北淮阳及其邻接区地壳稳定性研究
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摘要
运用多学科、多技术相结合的研究方法,从现今构造应力场特征、现代地壳形变特征、主干断裂构造以及区域断裂活动性分析、新构造运动、地震活动、数值模拟等方面入手,对北淮阳及其邻接区地壳稳定性进行了全面而系统的研究,指出本区地震活动受走滑活动断裂控制,中、强地震集中于区内东南部和西北部NW向与NE向断裂交汇处;第四纪无大规模差异升降运动;数值模拟等综合分析表明,信阳地区的区域构造稳定性高,现代地壳形变量小,应力平缓,地震活动少且弱。
By means of different subjects and te chniques,the paper makes an overall study on the crustal stability of Beihuaiyang region and its adjace nt areas from the aspects of current t ectonic stress fields,principal fa ult structures,analysis of regional fa ults and neotectonic activity,seis mic activity and numerical modeling,etc.It points out that under the action of th e E-W principal stress,the Funiu mou ntains and the Tongbo mountains are upwarped in the north-west of the are a and the Dabie mountains subside in t he south-east of the area.The seismi c activity in the area is controlled by fault structures,middle and strong earthquakes are focused on the north-west and south-east areas intersected by NW-and NE-trending faults.The engineering site in the middle of the area is located in a fault block without active regional fault pass and large-scale Quaternary tectonic movement,which seismic activity is rare and weak,an d it is a stable"island".
By means of different subjects and te chniques,the paper makes an overall study on the crustal stability of Beihuaiyang region and its adjace nt areas from the aspects of current t ectonic stress fields,principal fa ult structures,analysis of regional fa ults and neotectonic activity,seis mic activity and numerical modeling,etc.It points out that under the action of th e E-W principal stress,the Funiu mou ntains and the Tongbo mountains are upwarped in the north-west of the are a and the Dabie mountains subside in t he south-east of the area.The seismi c activity in the area is controlled by fault structures,middle and strong earthquakes are focused on the north-west and south-east areas intersected by NW-and NE-trending faults.The engineering site in the middle of the area is located in a fault block without active regional fault pass and large-scale Quaternary tectonic movement,which seismic activity is rare and weak,an d it is a stable"island".
引文
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XuPeifen,LiuFutian,WangQingchen,CongBolin,ChenHuiandSunRuomei.2000.SeismictomographybeneaththeDabie-Sulucollisionorogen—3-Dvelocitystructuresoflitho-sphere.ActaGeophysicaSinica,43(3):376-382(inChinesewithEnglishabstract).
XieZhi,LiuLaoxing,HuWeijian,XieJianjian,MaJunlinandZhaoHui.2000.ThefocalmechanismofearthquakeinHenananditsadjacentregions.NWSeismologicalJ,24(3):283-286(inChinesewithEnglishabstract).
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YuTinlin,ShiShunyingandJiangYue.1992.ThecompilementandexplanationoftheverticaldeformationofthecurrentcrustinHubeiProvince.JCrustalDeformationandEarthquakes,12(2):74-78(inChinese).
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ZhangQiangandZhuWenyao.2000.PreliminaryconstructiononthemotionmodelsofalltectonicblocksinthecrustofChina.ChineseSciBull,45(9)(inChinese).
ZhengYeandTengJiwen.1989.ThestructureofthecrustanduppermantleintheShuixian-MaanshanzoneandsomecharacteristicsofthesouthpartoftheTan-Lutectonicbelt.ActaGeophysicaSinica,32(6):650-654(inChinesewithEnglishabstract).
董树文,吴宣志,高锐,卢德源,李英康,何义权,汤加富,曹奋扬,候明金,黄得志.1998.大别山造山带地壳速度结构与动力学.地球物理学报,41(3):349-359.
河南省地质矿产厅第三地质调查队.1996.信阳市幅地质图(1:5万)及说明书,39-50.
李长安.1998.桐柏山—大别山掀斜隆起对长江中游环境的影响.地球科学,23(6):562-566.
李延兴,黄诚,胡新康等.2001.板内块体的刚性弹塑性运动模型与中国大陆主要块体的应变状态.地震学报,23(6):570-572.
李玉信,李广坤,刘书丹,金聚忠.1987.河南省平原区第四纪岩相-古地理分析.河南地质,5(4):29-31.
刘经南,姚宜斌,施闯,陶本藻,姜卫平.2002.中国大陆现今垂直形变特征的初步探讨.大地测量与地球动力学,22(3):3-5.
