seismic data, it can be concluded that, namely by that mineral association, there exists a transition layer “D” on the modern core–mantle boundary. The boundaries between layers shift following the body’s growing surface.


Matter composition Initial mantle Mineral association of the transition layer “D” Shifting of the layer’s boundary 


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© The Author(s) 2015

Authors and Affiliations

  1. 1.Institute of MineralogyRussian Academy of SciencesMiassRussia
  2. 2.Institute of GeophysicsRussian Academy of SciencesEkaterinburgRussia

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