苏北盆地高邮凹陷古近系戴南组沉积相及沉积演化
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摘要
根据岩心、电测曲线、录井以及地震资料,对苏北盆地高邮凹陷古近系戴南组的沉积相类型、展布特征及其演化规律进行了系统的研究。结果表明,戴南组发育扇三角洲、三角洲、近岸水下扇和湖泊四种沉积相类型,扇三角洲、近岸水下扇分布在凹陷南部陡坡,三角洲分布在北部缓坡,湖泊分布在凹陷的中心及扇三角洲、三角洲、近岸水下扇的侧翼,从凹陷边缘到中心,沉积相由扇三角洲、三角洲、近岸水下扇沉积逐渐变为滨浅湖、半深湖沉积,整体呈南北分异、隆凹成带的格局。戴南组的沉积演化可划分为戴南组一段和戴南组二段两个时期,不同时期的沉积特征、沉积相展布表现各异,总体表现出水体由浅变深,再变浅,沉积范围逐渐扩大,扇三角洲、三角洲、近岸水下扇先退积,后进积的特点。
Based on a comprehensive analysis of core,logging data and seismic survey,the sedimentary facies types of Paleogene Dainan Formation,Gaoyou Sag,Subei Basin were studied systematically,as well as their distribution and evolution.The research showed that fan delta,delta,nearshore subaqueous fan and lacustrine facies deposited in the formation,of which fan delta and nearshore subaqueous fan located along the steep south border,delta in the gently north slope and lacustrine in the central zone of the deep area and the flank of the fan delta,delta and nearshore subaqueous fan.From the margin to the depocenter of the sag,the sedimentary environments gradually changed from fan delta,delta or nearshore subaqueous fan to shore-shallow sediments and middle depth lacustrine.The palaeogeog-raphy of the Dainan Formation displayed a clear south-north zonation.The sedimentary envolution of Dainan Formation was divided into two stages,in which the sedimentary characteristics and the sedimentary facies distribution were correspondingly different.As a whole,the depth of water changed from shallow to deep,and then to shallow,sedimentary area gradually enlarged,and fan delta,delta and nearshore subaqueous fan frist retrogradated,then progradated.
Based on a comprehensive analysis of core,logging data and seismic survey,the sedimentary facies types of Paleogene Dainan Formation,Gaoyou Sag,Subei Basin were studied systematically,as well as their distribution and evolution.The research showed that fan delta,delta,nearshore subaqueous fan and lacustrine facies deposited in the formation,of which fan delta and nearshore subaqueous fan located along the steep south border,delta in the gently north slope and lacustrine in the central zone of the deep area and the flank of the fan delta,delta and nearshore subaqueous fan.From the margin to the depocenter of the sag,the sedimentary environments gradually changed from fan delta,delta or nearshore subaqueous fan to shore-shallow sediments and middle depth lacustrine.The palaeogeog-raphy of the Dainan Formation displayed a clear south-north zonation.The sedimentary envolution of Dainan Formation was divided into two stages,in which the sedimentary characteristics and the sedimentary facies distribution were correspondingly different.As a whole,the depth of water changed from shallow to deep,and then to shallow,sedimentary area gradually enlarged,and fan delta,delta and nearshore subaqueous fan frist retrogradated,then progradated.
引文
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4陆红梅.苏北盆地高邮凹陷陆相层序地层研究[J].断块油气田,2000,7(1):18-22[Lu Hongmei.Continental sequence stratigraphystudy of Gaoyou Sag in Subei Basin[J].Fault-block Oil&Gas Field,2000,7(1),18-22]
5张喜林,朱筱敏,钟大康,等.苏北盆地高邮凹陷第三系—上白垩统层序地层格架特征[J].沉积学报,2004,22(3):393-399[Zhang Xilin,Zhu Xiaomin,Zhong Dakang.et al.The character ofsequence framework of Tertiary and Upper Cretaceous in Gaoyou Sag,Subei Basin[J].Acta Sedimentologica Sinica,2004,22(3):393-399]
6张喜林,朱筱敏,钟大康,等.苏北盆地高邮凹陷古近系戴南组沉积相及其对隐蔽油气藏的控制[J].古地理学报,2005,7(2):207-218[Zhang Xilin,Zhu Xiaomin,Zhong Dakang,et al.Sedimen-tary facies and its controlling on subtle oil and gas reservoirs of theDainan Formation of Paleogene in Gaoyou Sag,Subei Basin[J].Jour-nal of Palaeogeography,2005,7(2):207-218]
