收稿日期: 1998-06-10
修回日期: 1998-10-19
网络出版日期: 1999-04-01
基金资助
陕西省教委专项科研基金“秦岭造山带勉县—略阳地区蛇绿岩地球化学及超镁铁质糜棱岩型金矿床”(项目编号:PJ96220)和西北大学科研基金“大别山南缘随州—京山地区蛇绿混杂岩带火山岩同位素年代学及地球化学”(97NW23)资助。
ADVANCES IN THE PHYSICS PROCESS RESEARCH ON MAGMATISM
Received date: 1998-06-10
Revised date: 1998-10-19
Online published: 1999-04-01
赖绍聪 . 岩浆作用的物理过程研究进展[J]. 地球科学进展, 1999 , 14(2) : 153 -158 . DOI: 10.11867/j.issn.1001-8166.1999.02.0153
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.
Key words： Density; Viscosity; Silicate melt structure; Fluid dynamics; Magmatism.
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