河北磁县西部山区最新地表破裂带的发现与1830年磁县7．5级地震的关系
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摘要
本文介绍了磁县西部山区新近发现的最新地表破裂带。该地表破裂带近东西走向，长约７ｋｍ，由断层崖及地表沟槽组成。在地表粉末状灰岩破碎带中保存大量坚硬灰岩岩块，并见断层破碎带碎石盖在古腐植土之上。断层北盘下降，最新事件的最大垂直落差约７－１０ｍ，以正倾滑为主。个别地点断层显示左旋位移。该地表破裂带沿岔口活动断裂带分布，可认为是１８３０年磁县地震的地表破裂。
The freshest surface fracture zone which has been discovered recently in the west mountain of Cixian County is introduced in this paper. The surface fracture zone is EW striking, 7km long, consisted of fault scarps and surface trenches. There are a lot of blocks of limestone in the fault zone broken in powder and the humu is covered by blocks of limestone in fault zone. The north side of the fault falls down. In the lastest event the maximum veitical dislocation is about 7-10m. The fault activity is mainly dip-slip accompanied with slightly left-lateral slip. The surface fracture is along the Chakou active fault zone. It is considered the surface fracture of the 1830 Cixian County 7. 5 magnitude earthquake.
The freshest surface fracture zone which has been discovered recently in the west mountain of Cixian County is introduced in this paper. The surface fracture zone is EW striking, 7km long, consisted of fault scarps and surface trenches. There are a lot of blocks of limestone in the fault zone broken in powder and the humu is covered by blocks of limestone in fault zone. The north side of the fault falls down. In the lastest event the maximum veitical dislocation is about 7-10m. The fault activity is mainly dip-slip accompanied with slightly left-lateral slip. The surface fracture is along the Chakou active fault zone. It is considered the surface fracture of the 1830 Cixian County 7. 5 magnitude earthquake.
引文
江娃利、刘仲温、李咸叶、李庆山、樊文奎、侯志华，1994，河北省磁县强震区活动构造初步研究，华北地震科学，Vol．12，No．1。张四昌，1985，华北地区地震分布图象与共轭孕震现象，华北地震科学，Vol．3，No．2。章月光等，1980，在地震孕育和发生过程中共轭断层活动的作用．地震地质，Vol．2，No．1。中央地震工作办公室主编，1971，中国地震目录，153，科学出版社。
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