海拉尔盆地查干诺尔凹陷伊敏组孢粉组合及其地质意义
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摘要
为了建立查干诺尔凹陷伊敏组钻井地层等时对比标准和恢复沉积时期的古气候,对海参8井伊敏组开展了孢粉地层学和孢粉古气候学的系统研究。使用盐酸—氢氟酸冷处理法获取了岩石中十分丰富的孢粉化石,自下而上划分为2个孢粉组合,Lygodioisporites-Cyathidites-Triporoletes组合分布于伊敏组1段,Leiotriletes-PilosisporiteAsteropollis组合分布于伊敏组2+3段,是研究区钻井地层等时对比的有效标志。孢粉组合对比表明,伊敏组的地质时代为Barremian至Aptian期。依据孢粉谱恢复古气候的演变规律为:伊敏组1段植被演替是针叶-灌木林→灌草丛→常绿阔叶林、灌草丛→针叶-灌木林,气候由湿润的热带向热带、北亚热带气候转变;伊敏组2+3段植被演替是灌草丛→针阔叶混交林、灌草丛→针叶林、灌草丛→针阔叶混交林,气候属于湿润的热带气候。
In order to establish the isochronic comparing standard of the drilled formations in Yimin Formation and restore the paleo-climate in the sedimentary periods for Chagannuoer Sag,the systematical studies on the palynostratigraphy and sporopollen palaeoclimatology of Yimin Formation in Well Haican-8 were conducted. With the help of the cold treating method by hydrochloric acid and HF acid,the pretty abundant palynologic fossils were obtained in the rocks and classified into two sporopollen assemblages from top to bottom,Lygodioisporites-Cyathidites-Triporoletes Assemblage distributes in Member 1 of Yimin Formation,while Leiotriletes-Pilosisporite-Asteropollis Assemblage in Member 2 + 3 of Yimin Formation,these assemblages can be recognized the effective markers for the isochronic comparison of the drilled strata in the study area. The assemblage contrast shows that the geological age of Yimin Formation is from Barremian to Aptian period. According to the evolution laws of the restored paleo-climate by the pollens,the vegetations of Member 1 in Yimin Formation develop from the coniferous shrub wood to shrub-tussock,evergreen broad-leaf forest mixed with the shrub-tussock to coniferous shrub wood. The climate during Member 1changes from the humid tropical to sub-tropical one; while the vegetation of Member 2 + 3 evolves from the shrubtussock to conifer-broadleaf forest mixed with the shrub-tussock to coniferous forest and shrub-tussock to coniferbroadleaf forest,the climate during this time belongs to the humid tropics.
In order to establish the isochronic comparing standard of the drilled formations in Yimin Formation and restore the paleo-climate in the sedimentary periods for Chagannuoer Sag,the systematical studies on the palynostratigraphy and sporopollen palaeoclimatology of Yimin Formation in Well Haican-8 were conducted. With the help of the cold treating method by hydrochloric acid and HF acid,the pretty abundant palynologic fossils were obtained in the rocks and classified into two sporopollen assemblages from top to bottom,Lygodioisporites-Cyathidites-Triporoletes Assemblage distributes in Member 1 of Yimin Formation,while Leiotriletes-Pilosisporite-Asteropollis Assemblage in Member 2 + 3 of Yimin Formation,these assemblages can be recognized the effective markers for the isochronic comparison of the drilled strata in the study area. The assemblage contrast shows that the geological age of Yimin Formation is from Barremian to Aptian period. According to the evolution laws of the restored paleo-climate by the pollens,the vegetations of Member 1 in Yimin Formation develop from the coniferous shrub wood to shrub-tussock,evergreen broad-leaf forest mixed with the shrub-tussock to coniferous shrub wood. The climate during Member 1changes from the humid tropical to sub-tropical one; while the vegetation of Member 2 + 3 evolves from the shrubtussock to conifer-broadleaf forest mixed with the shrub-tussock to coniferous forest and shrub-tussock to coniferbroadleaf forest,the climate during this time belongs to the humid tropics.
