塔里木盆地塔中和满西地区石炭系层序地层
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摘要
应用地震、钻井、测井、岩芯及分析化验资料,将塔里木盆地塔中和满西地区石炭系划分为3个地震地层层序与6个沉积层序,其中CⅠ与CⅡ层序为Ⅰ型层序,CⅢ～CⅥ层序为Ⅱ型层序。与标准的Ⅰ型层序比较,区内Ⅰ型层序低位体系域以河流沉积体系为特征,缺失盆底扇、斜坡进积复合体等深水沉积体系;Ⅱ型层序中陆架边缘体系域不发育,主要的沉积体系以浅水碳酸岩台地和海岸平原为特征。石炭系早期层序形成在起伏不平的剥蚀面之上,以填平补齐的充填沉积为主,中后期层序则发育在宽阔平坦的盆地内。这种层序格架明显不同于被动大陆边缘经典型的层序格架,反映了稳定地块内坳陷性盆地的层序特点。
Using the seismic data, drilling, well-logging and well core, combined with the analysis data, the carboniferous are divided into three seismic sequences and six sedimentary sequences. The sequence (CⅠ) and (CⅡ) are the typeⅠsequence, while the CⅢ to CⅥ are the type Ⅱ sequence. By comparison with the standard typeⅠsequence, the LST of typeⅠsequence in the areas are characterized with the river deposit, and lack of the deep water deposition system such as basin floor fans and slope transgress complex. In the type Ⅱ sequences, the SMST are not well-developed, and the main deposit systems are the shallow water carbonate deposit and the sea margin plain deposit. The sequences that formed in the early Carboniferous are on the uneven erosion surface, and the main deposition style is that of filling the surface; while during the middle and latter Carboniferous, the sequences are formed in the broad and even basin. This kind of sequence framework is different from the classic one that derived from the passive continental margin, and reflects the sequence that is developed in the depression basin of the stable platform.
Using the seismic data, drilling, well-logging and well core, combined with the analysis data, the carboniferous are divided into three seismic sequences and six sedimentary sequences. The sequence (CⅠ) and (CⅡ) are the typeⅠsequence, while the CⅢ to CⅥ are the type Ⅱ sequence. By comparison with the standard typeⅠsequence, the LST of typeⅠsequence in the areas are characterized with the river deposit, and lack of the deep water deposition system such as basin floor fans and slope transgress complex. In the type Ⅱ sequences, the SMST are not well-developed, and the main deposit systems are the shallow water carbonate deposit and the sea margin plain deposit. The sequences that formed in the early Carboniferous are on the uneven erosion surface, and the main deposition style is that of filling the surface; while during the middle and latter Carboniferous, the sequences are formed in the broad and even basin. This kind of sequence framework is different from the classic one that derived from the passive continental margin, and reflects the sequence that is developed in the depression basin of the stable platform.
引文
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[3] 郭建华,罗传容,刘生国,等.塔里木盆地前震旦 石炭纪构造演化与石炭纪原型盆地属性[J].矿物岩石,1995,15(3):5057.GUOJian hua,LUOChuan rong,LIUSheng guo,etal.TectonicevolutionofTalimubasinfrompre SiluriantoCarboniferousandpropertiesoftheprimarybasinduringCarboniferousperiod[J].Minerals＆Rocks,1995,15(3):5057.
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[5] 郭建华,曾允孚,翟永红,等.塔中地区石炭系东河砂岩层序地层研究[J].沉积学报,1996,14(2):5665.GUOJian hua,ZENGYong fu,ZHAIYong hong,etal.SequencestratigraphyofCarboniferousDonghesandstoneinTazhongarea,Tarimbasin[J].ActaSedimentologicaSinica,1996,14(2):5665.
[6] 顾家裕.塔里木盆地石炭系东河砂岩沉积环境分析及储层研究.地质学报,1996,70(2):153161.GUJia yu.SedimentaryenvironmentandreservoircharactersoftheCarboniferousDonghesandstoneintheTarimbasin[J].ActaGeologicaSinica,1996,70(2):153161.
[7] 朱怀诚.塔里木盆地草2井东河砂岩段孢子组合的时代[J].微体古生物学报,1998,15(4):395403.ZHUHuai cheng.OntheageofsporeassembleagefromDonghesandstoneinWellCao 2ofnorhtTarimbasin[J].ActaMicropalaeontologicaSinica,1998,15(4):395403.
[8] 赵治信,白顺良.塔里木盆地泥盆 石炭系界线化学 生物地层学对比[A].岩石圈地质科学(四)[C].北京:地质出版社,1996:94100.ZHAOZhi xin,BAIShun liang.Thecomparisonofbio stratigraphyandboundarychemistryoftheDevonianandtheCarboniferousinTarimbasin[A].GeosciencesofLithosphere(Ⅳ)[C].Beijing:GeologicalPublishingHouse,1996:94100.
[9] VailPR.Seismicstratigraphyinterpretationusingsequencestratigraphy,Part1:Seismicstratigraphyinterpretationprocedure[J].AAPGStudGeol,1987,27(1):110.
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[12] 周瑶琪,柴之芳,毛雪瑛,等.混合成因模式 中国南方二叠三叠系地层元素地球化学及其启示[J].地质论评,1991,37(1):5163.ZHOUYao qi,CHAIZhi fang,MAOXue ying,etal.Amixingmodel theelementgeochemistryofpermian triassicbovrdariesinsouthChinaanditsimplication[J].GeologicalReview,1991,37(1):5163.
[13] 郭建华,翟永红,肖传桃,等.塔中地区石炭系高水位期"生屑灰岩"[J].石油勘探与开发,1996,23(2):2731.GUOJian hua,ZHAIYong hong,XIAOChuan tao,etal.SedimentaryfeaturesofhighstandCarboniferousbioclasticlimestoneincentralTarimbasin[J].OilExplorationandExploitation,1996,23(2):2731.
[14] 郭建华,刘生国,肖传桃,等.塔中卡拉沙依组 小海子组层序地层与沉积相[J].石油与天然气地质,1995,16(3):265271.GUOJian hua,LIUShen guo,XIAOChuan tao,etal.SequencestratigraphyandsedimentaryfaciesofKarashayi Xiaohaiziformations,centralTarim[J].Oil＆GasGeology,1995,16(3):26527.
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[16] 郭建华,翟永红,刘生国,等.塔里木盆地古城鼻隆非构造圈闭研究[J].石油与天然气地质,1995,16(3):246251.GUOJian hua,ZHAIYong hong,LIUShen guo,etal.NonstructuraltrapsinGuchengnose upliftarea,Tarimbasin.Oil＆GasGeology,1995,16(3):246251.
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