渤海湾中生代地层剥蚀量及盆地演化
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摘要
文章首先利用地震层速度法、镜质体反射率法、声波时差法、地质外推法、磷灰石裂变径迹法等确定渤海湾盆地区中生界三叠系、侏罗系、白垩系的剥蚀量 ,恢复了其原始地层厚度 ,分析了中生代不同时期地层的分布状态 ,盆地性质和展部特点。认为渤海湾盆地三叠系沉积时期为大型内陆盆地 ,末期抬升遭受剥蚀。侏罗系和白垩系沉积时期为北东向展布的小型山间盆地群。进入新生代后 ,形成了一个受NNE、NE向断层控制的半地堑式复合盆地 ,叠置于中生代盆地之上。不同时代的地层的不同叠合方式形成了中坳新坳、中坳新隆、中隆新坳、中隆新隆 4种叠合单元类型 ,不同类型的叠合单元经历了不同的沉降史 ,具有不同的石油地质意义
In Bohai Gulf Basin,the eroded thicknesses of the Triassic,Jurassic and Cretaceous,Mesozoic,were determined,their original thicknesses were restored and the strata distribution,basin nature and expansion characteristics during different times in Mesozoic were analyzed by use of the seismic interval velocity,R o,acoustic slowness,geological extrapolation and apatite fission track methods.It was considered that the Bohai Gulf Basion was a large continental basin during Triassic and was uplifted and eroded at the end of Triassic;it was composed of a group of small NE intermountain basins during Jurassic and Cretaceous;and it was a half-graben composite basin controlled by NNE and NE faults and superposed on the Mesozoic basin.There are four types of superposition units in Bohai Gulf Basin,the Cenozoic depression superposing on the Mesozoic depression,the Cenozoic uplift on the Mesozoic depression,the Cenozoic depression on the Mesozoic uplift and the Cenozoic uplift on Mesozoic uplift.Different superposition units are of distinct petroleum geological significances because of having undergone different sedimentary histories.
In Bohai Gulf Basin,the eroded thicknesses of the Triassic,Jurassic and Cretaceous,Mesozoic,were determined,their original thicknesses were restored and the strata distribution,basin nature and expansion characteristics during different times in Mesozoic were analyzed by use of the seismic interval velocity,R o,acoustic slowness,geological extrapolation and apatite fission track methods.It was considered that the Bohai Gulf Basion was a large continental basin during Triassic and was uplifted and eroded at the end of Triassic;it was composed of a group of small NE intermountain basins during Jurassic and Cretaceous;and it was a half-graben composite basin controlled by NNE and NE faults and superposed on the Mesozoic basin.There are four types of superposition units in Bohai Gulf Basin,the Cenozoic depression superposing on the Mesozoic depression,the Cenozoic uplift on the Mesozoic depression,the Cenozoic depression on the Mesozoic uplift and the Cenozoic uplift on Mesozoic uplift.Different superposition units are of distinct petroleum geological significances because of having undergone different sedimentary histories.
引文
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12 GleadowAJW ,DuddyIR ,GreenPF .Cofinedfissiontracklengthsinapatite:adiagnostictoolforthermalhis toryanalysis.ContribMineralPetrol,1986;94:405—415
13 赵孟为.磷灰石裂变径迹法在盆地地热史研究中的应用.石油学报,1992;13(4):1～9
14 王世成,冯石,康铁笙等.临清坳陷钻井磷灰石样品的裂变径迹长度分布及在热史研究和构造上的意义.科学通报,1992;37(22):2069～2071
15 康铁笙,翟鹏济,冯石等.用裂变径迹法研究沉积盆地的地质热历史.科学通报,1990;35(1):60～62
16 康铁笙,王世成,翟鹏济等.用裂变径迹研究地质热历史的方法及其临清坳陷的应用.石油学报,1990;11(2):22～32
17 华北油田石油地质编写组.中国石油地质志(卷五).北京:石油工业出版社,1988:463～469
2 郑德文,张培震,万景林.碎屑颗粒磷灰石裂变径迹法在制约地层年龄中的应用.矿物岩石地球化学通报,2001;20(4):465～467
3 姜亮,周新华,金强.利用磷灰石裂变径迹研究西湖凹陷的古地温.石油大学学报(自然科学版),2001;25(1):30～33
4 王军.利用磷灰石裂变径迹计算隆升速率的一些问题.地质科技情报,1997;16(1):97～102
5 吴富强,刘家铎,何明喜等.磷灰石裂变径迹分析在焉耆盆地油气勘探中的应用.成都理工学院学报,2000;27(2):141～144
6 周祖翼,DonelickR .基于磷灰石裂变径迹分析数据的时间-温度历史的多元动力学模拟.石油实验地质,2001;23(1):97～102
7 周中毅,潘长春.沉积盆地古地温测定方法及其应用.广州:广东科技出版社,1992:68～104
8 康铁笙,王世成.地质历史研究的裂变径迹法.北京:科学技术出版社,1991:9～25
9 LaslettGM ,GreenPE ,DuddyIRetal.Thermalannealingoffissiontracksinapatite2-aquantitativeannylysis.ChemGeol,1987;65:1—13
10 GreenPF .Therelationshipbetweentrackshorteningandfissiontracksagereductioninapatite:combinedinfluencesofinherentinstability,annealinganisotropy,lengthbiasandsystemcalibration.EarthPlanetSciLett,1991;104:181—195
11 KevinD .ThermalsignificanceoffissiontracksinapatiteI-Aqualitativedescription.ChemGeol(IsotGeosciSect),1986;59:237—253
12 GleadowAJW ,DuddyIR ,GreenPF .Cofinedfissiontracklengthsinapatite:adiagnostictoolforthermalhis toryanalysis.ContribMineralPetrol,1986;94:405—415
13 赵孟为.磷灰石裂变径迹法在盆地地热史研究中的应用.石油学报,1992;13(4):1～9
14 王世成,冯石,康铁笙等.临清坳陷钻井磷灰石样品的裂变径迹长度分布及在热史研究和构造上的意义.科学通报,1992;37(22):2069～2071
15 康铁笙,翟鹏济,冯石等.用裂变径迹法研究沉积盆地的地质热历史.科学通报,1990;35(1):60～62
16 康铁笙,王世成,翟鹏济等.用裂变径迹研究地质热历史的方法及其临清坳陷的应用.石油学报,1990;11(2):22～32
17 华北油田石油地质编写组.中国石油地质志(卷五).北京:石油工业出版社,1988:463～469
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