Advances in Earth Science ›› 1999, Vol. 14 ›› Issue (2): 153-158. doi: 10.11867/j.issn.1001-8166.1999.02.0153

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ADVANCES IN THE PHYSICS PROCESS RESEARCH ON MAGMATISM

LAI Shaocong   

  1. Northwest University,Xi an 710069,China
  • Received:1998-06-10 Revised:1998-10-19 Online:1999-04-01 Published:1999-04-01

LAI Shaocong. ADVANCES IN THE PHYSICS PROCESS RESEARCH ON MAGMATISM[J]. Advances in Earth Science, 1999, 14(2): 153-158.

The newdevelopment and progress in density,viscosity,melt structure and fluid dynamics of the magmatic silicate melt-silicate crystal/liquid suspension are briefly summarized in this paper.Then the relationship and constrainting conditions between physical features ofthe magma andmagmatism,magma transport aswell asmagma emplacementmechanism are discussed in this paper.It is believed thatthe viscosityof silicate melt dependenton the characters of its chemical composition,however,the change of melt structure is the reason for the change of viscosity. The relationship between viscosity and chemical composition,actually,is the reflection of the relationship between viscosity and melt structure.In some degree the transport,emplacement and eruption pattern ofthe magmas are determined byviscosityofthe melt.In addition,the density and buoyancy are important constrainting conditions formagma ascending and emplacement.In fact,the earth s crust is a density filter for magma rising.Finally the magmas stop ascendingwhen the buoyancy disappears.

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