Spore-Pollen assemblages of Xiu D 1 well in Xiushui basin, northern Liaon-ing Province and their stratigraphic singnificance
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摘要:
孢粉化石采自辽宁省北部秀水盆地的秀D1井,分析、鉴定和系统研究结果表明,来自秀D1井井深62.1~1089.7m的孢粉化石自下而上划分为3个孢粉组合,下部孢粉组合(井深703.85~1089.7m)以Osmundacidites-Klukisporites-Podocarpidites为代表,地质时代为晚侏罗世堤塘期(Tithonian),中部孢粉组合(井深381.5~699.3m)以Densoisporites-Cicatricosisporites-Piceaepollenites为代表,地质时代为早白垩世贝里阿斯期(Berriassian),上部孢粉组合(井深62.1~339m)以Cicatricosisporites-Impardecispo-ra-Pinuspollenites为代表,地质时代为早白垩世凡兰吟期-欧特里夫期(Valanginian-Hauterivian)。秀D1井钻遇地层所含孢粉组合特征在区域上可以与冀北地区大北沟组,辽宁西部地区下白垩统义县组、九佛堂组,松辽盆地东南缘下白垩统火石岭组、沙河子组所产的孢粉组合对比。含孢粉组合地层时代的确定解决了井柱地层的划分,以及与区域地层的对比关系,同时为区域地层古生物研究提供了翔实的基础资料。
Abstract:This paper discusses the sporo-pollen fossils collected from Xiu D1 well in Xiushui basin, northern Liaoning Province. Analysis, identification and systematic studies show that sporo-pollen from the depth 62.1~1089.7 m in Xiu D1 well can be divided in-to 3 assemblages. The upper assemblage (at the depth of 62.1~339m) is represented by genus Cicatricosisporites-Impardecispora-Pinuspollenites, and its geological age is early Cretaceous Valanginian-Hauterivian. The middle assemblage (381.5~699.3m) is represented by genus Densoisporites-Cicatricosisporites-Piceaepollenites, and its geological age is Early Cretaceous Berriassian. The lower assem-blage (703.85~1089.7m) is represented by genus Osmundacidites-Klukisporites-Podocarpidites, and its geological age is Late Jurassic Ti-thonian. The characteristics of 3 sporo-pollen assemblages can be compared with features of formations with sporo-pollen-containing assemblages, such as the Dabeigou Formation in the northern area of Hebei Province, the Lower Cretaceous Yixian Formation and the Jiufotang Formation in the western area of Liaoning Province, and the Lower Cretaceous Huoshiling Formation as well as the Shahezi Formation on the southeastern margin of the Songliao Basin. The determination of stratigraphic age of sporo-pollen-containing as-semblages is very important, which solves the stratigraphic division of column well and the correlation between stratigraphic column wells and regional strata. In addition, it provides detailed basic information for the study of regional stratigraphic paleontology.
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致谢: 本文涉及的所有孢粉样品由吉林大学古生物学与地层学研究中心张淑琴研究员分析鉴定,感谢中国地质调查局沈阳地质调查中心公繁浩高级工程师、李士超和孙求实工程师在野外工作中的大力协助。
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图版Ⅰ
1.Osmundacidites sp., XD381.5(即秀水地质井井深381.5m,以下同);2.Baculatisporites sp., XD381.5;3.Deltoidospora sp., XD381.5;4.Cicatricosisporites ludbrookiae Dettmann, XD381.5;5.Neoraistrickia sp., XD381.5;6.Cicatricosisporites ornatus Srivastava, XD381.5;7.Klukisporites sp., XD381.5;8.Densoisporites velatus Weyland et Krieger, XD391;9.Cicatricosisporites augustus Singh, XD381.5;10.Cicatricosisporites pseudoaurifer (Bolkh.)Li, XD445.3;11.Cicatricosisporites, XD438.1;12.Neoraistrickia sp., XD438.1;13.Dictyotriletes sp., XD438.1;14.Contignisporites sp., XD438.1;15.Cicatricosisporites brevilaesuratus Couper, XD445.3;16.Densoisporites velatus Weyland et Krieger, XD445.3;17.Biretisporites sp., XD381.5;18.Cicatricosisporites sp., XD685;19.Klukisporites sp., XD432;20.Cicatricosisporites ludbrookiae
图版Ⅰ.
