高温高压下岩石波速与地壳深部的物质组成

WAVE VELOCITY IN ROCKS UNDER HIGH TEMPERATURE AND PRESSURE AND COMPOSITION OF THE DEEP CRUST

通过对高温高压下岩石波速实验资料的综合研究得出：岩石波速及速度各向异性可用于确定地壳深部各层的组成和界面性质;岩石波速随构造环境而变化；同一波速层由成分和成因上不同的岩石组合而成利用统计分析后的高温高压波速数据。

Ths paper deals with the synthetical study of the experimental data on wave velocities in rocks under high temperature and pressure. It shows clearly that the anisotropy of the wave velocity can be used to infer the composition and the feature of different velocity-layer boundaries in the deep crust; the wave velocity in rocks changes with tectonic environments and the same velocity-layer might consists of the rocks of different composition and origin, 42 formulas showing the relationship of ρ-Vp have been glven and diagram ofρ- Vp for distinguishing different rocks at the deep crust has also been drawn according to statistics on the experimentaI data.