引文
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[16]蒙启安,万传彪,乔秀云,等.内蒙古海拉尔盆地大磨拐河组孢粉组合[J].地层学杂志,2003,27(3):173-184.
[17]黄清华,李春柏,孔惠,等.海拉尔盆地南部早白垩世地层及其孢粉组合[J].微体古生物学报,2004,21(4):431-438.
[18]李春柏,万传彪,乔秀云,等.海拉尔盆地海参1井伊敏组孢粉组合的地层意义[J].地层学杂志,2007,31(1):23-34.
[19]邵红君,万传彪,任延广,等.海拉尔盆地贝16井含油地层划分对比[J].世界地质,2007,26(2):230-239.
[20]王丽岩,孙跃武,乔秀云,等.海拉尔盆地早白垩世孢粉古气候特征[J].大庆石油地质与开发,2008,27(5):39-42.
[21]刘继莹.海拉尔盆地查干诺尔凹陷大磨拐河组孢粉组合及其地质意义[J].大庆石油地质与开发,2011,30(3):51-58.
[22]程金辉,尚玉珂.内蒙古满洲里扎赉诺尔煤矿早白垩世孢粉组合序列和古气候研究[J].古生物学报,2015,54(3):316-341.
[23]曹瑞城,李春柏,蒋鸿亮,等.海拉尔—塔木察格盆地地质特征与油气富集规律[J].大庆石油地质与开发,2014,33(5):124-130.
[24]李子顺,彭威,申文静,等.海拉尔盆地外围凹陷与乌尔逊—贝尔凹陷油气地质特征类比[J].大庆石油地质与开发,2014,33(5):131-137.
[25]李春柏,蒙启安,朱德丰,等.海拉尔—塔木察格盆地原型特征与控油作用[J].大庆石油地质与开发,2014,33(5):138-146.
[26]李文国.内蒙古自治区岩石地层[M].武汉:中国地质大学出版社,1996:1-344.
[27]高瑞祺,赵传本,乔秀云,等.松辽盆地白垩纪石油地层孢粉学[M].北京:地质出版社.1999:1-373.
[28]万传彪,赵传本,乔秀云,等.中国早白垩世中、晚期被子植物花粉的特征及其意义[J].大庆石油地质与开发,2004,23(2):21-24.
[2]Skelton P W,Spicer R A,Kelley S P,et al.The Cretaceous World[M].Cambridge:Cambridge University Press,2003:360.
[3]Fllmi K B.Early Cretaceous life,climate and anoxia[J].Cretaceous Research,2012,35(35):230-257.
[4]Herman A B,Spicer R A.New quantitative palaeocolimate data for the Late Cretaceous Arctic:evidence for a warm polar ocean[J].Palaeogeography,Palaeoclimatology,Palaeoecology,1997,128(1-4):227-251.
[5]Spicer R A,Herman A B.The Late Cretaceous environment of the Arctic:a quantitative reassessment based on plant fossils[J].Palaeogeography,Palaeoclimatology,Palaeoecology 2010,295(3-4):423-442.
[6]Herman A B,Spicer R A,Spicer T E V.Environmental constraints on terrestrial vertebrate behaviour and reproduction in the high Arctic of the Late Cretaceous[J].Palaeogeography,Palaeoclimatology,Palaeoecology,2016,441(2):317-338.
[7]Fiorillo A R,Mc Carthy P J,Flaig P P.A multi-disciplinary perspective on habitat preferences among dinosaurs in a Cretaceous Arctic greenhouse world,North Slope,Alaska(Prince Creek Formation:lower Maastrichtian)[J].Palaeogeography,Palaeoclimatology,Palaeoecology,2016,441(2):377-389.