图版Ⅱ
图版Ⅱ.
1.Pinuspollenites sp., XD447.5;2.Alisporites parvus De Jersey, XD381.5;3.Protopodocarpus sp., XD447.5;4.Chasmatosporites sp., XD447.5;5.Piceites sp., XD447.5;6.Pinuspollenites sp., XD381.5;7.Araucariacutes australisCookson, XD381.5;8.Pseudopicea sp., XD447.5;9.Protoconiferus flavus Bolkh., XD381.5;10.Podocarpidites paulus (Bolkh.) Xu et Zhang, XD391;11.Protopinus sp., XD447.5;12.Monosulcites sp., XD391;13.Piceites sp., XD391;14.Quadraeculina sp., XD432;15.Classopollis sp., XD381.5;16.Jiaohepollis flexuosus (Miao) Miao et Yu, XD381.5;17.Cerebropollenites sp., XD391;18.Alisporites parvus De Jersey, XD391;19.Pinuspollenites globosaccus Filatoff, XD391;20.Pinuspollenites elongates (Mal.)Pu et Wu, XD391;21.Cycadopitis sp., XD438.1
图版Ⅲ
图版Ⅲ.
1.Acanthotriletes varispinosus Pocock, XD62.1;2.Neoraistrickia gristhorpensis (Couper) Tralau, XD62.1;3.Undulatisporites sp., XD62.1;4.Osmundacidites sp., XD248;5.Osmundacidites sp., XD72;6.Triporoletes cretaceousYu, XD62.1;7.Triporoletes asper Srivastava XD62.1;8.Maculatisporites pachydermus Jia et Liu, XD62.1;9.Klukisporites sp., XD78;10.Densoisporites microrugulatus Brenner, XD72;11.Klukisporites pseudoreticulatus Couper XD100.9;12.Cyathidites sp., XD100.9;13.Maculatisporites sp., XD323.3;14.Cicatricosisporites ludbrookiae Dettmann, XD100.9;15.Cicatricosisporites jiaoheensis Li, XD62.1;16.Cicatricosisporites phymatochilus L, XD78;17.Cicatricosisporites jiaoheensis Li, XD72;18.Cicatricosisporites exilis (Mal.) Gao et Zhao, XD248;19.Cicatricosisporites ludbrookiae Dettmann, XD139.1;20.Cicatricosisporites minutaestriatus (Bolkh.) Pocock, XD323.3;21.Lygodioisporites erenensisJia et Liu, XD78;22.Appendicisporites sp., XD139.1;23.Converrucosisporites sp., XD248;24.Impardecispora montuosus (Doring) Jia, XD139.1
图版Ⅳ
图版Ⅳ.
1.Lycopodiumsporites sp., XD285;2.Densoisporites perinatus Couper, XD248;3~4.Dongbeispora sp., XD248;5.Cicatricosisporites australiensis (Cookson) Potonie, XD323.3;6.Concavissimisporites sp., XD248;7.Cyathidites sp., XD248;8.Cicatricosisporites exilis (Mal.) Gao et Zhao, XD339;9.Concavisporites sp., XD323.3;10.Cicatricosisporites nankingensis (Zhang)Zhang, XD323.3;11.Densoisporites velatus Weyland et Krieger, XD323.3;12.Impardecispora sp., XD323.3;13~14.Pilosisporites sp., XD248;15.Impardecispora tribotrys (Dettmann) Venkatachala, Kar et Raza, XD248;16.Klukisporites sp., XD248;17.Gleicheniidites sp., XD248;18.Cycadopitis sp., XD285;19.Araucariacutes australis Cookson, XD339;20.Piceaepollenites sp., XD323.3;21.Cedripites sp., XD75.5
图版Ⅴ
图版Ⅴ.
