gneiss

Gneiss is the country rock of eclogites, and there exist mutational relationships in major element components.

片麻岩在主量成分上与榴辉岩及其退变产物（斜长角闪岩）存在突变关系，但微量元素与榴辉岩有一定的相似性；

The regression analysis of thermal conductivity vs. ultrasonic velocity yields a correlation coefficient of about 0.7 for eclogite and 0.5-0.4 for gneiss.

回归计算表明，榴辉岩热导率和P波速度之间的相关性较大，相关系数在0.7左右，片麻岩显示的相关系数比较小，在0.4~0.5之间。

Borehole Televiewer and Borehole Elastic Modulus Test for Transmission Cable Tunnel in Singapore Drilling elastic modulus test on gneiss of dam foundation for Longjiang hydropower station

钻孔电视和钻孔弹模在新加坡电力电缆隧道工程中的应用龙江水电站片麻坝基钻孔弹性模量试验