[8]Kauffman E G,Hart M B.Cretaceous bio-events[C]//Walliser O H.Global Events and Event Stratigraphy in the Phanerozoic.Berlin:Springer-Verlag,1996:285-312.
[9]Sun Yuewu,Li Xiang,Zhaoguowei,et al.Aptian and Albian atmospheric CO2changes during oceanic anoxic events:evidence from fossil Ginkgo cuticles in Jilin Province,Northeast China[J].Cretaceous Research,2016,62(7):130-141.
[10]封东晓.惠民凹陷南斜坡强分割地区地层对比方法[J].特种油气藏,2014,21(6):47-51.
[11]樊奇,朱爱国,田继军,等.准噶尔盆地滴南凸起白垩系清水河组层序地层划分及沉积特征[J].油气地质与采收率,2015,22(4):38-43.
[12]Galloway J N,Tullius D N,Evenchick C A,et al.Early Cretaceous vegetation and climate change at high latitude:Palynological evidence from Isachsen Formation,Arctic Canada[J].Cretaceous Research,2015,56(9-12):399-420.
[13]蒲荣干,吴洪章.兴安岭地区兴安岭群和扎赉诺尔群的孢粉组合及其地层意义[J].中国地质科学院沈阳地质矿产研究所所刊,1985(11):47-113.
[14]万传彪,任延广,迟元林,等.海拉尔盆地孢粉组合及其地层时代[J].长春科技大学学报,2000,30(增1):60-65.
[15]Wan Chuanbiao,Qiao Xiu-yun,Xu Yanbin,et al.Sporopollen assemblages from the Cretaceous Yimin Formation of the Hailar Basin,Inner Mongolia,China[J].Acta Geologica Sinica,2005,79(4):459-470.
[16]蒙启安,万传彪,乔秀云,等.内蒙古海拉尔盆地大磨拐河组孢粉组合[J].地层学杂志,2003,27(3):173-184.
[17]黄清华,李春柏,孔惠,等.海拉尔盆地南部早白垩世地层及其孢粉组合[J].微体古生物学报,2004,21(4):431-438.
[18]李春柏,万传彪,乔秀云,等.海拉尔盆地海参1井伊敏组孢粉组合的地层意义[J].地层学杂志,2007,31(1):23-34.
[19]邵红君,万传彪,任延广,等.海拉尔盆地贝16井含油地层划分对比[J].世界地质,2007,26(2):230-239.
[20]王丽岩,孙跃武,乔秀云,等.海拉尔盆地早白垩世孢粉古气候特征[J].大庆石油地质与开发,2008,27(5):39-42.
[21]刘继莹.海拉尔盆地查干诺尔凹陷大磨拐河组孢粉组合及其地质意义[J].大庆石油地质与开发,2011,30(3):51-58.
[22]程金辉,尚玉珂.内蒙古满洲里扎赉诺尔煤矿早白垩世孢粉组合序列和古气候研究[J].古生物学报,2015,54(3):316-341.
[23]曹瑞城,李春柏,蒋鸿亮,等.海拉尔—塔木察格盆地地质特征与油气富集规律[J].大庆石油地质与开发,2014,33(5):124-130.
[24]李子顺,彭威,申文静,等.海拉尔盆地外围凹陷与乌尔逊—贝尔凹陷油气地质特征类比[J].大庆石油地质与开发,2014,33(5):131-137.
[25]李春柏,蒙启安,朱德丰,等.海拉尔—塔木察格盆地原型特征与控油作用[J].大庆石油地质与开发,2014,33(5):138-146.
[26]李文国.内蒙古自治区岩石地层[M].武汉:中国地质大学出版社,1996:1-344.
[27]高瑞祺,赵传本,乔秀云,等.松辽盆地白垩纪石油地层孢粉学[M].北京:地质出版社.1999:1-373.
[28]万传彪,赵传本,乔秀云,等.中国早白垩世中、晚期被子植物花粉的特征及其意义[J].大庆石油地质与开发,2004,23(2):21-24.
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