谢智,刘尧兴,胡卫建,谢健健,马俊林,赵晖.2002.河南及邻区地震的震源机制.西北地震学报,24(3):283-286.
徐佩芬,刘福田,王清晨,丛柏林,陈辉,孙若昧.2000.大别—苏鲁碰撞造山带的地震层析成像研究———岩石圈三维速度结构.地球物理学报,43(3):376-382.
杨森楠,杨巍然.1985.中国区域大地构造学.北京:地质出版社,173-175.
杨树新,丁旭初.1994.矿区回归反演及在矿山设计中应用.见:第三届全国地应力会议专辑.北京:地震出版社,78-86.
虞廷林,施顺英,蒋跃.1992.湖北省现代地壳垂直形变图编制与解释.地壳形变与地震,12(2):74-78.
袁学城.1996.中国地球物理图集.北京:地质出版社,30-37.
张强,朱文耀.2000.中国地壳各构造块体运动模型的初建.科学通报,45(9).
郑晔,滕吉文.1989.随县—马鞍山地带地壳与上地幔结构及郯庐构造带南段的某些特征.地球物理学报,32(6):650-654.
ChenGuoda.1996.Diwatheory—Outlineonactivatedtectonicsandmetallogenictheoreticsystemtheory.Changsha:Central-SouthUniversityofTechnologyPress.340-351(inChinesewithEnglishabstract).
DongShuwen,WuXuanzhi,GaoRui,LuDeyuan,LiYingkang,HeYiquan,TangJiafu,CaoFenyang,HouMingjinandHuangDezhi.1998.OnthecrustvelocitylevelsanddynamicsoftheDabieshanorogenicbelt.ActaGeophysicaSinica,41(3):349-359(inChinesewithEnglishabstract).
LiChang’an.1998.EffectoftiltedupliftofTongbo-DabiemountainsonmiddleYangtzeRiverenvironment.JournalofCUG,23(6):562-566(inChinesewithEnglishabstract).
LiYuxin,LiGuangkun,LiuShudanandJinJuzhong.1987.TheanalysisontheQuaternarylithofaciesandplaeogeographyintheflatlandsofHenanProvince.HenanGeology,5(4):29-31(inchinese).
LiuJingnan,YaoYibin,ShiChuang,TaoBenzaoandJiangWeiping.2002.Preliminaryresearchoncharacteristicofpresent-dayverticaldeformationofChinamainland.JGeolandGeodynamics,22(3):3-5(inChinesewithEnglishabstract).
TheThirdGeologySurveyingTeamoftheGeologyandMineralDepartmentofHenanProvince.1996.GeologicalmapofXinyangcityanditsexplanation,39-50(inChinese).
XuPeifen,LiuFutian,WangQingchen,CongBolin,ChenHuiandSunRuomei.2000.SeismictomographybeneaththeDabie-Sulucollisionorogen—3-Dvelocitystructuresoflitho-sphere.ActaGeophysicaSinica,43(3):376-382(inChinesewithEnglishabstract).
XieZhi,LiuLaoxing,HuWeijian,XieJianjian,MaJunlinandZhaoHui.2000.ThefocalmechanismofearthquakeinHenananditsadjacentregions.NWSeismologicalJ,24(3):283-286(inChinesewithEnglishabstract).
YangSennanandYangWeiran.1985.TheregionaltectonicsinChina.Beijing:GeolPublishingHouse,173-175(inChinese).
YangShuxingandTinXuchu.1994.Theinverseregressionintheexcavationsitesanditsapplicationsinminedesign.Thespecialissueonthethirdnationalcrustalstressconference.Beijing:SeismologicalPublishingHouse,78-86(inChinese).
YuTinlin,ShiShunyingandJiangYue.1992.ThecompilementandexplanationoftheverticaldeformationofthecurrentcrustinHubeiProvince.JCrustalDeformationandEarthquakes,12(2):74-78(inChinese).
YuanXuecheng.AtlasofthegeophysicsinChina.Beijing:GeolPublishingHouse,30-37(inChinese).
ZhangQiangandZhuWenyao.2000.PreliminaryconstructiononthemotionmodelsofalltectonicblocksinthecrustofChina.ChineseSciBull,45(9)(inChinese).
ZhengYeandTengJiwen.1989.ThestructureofthecrustanduppermantleintheShuixian-MaanshanzoneandsomecharacteristicsofthesouthpartoftheTan-Lutectonicbelt.ActaGeophysicaSinica,32(6):650-654(inChinesewithEnglishabstract).
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