1.Walchiites ovalis Li, XD75.5;2.Psophosphaera sp., XD248;3.Protopinus brevisulcus Hua, XD75.5;4.Abietineaepollenites sp., XD339;5.Protoconiferus oviformis (Qian et Wang) Song, XD100.9;6.Jiaohepollis flexuosus (Miao) Miao et Yu, XD323.3;7.Podocarpidites paulus (Bolkh.) Xu et Zhang, XD339;8.Perinopollenites granulatus Hua et Liu, XD100.9;9~10.Chasmatosporites sp., XD339,XD323.3;11.Alisporites parvus De Jersey, XD100.9;12.Pseudowalchia landesii Pocock, XD75.5;13、.Piceites sp., XD248;14.Platysaccus sp., XD248;15.Alisporites parvus De Jersey, XD75.5;16.Piceaepollenites exilioides (Bolkh.) Xu et Zhang, XD75.5;17. Erlianpollis sp., XD75.5;18.Podocarpidites sp., XD75.5;19.Pinuspollenites divulgatus (Bolkh.) Qu, XD75.5
表 1 秀D1井孢粉谱及百分含量
Table 1 Statistics of average percentages of spore-pollen species from Xiu D1 well in Xiushui basin
% 孢粉名称 上部 中部 下部 苔藓植物 8.20 0.51 Triporoletes asper Srivastava 2.38 Triporoletes cretaceous Yu 5.77 0.19 Triporoletes reticulates (Pocock) Playford 0.05 0.32 蕨类植物孢子 52.56 14.65 1.72 Foraminisporis sp. 0.21 Biretisporites sp. 0.74 0.08 Cyathidites sp. 0.24 Deltoidospora sp. 1.90 0.95 0.56 Gleicheniidites sp. 0.19 Lygodiumsporites 0.77 Punctatisporites sp. 1.54 0.05 Toroisporis sp. 0.62 Undulatisporites sp. 0.42 0.05 Maculatisporites sp. 0.23 Maculatisporites pachydermus Jia et Liu 1.59 Osmundacidites sp. 14.03 5.84 0.58 Concavissimisporites sp. 0.25 Converrucosisporites sp. 0.21 0.14 Converrucosisporites dilutus Pu et Wu 0.28 Impardecispora sp. 0.26 Impardecispora tribotrys (Dettmann) Venkatachala, Kar et Raza 0.05 Impardecispora cavernosa (Ivanova) Pu et Wu 0.10 Impardecispora mino (Pocock) Venkatachala, Kar et Raza 0.28 Impardecispora montuosus (Doring) Jia 0.09 Lygodioisporites erenensis Jia et Liu 0.10 Verrucosisporites sp. 0.98 0.27 Lophotriletes sp. 0.20 0.05 Acanthotriletes varispinosus Pocock 0.99 Planisporites sp. 0.20 0.05 Pilosisporites sp. 1.27 Baculatisporites sp. 1.04 0.41 Neoraistrickia sp. 0.09 0.38 0.19 Neoraistrickia verrucata Xu et Zhang 0.05 Neoraistrickia gristhorpensis (Couper) Tralau 0.37 Foveotriletes sp. 0.34 0.05 Lycopodiumsporites sp. 0.66 0.14 Klukisporites sp. 2.64 0.21 0.19 Klukisporites pseudoreticulatus Couper 4.41 0.19 Cicatricosisporites 4.32 0.87 Cicatricosisporites augustus Singh 0.04 Cicatricosisporites ornatus Srivastava 0.04 Cicatricosisporites nankingensis(Zhang)Zhang 0.05 Cicatricosisporites jiaoheensis 0.31 裸子植物花粉 39.23 84.85 98.28 Protoconiferus sp. 4.27 3.88 6.20 Protopinus vastus Bolkh. 0.49 Protoconiferus flavus Bolkh. 