海原大地震
海原大地震，发生拉1920年（民国九年）12月16号（阴历十一月初七）世界协调时十二时六分，震中垃拉中国甘肃省海原县（今宁夏回族自治区海原县）。规模为里氏震级7.8级，矩震级8.5级，最大烈度达修订麦加利地震烈度搭中国地震烈度表12(XII)度，即最高级别烈度个地震。
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