沈阳市长白乡—观音阁(F6)断层活动性的钻探研究
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摘要
本文主要根据《沈阳活断层探测与地震危险性评价》项目中跨断层探测工作的结果,对穿过沈阳市区的主要目标断层——长白乡—观音阁断裂的活动性予以阐述。通过对断层两个钻孔岩芯的地层对比及年代学研究,建立跨断层柱状剖面,获得各主要地层的形成年代,并取得以下认识:长白乡—观音阁断层在沈水湾公园场地没有错断到晚更新世地层,中更新世晚期以来断层没有活动。
Based on the preliminary drill results across the fault for the project of"Active fault detection and seismic risk evaluation in Shenyang city", this paper discusses the activities of key target faults, Changbaixiang—Guanyinge fault, developed in Shenyang.The column section at two sides of the target faults are established through the stratigraphic correlation, and the formation ages for the main boundary atrata ara obtained from chronologicai data analysis.The major conclusions of study are as follows:Changbaixiang—Guanyinge fault at the Shenshuiwan farm has no effect on the overlying Late Pleistocene, which indicates that this fault is not active since Mid Pleistocene.
Based on the preliminary drill results across the fault for the project of"Active fault detection and seismic risk evaluation in Shenyang city", this paper discusses the activities of key target faults, Changbaixiang—Guanyinge fault, developed in Shenyang.The column section at two sides of the target faults are established through the stratigraphic correlation, and the formation ages for the main boundary atrata ara obtained from chronologicai data analysis.The major conclusions of study are as follows:Changbaixiang—Guanyinge fault at the Shenshuiwan farm has no effect on the overlying Late Pleistocene, which indicates that this fault is not active since Mid Pleistocene.
引文
[1]万波,等.沈阳市(含抚顺)活断层探测与地震危险性评价
[2]辽宁省地质局水文地质大队,辽宁第四纪地质,1983
[3]2×200兆瓦低温核供热示范工程核供热站厂址地震调查与评价报告[R],辽宁省地震研究所,中国地震局地球物理研究所,2002
[4]沈阳市地震小区划报告(内部资料),辽宁省地震局,1993
[5]沈阳地区(三环路内)断裂分布及活动断裂研究,内部资料,辽宁省地震研究所,2000
[2]辽宁省地质局水文地质大队,辽宁第四纪地质,1983
[3]2×200兆瓦低温核供热示范工程核供热站厂址地震调查与评价报告[R],辽宁省地震研究所,中国地震局地球物理研究所,2002
[4]沈阳市地震小区划报告(内部资料),辽宁省地震局,1993
[5]沈阳地区(三环路内)断裂分布及活动断裂研究,内部资料,辽宁省地震研究所,2000
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