15. SEISMIC PROPERTIES OF SHEETED DIKES FROM HOLE 504B, ODP LEG 1111
15. SEISMIC PROPERTIES OF SHEETED DIKES FROM HOLE 504B, ODP LEG 1111
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15. ODP 1111 段 504B 孔板岩墙的地震特性
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
R. Baud
中科院分区：
文献类型：
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作者：
N. Christensen;W. Wepfer;R. Baud
在ODP 111航次期间，对从504 B孔获得的8个席状岩脉岩石样品在围压为600 MPa时进行了地震速度测量。一般而言，压缩波和剪切波速度高于在DSDP第83航次期间从钻孔中获得的上覆岩脉岩石中测得的速度。在2C层中观察到的速度梯度是孔隙度随深度减小和变质程度增加的结果。实验室测量的第111航段岩脉岩石的速度与岛屿湾、Samail和Troodos Ophietan报告的岩脉岩石的速度相似。
Seismic velocities have been measured at confining pressures to 600 MPa for eight samples of sheeted dike rock ob tained from Hole 504B during Leg ODP 111. The compressional- and shear-wave velocities are, in general, higher than the velocities measured in overlying dike rocks obtained from the hole during DSDP Leg 83. The velocity gradients ob served in Layer 2C result from decreasing porosity with depth and increasing metamorphic grade. The laboratory-mea sured velocities of the Leg 111 dike rocks are similar to those of dike rocks reported for the Bay of Islands, Samail, and Troodos ophiolites.