地震韵律的研究方法初探——以合肥市断层活动习性综合探讨为例
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摘要
从利用历年来合肥市工程勘察资料入手,编制合肥市基岩顶面等高和第四系等厚平面和立体图,确定对第四纪地层有影响的活动断层,对其进行浅层地震勘探校核其空间位置,重点进行断层两侧第四系、水系和地貌发育特征对比来反演探讨合肥市断层活动习性.研究的初步结果表明,穿过合肥市的北东、北西和近东西向断层晚第四纪以来均具有相当程度的活动性,其中北东和北西向组断层曾多次活动,并有可能构成合肥市1673年5级地震发生的构造条件.笔者的工作将为条件类似地区构造活动习性和地震韵律研究提供有效途径.
Starting with utilizing materials of engineering reconnaissance of past years in Hefei city, the plane and three-dimensional contour maps of bedrock and Quaternary were made , active faults touched Quaternary were confirmed, in order to checking dimensional location the faults, a technology of shallow layer seismic exploration was adopted. Contrast of develop characteristics of Quaternary, water system and landforms two side of the faults were carried out emphasize particularly on, active behaviors of the faults ware traced and discussed. The Investigative preliminary results declared that the faults trending northeast, northwest and approximate east-west and cutting Hefei city had quite degree activity since late-Quaternary, and the faults trending northeast and northwest have had many time's activity, which formed probably generational tectonic condition of M5,1 673, Hefei. The author's works will offer effective way for research of tectonic active behavior and seismic rhythms in similar area.
Starting with utilizing materials of engineering reconnaissance of past years in Hefei city, the plane and three-dimensional contour maps of bedrock and Quaternary were made , active faults touched Quaternary were confirmed, in order to checking dimensional location the faults, a technology of shallow layer seismic exploration was adopted. Contrast of develop characteristics of Quaternary, water system and landforms two side of the faults were carried out emphasize particularly on, active behaviors of the faults ware traced and discussed. The Investigative preliminary results declared that the faults trending northeast, northwest and approximate east-west and cutting Hefei city had quite degree activity since late-Quaternary, and the faults trending northeast and northwest have had many time's activity, which formed probably generational tectonic condition of M5,1 673, Hefei. The author's works will offer effective way for research of tectonic active behavior and seismic rhythms in similar area.
引文
①安徽省地质调查院 , 1 999,安徽省卫星遥感影像地图 (波段组合 :7, 4, 3 ).
②安徽省地震局 , 1 986 ,合肥市地震小区划、合肥市新区地震小区划报告、合肥市重大工程地震安全性评价报告 .
③安徽省地质局 , 1 977, 1 987, 1 :2 0万合肥幅区域地质调查报告 , 1 :5万合肥幅、肥西幅、撮镇幅、大蜀山幅区域地质调查报告 .
④合肥工业大学 , 1 990 ,合肥盆地地质构造调查报告 .
①合肥市建筑工程勘察院 ,合肥市工程水文地质队 , 1 987,《合肥市地质构造及综合性工程地质研究报告》(基础勘探资料 ).
②安徽省建筑工程勘察院 , 1 996 ,《合肥市新区综合性工程地质研究报告》(基础勘探资料 ).
①国家地震局地质研究所 , 1 986 ,合肥市区地质雷达浅层探测报告
①安徽省地质局物探队 , 1 987,合肥市浅层地震勘探报告
[1] 安徽省地质矿产局.安徽省区域地质志[M].北京:地质出版社,1987.112～114.
[2] 薛爱民,金维浚,袁学城.大别山北缘合肥盆地中、新生代构造演化[J].高校地质学报,1999,5(2);157～163.
[3] 丁丽荣,柳忠泉,雷敏,等.合肥盆地演化历史及构造样式[J].石油实验地质,2002.24(3);204～208.
[4] 张升平,汪启年,张交东,等.合肥盆地电性特征[J].石油实验地质,2002.24(3);250～254.
[5] 薛爱民,杨小毛.磷灰石裂变径迹资料反演合肥盆地古地温和估计沉降与剥蚀率[J].地球物理学报,1994,37(6):787～794.
[6] 姚大全,汤有标,李杰,刘加灿.活动断裂带上粘滑与蠕滑标志及其研究意义[J].地球物理学进展,1993,8(4):140～148.
②安徽省地震局 , 1 986 ,合肥市地震小区划、合肥市新区地震小区划报告、合肥市重大工程地震安全性评价报告 .
③安徽省地质局 , 1 977, 1 987, 1 :2 0万合肥幅区域地质调查报告 , 1 :5万合肥幅、肥西幅、撮镇幅、大蜀山幅区域地质调查报告 .
④合肥工业大学 , 1 990 ,合肥盆地地质构造调查报告 .
①合肥市建筑工程勘察院 ,合肥市工程水文地质队 , 1 987,《合肥市地质构造及综合性工程地质研究报告》(基础勘探资料 ).
②安徽省建筑工程勘察院 , 1 996 ,《合肥市新区综合性工程地质研究报告》(基础勘探资料 ).
①国家地震局地质研究所 , 1 986 ,合肥市区地质雷达浅层探测报告
①安徽省地质局物探队 , 1 987,合肥市浅层地震勘探报告
[1] 安徽省地质矿产局.安徽省区域地质志[M].北京:地质出版社,1987.112～114.
[2] 薛爱民,金维浚,袁学城.大别山北缘合肥盆地中、新生代构造演化[J].高校地质学报,1999,5(2);157～163.
[3] 丁丽荣,柳忠泉,雷敏,等.合肥盆地演化历史及构造样式[J].石油实验地质,2002.24(3);204～208.
[4] 张升平,汪启年,张交东,等.合肥盆地电性特征[J].石油实验地质,2002.24(3);250～254.
[5] 薛爱民,杨小毛.磷灰石裂变径迹资料反演合肥盆地古地温和估计沉降与剥蚀率[J].地球物理学报,1994,37(6):787～794.
[6] 姚大全,汤有标,李杰,刘加灿.活动断裂带上粘滑与蠕滑标志及其研究意义[J].地球物理学进展,1993,8(4):140～148.
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