Many seismic profiles in South China have demonstrated that low-velocity layer generally exists in the middle crust.
华南沿海众多的地震测深剖面揭示出地壳不同深度上存在着壳内低速层。
The crust is multilayered and there exists a low velocity layer in the lower crust.
地壳由多层介质组成，在下地壳中存在着低速层。
The geothermal anomaly, low velocity zone and high conductivity layer in crust, and frequent occurrence of strong earthquakes show that the study area is an active area of modern tectonization.
地热异常、地壳内存在低速层和高导层、强烈地震频繁发生等现象说明，这一地区是现代构造运动的活动区。
There is a low velocity-high conductive layer in the mid-crust of the Songliao Basin.
对于地壳的地球物理详细探测发现中地壳普遍存在着高导层和低速层。
The horizontal low velocity layer, the vertical low velocity zone and the high velocity layer in the basement of the lower crust are related to the ore_forming processes.
文中还探讨了中国大陆主要成矿域岩石圈的现今活动性，以及地壳厚度、壳内低速层、“墙式”地震剪切波垂向低速带和下地壳底部高速层（体）的分布特征以及与成矿作用的关系。
The horizontal low velocity layer, the vertical low velocity zone and the high velocity layer in the basement of the lower crust are related to the ore_forming processes.
文中还探讨了中国大陆主要成矿域岩石圈的现今活动性，以及地壳厚度、壳内低速层、“墙式”地震剪切波垂向低速带和下地壳底部高速层（体）的分布特征以及与成矿作用的关系。
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