河北平原第四纪断块扭转运动与地震
TORSIONAL MOVEMENT OF QUARTERNARY FAULT BLOCK AND EARTHQUAKE IN HEBEI PLAIN
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摘要: 地壳是成层的。它被不同深度的断裂切割为许多大小不等的地质块体谓之断块。在区域构造应力场中断块可以某种特定的方式运动。断块运动不仅有利于某些矿产的运移富集1),同时对块内地震的孕育和活动有控制作用。本文根据判定地壳升降运动的主要标志──沉积厚度及岩相探讨河北平原第四纪断块扭转运动与地震的关系。Abstract: The crust is layered,and dissected into many geological blocks of different sizes called fault blocks by faults in different depth.Fault blocks can move in a certain part-icular way in regional structural stress fields.The movement of fault blocks not only are advantageous to the movement and gathering of mineral products, but also can co-ntrol the intraplate earthquake preparation and activity.In this paper, according to the principal marks-deposit depth and lithofacies-for determining crustal rising and descending movements, the relationship between the torsional movement of quarternary fault blocks and earthquakes in Hebei plain is discussed.
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[1] 谢又予等从第四纪沉积相的分析探讨汾渭盆地新构造运动特征,地理集刊10地貌.科学出版社,1976。 [2] 马杏垣等中国东部中,新生代裂陷作用和伸展构造。地质学报,1, 1983。 [3] 张文佑等,断块大地构造学说的理论与实践,现代科学技术简介,科学出版社,1978。 [4] 郭增建等,震源物理,地震出版社,1979。 [5] 中国科学院地质研究所,中国地震地质概论,科学出版社,1974. [6] 国家地震局,中国地震烈度报告,地震出版社,1981年。 [7] 顾功叙等,中国地震目录(公元1831-公元1979) -

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