0.38 8.22 Protoconiferus oviformis (Qian et Wang) Song 0.96 2.58 1.74 Protoconiferus phyllodes (Qian et Wang) Hua 1.09 Protopinus sp. 1.17 5.50 3.10 Protopinus brevisulcus Hua 0.49 0.87 0.58 Protopinus subluteus Bolkh 0.24 0.72 0.78 Protopinus vastus Bolkh 0.71 2.40 1.94 Protopinus latebrosa Bolkh 1.11 0.39 Paleoconiferae sp. 0.19 1.76 1.94 Paleoconiferae asaccatus Bolk 0.29 Pseudopinus sp. 0.05 0.22 Sulcatisporites 0.24 0.39 Protopodocarpus sp. 1.13 Pristinuspollenites sp. 0.77 2.03 Rugubivesiculites sp. 0.04 Pityosporites sp. 0.87 1.74 Parvisaccites sp. 0.23 0.30 0.97 Platysaccus sp. 0.16 0.27 0.78 Erlianpollis sp. 0.33 0.31 Araucariacutes sp. 0.85 1.38 0.58 Araucariacutes australis Cookson 0.29 1.70 3.10 Caytonipollenites sp. 0.05 Psophosphaera sp. 0.98 2.92 4.46 Perinopollenites sp. 0.13 0.39 Perinopollenites granulatus Hua et Liu 1.53 0.10 0.39 Spheripollenites sp. 0.05 Concentrisporites fragilis(Burger)Li et Hua 0.09 0.05 0.19 Callialasporites sp. 0.05 0.04 0.97 Classopollis sp. 0.05 0.63 2.33 Ovalipollis sp. 0.39 Cerebropollenites sp. 0.97 Podocarpidites sp. 1.91 1.92 3.72 Podocarpidites paulus (Bolkh.) Xu et Zhang 0.46 Cedripites sp. 0.65 0.25 2.91 Cedripites globulisaccatus Pu et Wu 0.04 Cedripites permirus (Bolkh.) Hua 0.04 Abietineaepollenites sp. 0.57 0.21 0.19 Pinuspollenites sp. 0.41 8.30 3.29 Pinuspollenites tricompositus (Bolkh.) Xu et Zhang 0.11 1.94 Pinuspollenites divulgatus (Bolkh.) Qu 2.00 0.58 6.78 Pinuspollenites insignis (Naumova) Pu et Wu 0.04 蕨类植物孢子 52.56 14.65 1.72 Cicatricosisporites minutaestriatus (Bolkh.) Pocock 1.02 0.05 Cicatricosisporites exilis (Mal.) Gao et Zhao 0.32 0.09 Cicatricosisporites pseudoaurifer (Bolkh.)Li 0.05 Cicatricosisporites brevilaesuratus Couper 0.05 Cicatricosisporites ludbrookiae Dettmann 1.67 0.23 Cicatricosisporites mandioccaniformis (Chlon.) Jia 0.10 Cicatricosisporites phymatochilus Li 0.39 Contignisporites sp. 0.10 Appendicisporites sp. 0.08 Appendicisporites ethmos Delcourt et Sprumont 0.04 Densoisporites sp. 0.66 3.79 Densoisporites microrugulatus Brenner 0.32 Densoisporites velatus Weyland et Krieger 5.43 0.47 Densoisporites perinatus Couper 0.42 Densoisporites scanicus Tralau 0.29 Hsuisporites sp. 0.05 0.14 Aequitriradites sp. 0.05 裸子植物花粉 39.23 84.85 98.28 Cycadopitis sp. 0.34 0.19 0.38 Monosulcites sp. 0.64 0.41 0.38 Chasmatosporites sp. 0.86 2.05 1.16 Alisporites parvus sp. 0.11 2.38 Alisporites parvus De Jersey 9.25 10.68 16.86 裸子植物花粉 39.23 84.85 98.28 Pinuspollenites elongates (Mal.)Pu et Wu 0.04 Pinuspollenites globosaccus Filatoff 0.04 0.78 Pinuspollenites alatiopllenites (Rouse) Liu 0.19 Piceites sp. 1.57 2.80 1.55 Piceites expositus Bolkh 0.86 0.74 Piceites enodis Bolkh 0.04 1.36 Piceites scaber Bolkh. 0.36 Pseudopicea sp. 1.57 5.44 3.88 Pseudopicea rotundiformis (Mal.) Bolkh. 0.29 Piceaepollenites sp. 2.30 6.34 11.05 Piceaepollenites exilioides (Bolkh.) Xu et Zhang 0.05 Piceaepollenites prolongatus (Maljavkina.) Li 0.05 Abiespollenites sp. 0.09 Klausipollenites sp. 1.36 Pseudowalchia sp. 0.13 Pseudowalchia landesii Pocock 0.48 Walchiites ovalis Li 0.05 Quadraeculina sp. 0.08 0.30 4.46 Quadraeculina minor (Pocock) Xu et Zhang, 1.74 Jiaohepollis sp. 0.51 0.18 Jiaohepollis flexuosus (Miao) Miao et Yu 0.05 0.12 Eucommiidites sp. 0.05 -
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