沂沭活断层北段F_1断层滑动方式的讨论
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
通过野外调查和室内分析,并结合对比南段全新世粘滑破裂的特征,对沂沭活断层北段F_1的滑动方式进行了讨论。断层泥SEM的判别结果表明,晚更新世(Q_3)以前,北段F_1以强烈的粘滑错动为主,而宏观调查及断层泥粘土矿物的分析显示出断层自晚更新世中晚期以来,其滑动方式可能由粘滑向蠕滑转变。结合年代学的研究,初步认为其转变时代为距今5万a左右。该结论对沂沭断裂带及其附近地区的地震预报及工程建设均具有实际意义和参考价值。
Based on field investigation and laboratory analysis,we discussed the slip mode of F_1 in thenorthern segment of the Yishu active fault in this paper. The macroscopic identification and ana-lysis of the composition of clay minerals of fault gouge shows that it slowly sliped with the modeof creeping before late Pleistorene,while micro features indicate that it strongly stick-sliped be-fore Pleistocene.Along with the study of chronology,it is preliminarily interpreted as variousstages from sticking-slipping slide to creep.This result is of practical significance to earthquakeprediction and engineering construction in the area nearby the Yishu fault zone.
引文
1高维明,李家灵,孙竹友.沂沭大陆裂谷的生成与演化.地震地质,1980,2(3):11~18.2场一冲.沂沭活断层的分段特征及地震趋势的预测.地震,1993,1:45~48.3郑朗荪,高维明.郯庐断裂带的分段与沂沭断裂的活动性.中国地震,1988,4(3):123~129.4高维明,林祉祥,郑朗荪,等.鲁南地震危险评定及烈度区划研究成果概述.中国地震,1988,4(3):1~8.5ShimamotoT,LoganJM.EffectsofsimulatedClaygougeontheslidingbehaviorofTennessaesiandstone,Tectono-physics,1981,75:243~255.6张碧秀,汤水安,忻沭断裂带地壳结构特征.中国地震,1988,4(3):16~22.7KanamoriY,MiyakoshiK,KakutaT,etal.Datingfaultactivitybysurfacetexturesofquartzgrainsfromfaultgouge,Engi-neeringGeology,1980,16:243~262.8DenglerL.MicrocracksinCrystallinerocks.Electronmicroscopyinmineralogy,Springer-VerlagINC.,1976,550~558.9杨主恩,张流,石桂梅.粘滑和稳滑实验条件下石英岩的某些形貌特征及其地震地质意义.地震地质,1986,8(2):21~25.10张秉良,冯锦江,牛娈芳,等.红河断裂带断层泥中粘土矿物特征及其地复地质意义.地震地质,1989,11(3):96~97.11黄伟师,从地质地貌标志着沂沭断裂带的新构造特征,中国地震,1988,4(3):143~150.12夏,姚孝新.沂沭断裂带断层泥的研究.中国地震,1988,4(3):152~157.13曾允孚主编.沉积岩石学.北京:地质出版社,1986.14TomooAriyama.ConditionsofresetlingtheESRclorkduringfaulting.ESRdatinganddosimetry,1985,249~256.15陈文寄,计凤桔,李齐.沂沭断裂带断层泥中K-Ar、FT和TL体系年代学含义的初步研究.地震地质,l988,10(4):191~

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心