| 刘祥,贾志泉,骆志红,窦增宁.青海省玛沁县军功断裂(拉加段)几何特征及活动性探究[J].矿产勘查,2024,15(S2):376-381 |
| 青海省玛沁县军功断裂(拉加段)几何特征及活动性探究 |
| A study on the geometric characteristics and activity of the Jungong Fault(Laga Section)in Maqin County，Qinghai Province |
| 投稿时间：2024-03-18 |
| DOI：10.20008/j.kckc.2024s2052 |
| 中文关键词: 军功断裂 几何特征 活动性 光释光测年 |
| 英文关键词: Jungong Fault geometric features activity photoluminescence dating |
| 基金项目: |
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| 中文摘要: |
| 军功断裂整体倾向北西 40°~50°，倾角 45°左右，在拉加镇附近被 2条次级断裂错断，断层中段向南西突出， 2条次级断裂以走滑特征显著。随着拉加地区大型工程建设需求，查明其几何特征及活动性具有深远意义。笔者根据军功断裂未切割上覆第四系黄土，采集 2组相关光释光测年样品，样品年龄为( 64. 0±3. 3) ka、(47. 0±4. 5)ka，初步厘定了军功断裂在晚更新世之后未发生过活动，并初步探究军功断裂(拉加段)形成机制。 |
| 英文摘要: |
| The overall inclination of the Jungong Fault is 40°-50° northwest，with an inclination angle of 45° ± . It is intersected by two secondary faults near Lajia Town，with the middle section of the fault protrudingsouthwestward. The two secondary faults exhibit significant strike slip characteristics. With the demand for large-scale engineering construction in the Laga region，identifying its geometric characteristics and activity has profound significance. The author collected two sets of related photoluminescence dating samples based on the uncutQuaternary loess overlying the Jungong fault，with ages of(64. 0±3. 3)ka and(47. 0±4. 5)ka，and preliminarilydetermined that the Jungong fault did not experience activity after the Late Pleistocene. And preliminarily explorethe formation mechanism of Jungong Fault(Laga section). |
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