bottom marker
英 [ˈbɒtəm ˈmɑːkə(r)]
美 [ˈbɑːtəm ˈmɑːrkər]
网络 底部标志
双语例句
- On seismic sections, we found by level tracing and fossil correlating among some wells that the bottom boundary of the fossil assemblage zone is correlated with the seismic marker T4, so a seismic sequence boundary ( chronohorizon) is recognized.
在地震时间剖面上，通过井间追层及化石对比，发现这一化石组合带底界均与T4地震标准层相对应，形成了一个地震层序界面（等时界面）。