北北东—南南西向分布的余震发生在主震的断层面上（或其附近）；
The NNE-SSW distributed aftershocks occurred on, or near, the fault plane of the main shock;
自晚第三纪以来本区主要受北东—北东东向挤压应力场控制。
The region under investigation was subjected to a strong NW-SE tension in Early Tertiary.
自晚第三纪以来本区主要受北东—北东东向挤压应力场控制。
The region under investigation was subjected to a strong NW-SE tension in Early Tertiary.
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