热水——日月山断裂带遥感特征初步探讨

热水—日月山断裂带在遥感影像上具有明显的线性构造特征,通过解译认为该断裂带由6条不连续的断裂段右阶羽列组成,活动特征很明显,造成一系列水系断错,最大水平位错940 m,并沿断裂带形成一系列小拉分盆地,认为该断裂带具有较强的右旋走滑特征。其中牧场部—大崖根段北西西向沿湟水河河谷发育,除其本身具有发生强震的构造能力外,其延伸是否与西宁市区中的沿湟水河谷地附近的地表断层相连,对西宁盆地的构造活动形式及地震构造特征有十分重要的意义。历史地震表明曾在热水煤矿与大通山构造复合部位于1927年连续发生多次M4.5～5.5级中强地震。

THE REMOMTE SENSING CHARACTERITIC PRELIMINARY DISCUSSION ON RESHUI-REYUE MOUNTAIN FAULT ZONE

Reshui-Riyue mountain fault zone has obvious linear structural characteristics in remote sensing im- age. The fracture zone constructed by six dextral slip order plume discontinuous fracture sections and clear ac- tivity features by the interpretation, and it caused a series of offset in water system, the maximum horizontal dislocation is 940 m along the fault. At the same time, it formed a series of small pull-apart basins, and the fault has strong dextral strike-slip feature. The direction of ranch department to Daya root fault along Huangshui River Valley is NWW, in addition to its strong earthquakes tectonic capacity, whether the fault extended to Xining basin, and the tectonic activity patterns and structural characteristics of earthquakes are very impor- tant. Historical earthquake research show that tectonic complex located in the department of Reshui coal mine to Datong mountain had consecutive occurred multiple M4. 5 -5.5 moderately strong earthquakes in 1927.