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豫北地区近几年来一直被定为全国重点监视区之一,但中强地震可能发生在哪里?这是大家所关心的问题。作者根据野外实地调查,并结合前人的地质,石油、煤田勘探,地壳测深等资料,提出了该区的主要构造格架及其新活动特征,晚第三纪以来区域构造应力场,并由此推论了应力的集中部位,同时以大自然的各种客观现象为佐证,检验了这一推论的可靠性,探讨了中强地震可能发生的地区。
In recent years, the north of Henan Province has been designated as one of the key surveillance areas in China. However, it is a matter of concern to all of you that the strong earthquakes may occur. Based on the field survey and the data of predecessors’ geology, petroleum, coal exploration and crustal sounding, the authors propose the main tectonic frameworks and characteristics of their new activities and the tectonic stress fields since the Late Tertiary Based on this, we can deduce the concentrated parts of stress and verify the various objective phenomena of nature to test the reliability of this reasoning and to explore the possible areas where moderate-strong earthquakes may occur.