On the dynamic behavior of percolation threshold for partially molten mantle

Abstract

Percolation threshold is an important issue for consideration of a primary magma. The fractional melting and the equilibrium batch melting are important endmember models for the generation of primary magmas. The old concept of the percolation threshold is a static one, whereas Obata and Takazawa (2004) proposed a new concept of the dynamic percolation threshold. They proposed a possibility of a dynamic batch melting in an ascending mantle, in which percolation threshold varies according to the pressure balance between the solid and the fluid and thereby induced microstructural transformation of the partially molten region.