论文部分内容阅读
利用大别山超高压榴辉岩中绿辉石的实测组构数据，计算了超高压榴辉岩的波速各向异性值．通过与实测值比较，探讨了相辉岩的波速各向异性与绿辉石晶格优选方位的关系．结果表明：绿辉石的晶格优选方位是引起榴辉岩波速各向异性的主要原因，但不是唯一因素，岩石的其它几何学特征如石榴子石形态组构等对其波速也有影响；绿辉石ＬＰＯ在不同的方向上对Ｖｐ的影响不一样；在Ｙ轴上，即平行于面理，垂直干线理的方向上，剪切波Ｖｓ慢波的波速最小，剪切波快波的最大波速和最小波速与线理面理方向有２０°～３０°左右的偏差．
Based on the measured data of omphacite in the UHP eclogite in the Dabie Mountains, the wave velocity anisotropy of the UHP eclogite was calculated. Through the comparison with the measured data, the relationship between the wave velocity anisotropy and the preferred azimuth of the omphacite has been discussed. The results show that the crystal orientation of omphacite is the main reason causing the anisotropy of wave velocity of eclogite, but it is not the only factor. The other geometrical characteristics of rock such as garnet structure affect its wave velocity. Green The effect of pyroxene LPO on Vp is different in different directions. In the direction of Y axis, that is, parallel to the direction of plane and vertical trunk, the wave speed of shear wave Vs slow wave is the minimum, and the maximum of shear wave fast wave Wave velocity and minimum wave velocity with the line direction of 20 ° ~ 30 ° deviation.