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α-β石英相变
相关语句
  α-β quartz transition
     CALCULATION OF THE STRAIN,STRESS AND ELASTIC ENERGY FOR α-β QUARTZ TRANSITION AND ITS GEOLOGICAL SIGNIFICANCE
     α-β石英相变的应变参数计算及其地质意义
短句来源
  相似匹配句对
     ②phase change of αβ quartz;
     2石英α-β相变;
短句来源
     CALCULATION OF THE STRAIN,STRESS AND ELASTIC ENERGY FOR α-β QUARTZ TRANSITION AND ITS GEOLOGICAL SIGNIFICANCE
     α-β石英相变的应变参数计算及其地质意义
短句来源
     The Application of α-β Quartz Transition to Pressure Calibration in the High Temperature and High Pressure Experimental System
     石英α-β相变在高温高压实验系统压力标定中的应用
短句来源
     A STUDY ON α-QUARTZ β-QUARTZ PHASE TRANSITION OF TWO KINDS OF CHERTS
     两种不同燧石中α-石英 β-石英相变的研究
短句来源
     Phase Transformation of α-β-Sialon by Heat Treatment
     在热处理过程中αβ-Sialon的相变
短句来源
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  α-β quartz transition
It also indicates that the α-β quartz transition and dehydration melting of amphibole and biotite in the lower crustal rocks of the Cenozoic tectonic subsidence area are likely associated with faulting (tensional fault) and seismic activities.
      
The role of the α-β quartz transition as a possible cause of low-velocity layers is discussed.
      
Test of the vibrational modelling for the λ-type transitions: Application to the α-β quartz transition
      
To test the validity of this method for λ-type transitions, we have applied it to the α-β quartz transition (T0=846±1 K).
      
Taking into account the soft-mode associated to the α-β quartz transition, the model reproduces the excess of Cp related to the transition.
      


The variations of the lattice parameters of α - and β -quartz at high pressure and high temperature were calculated with the compressional and thermoelastic properties of α - and β -quartz.Combined the data of α-β quartz transition experiments with the results from calculation,the lattice parameters of α - and β -quartz at their transition pressure and temperature were determined firstly.Then,the strains,stresses and elastic energies for α-β quartz transformation were evaluated according to Hooke's law.The...

The variations of the lattice parameters of α - and β -quartz at high pressure and high temperature were calculated with the compressional and thermoelastic properties of α - and β -quartz.Combined the data of α-β quartz transition experiments with the results from calculation,the lattice parameters of α - and β -quartz at their transition pressure and temperature were determined firstly.Then,the strains,stresses and elastic energies for α-β quartz transformation were evaluated according to Hooke's law.The results indicate that at the pressure of 0~1.1 GPa,the linear strains vary within -0.006~0.005,the volume strains within -0.016~0.012,the stresses within -0.46~0.14 GPa,and the elastic energies within 965~2760 kJ/m 3.At about 0.5 GPa,the strains,stresses and elastic energies achieved their minimum values.Based on the calculated results,the effect of the α-β quartz transformation on the wall rock in the crust during the acid magma intrusion is discussed.

利用已有的α和 β石英压缩性、热膨胀性、弹性及相变温度压力资料 ,计算了α—β石英相转变时 ,α和β石英的晶胞参数。依据虎克定律以及高压下 β石英的弹性参数 ,估算了α—β石英相转变时的应变、应力和应变能。结果表明 ,在 0~ 1 .1GPa条件下 ,随着压力升高 ,αβ石英相变的线应变介于 - 0 .0 0 6~ 0 .0 0 5之间 ,体应变介于 - 0 .0 1 6~ 0 .0 1 2之间 ,应力介于 - 0 .46~ 0 .1 4GPa之间 ;应变能介于 96 5~ 2 76 0kJ/m3之间。当压力为 0 .5GPa左右时 ,αβ石英相变的应变、应力和应变能均达到最小值。在此基础上 ,讨论了壳内大规模酸性岩浆活动引起的αβ石英相变对壳内岩石的作用。

 
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