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玉农希断裂呈N2 0°～ 30°E方向展布于四川省西部高原 ,构成贡嘎山第四纪强烈隆起断块的西边界。在北西西 -近东西向的区域主压应力作用下 ,玉农希断裂第四纪以来主要表现为挤压逆冲性质。断错地貌研究结果表明 ,该断裂为一条全新世弱活动断裂 ,平均垂直滑动速率为 0 5～ 0 6mm /a左右。 1975年 1月 15日康定六巴 6 2级地震发生于该断裂上 ,宏观震中位置位于六巴乡溯布 -莫达村附近 ,极震区长轴方向与玉农希断裂走向一致 ,是该断裂最新活动的表现。
The Yu Nongxi fault is distributed in the direction of N2 0 ° ~30 ° E in the western plateau of Sichuan Province, forming the western boundary of the Quaternary Quaternary strongly uplifted block in Gongga Mountain. Under the action of the principal compressive stress in the northwestern-west-near east-west region, the YNF has been characterized mainly by extrusion and thrusting since the Quaternary. The study on the faulted landform shows that the fault was a weak active fault of the Holocene, and the average vertical slip rate was about 0 5 ~ 0 6mm / a. On January 15, 1975, the Kangdingliuba M 6 2 earthquake occurred on the fault and the location of the macro epicenter was near the village of Supibu-Morda in Liupa Township. The direction of the major axis of the very earthquake zone was consistent with that of the Yu Nongxi fault. Break the latest performance of the performance.