太原盆地构造格局及其与地震活动水平的新认识

太原盆地存在两组断裂，一组为横向断裂，即北东东－东西向断裂，是燕山期或晚古生代的断裂，其中有些断裂在上新世初仍有活动，但活动的幅度和规模均较小；另一组为纵向断裂，即北北东－北北西向断裂，为上新－第四纪断裂，活动较强，但规模不大，太原盆地的中小地震可能与之有关。

The Tectonic Regime and Earthquake Intensity in Taiyuan Basin

There are two groups of faults in Taiyuan basin. The one, occurs in Mesozoic or Late Palaeozoic, is classified as cross faults in NEE-EW trending, some of which activated at Early Pliocene, but in small scale and intensity. the other, occurs in Pliocene-Quaternary, is longitude faults in NNE-NNW the small-mid scaled earthquakes in Taiyuan basin are associated. Fault analysis show that Taiyuan basin is sedimentary basin of Late Cenozoic rather than rifted one. The primary earthquake-derived structure is Late Cenozoic basin, therefore strong earthquakes tend not to occur in Taiyuan basin. However, adjacent strong earthquakes affect Taiyuan basin and possibly cause great loss since it is confided by rifted basins.