7庞金梅,曹冰.高邮凹陷戴南组隐蔽油气藏的成因及勘探实践[J].海洋石油,2005,25(3):7-13[Pang Jinmei,Cao Bing.Originand exploration practice of E2 d concealed oil and gas accumulation inGaoyou Sag[J].Offshore Oil,2005,25(3):7-13]
8陈泽润,吴建耀.高邮凹陷西部戴南组早期沉积特征与油气关系[J].小型油气藏,2006,11(2):11-15[Chen Zerun,Wu Jianyao.Early deposition feature of Dainan Formation in the west of Gaoyou sagand its relation to oil and gas[J].Small Hydrocarbon Reservoirs,2006,11(2):11-15]
9张小兵,郑荣才,张哨楠.高邮凹陷马家嘴—联盟庄地区戴南组构造—沉积体系[J].大庆石油地质与开发,2007,26(1):13-17[Zhang Xiaobing,Zheng Rongcai,Zhang Shaonan.The tectonic-sedi-mentary system of the Dainan Formation in Majiazui-Lianmenzhuang re-gion,Gaoyou Sag[J].Petroleum Geology&Oilfield Development inDaqing,2007,26(1):13-17]
10夏连军,吴向阳,毛树礼,等.高邮凹陷邵伯地区近岸水下扇的地震预测[J].勘探地球物理进展,2008,31(3):212-218[XiaLianjun,Wu Xiangyang,Mao Shuli,et al.Seismic prediction ofnearshore subaqueous fan in Shaobo,Gaoyou Depression[J].Pro-gress in Exploration Geophysics.2008,31(3):212-218]
11 Miall A D.A review of the braided river depositional environment[J].Earth Science Reviews,1977,13:1-62
12 Miall A D.Lithofacies types and vertical profile models in braided riv-er deposits:a summary[M]∥Miall A D,ed.Fluvial Sedimentology.Canadian Society of Petroleum Geology Memoir 5,1978:597-604
13 Falk P D,Dorsey R J.Rapid development of gravelly high-densityturbidity currents in marine Gilbert-type fan deltas,Loreto Basin,Ba-ja California Sur,Mexico[J].Sedimentology,1998,45:331-349
14 Longhitano S G.Sedimentary facies and sequence stratigraphy ofcoarse-grained Gilbert-type deltas within the Pliocene thrust-top Poten-za Basin(Southern Apennines,Italy)[J].Sedimentary Geology,2008,210:87-110
15林春明,宋宁,牟荣,等.江苏盐阜拗陷晚白垩世浦口组沉积相与沉积演化[J].沉积学报,2003,19(4):553-559[Lin Chun-ming,Song Ning,Mu Rong,et al.Sedimentary facies and evolutionof Late Cretaceous in the Yanfu Depression from Jiangsu Province[J].Acta Sedimentologica Sinica,2003,19(4):553-559]
16楼章华,卢庆梅,蔡希源,等.湖平面升降对浅水三角洲前缘砂体形态的影响[J].沉积学报,1998,16(4):27-31[Lou Zhang-hua,Lu Qingmei,Cai Xiyuan,et al.Influence of lake level fluctua-tion on sandbody shapes at shallow-water delta front[J].Acta Sedim-entologica Sinica,1998,16(4):27-31]
17夏文臣,雷建喜,王超勇.鄂尔多斯盆地南部延安组水下分流河道型湖泊三角洲体系的沉积构成[J].地球科学,1991,16(2):219-228[Xia Wenchen,Lei Jianxi,Wang Chaoyong.The deposition-al architecture of the lacustrine deltaic system with subaqueous distrib-utary channel of Yan’an Formation in Southern Ordos Basin[J].Ac-ta Geoscientica Sinica,1991,16(2):219-228]
18武富礼,李文厚,李玉宏,等.鄂尔多斯盆地上三叠统延长组三角洲沉积及演化[J].古地理学报,2004,6(3):307-315[WuFuli1,Li Wenhou,Li Yuhong,et al.Delta sediments and evolutionof the Yanchang Formation of Upper Triassic in Ordos Basin[J].Journal of Palaeogeography,2004,6(3):307-315]
19楼章华,兰翔,卢庆梅,等.地形、气候与湖面波动对浅水三角洲沉积环境的控制作用[J].地质学报,1999,73(1):83-92[LouZhanghua,Lan Xiang,Lu Qingmei,et al.Controls of the topogra-phy,climate and lake level fluctuation on the depositional environ-ment of a shallow-water delta[J].Acta Geologica Sinica,1999,73(1):83-92]
20 Walker R G.Deep-water sandstone facies and ancient submarinefans:Models for exploration for stratigraphic traps[J].AAPG Bulle-tin,1978,62:932-966
21张萌,田景春.“近岸水下扇”的命名、特征及其储集性[J].岩相古地理,1999,19(4):42-52[Zhang Meng,Tiang Jingchun.Thenomenclature,sedimentary characteristics and reservoir potential ofnearshore subaqueous fans[J].Lithofacies and Palaeogeography,1999,19(4):42-52]
22林春明,李广月,卓弘春,等.杭州湾地区晚第四纪下切河谷充填物沉积相与生物气勘探[J].古地理学报,2005,7(1):12-24[Lin Chunming,Li Guangyue,Zhuo Hongchun,et al.Sedimentaryfacies of incised filling of the Late Quaternary in Hangzhou Bay areaand shallow biogenic gas exploration[J].Journal of Palaeogeography,2005,7(1):12-24]
23刘招君.湖泊水下扇沉积特征及影响因素———以伊通盆地莫里青断裂双阳组为例[J].沉积学报,2003,21(1):148-154[LiuZhaojun.Subaqueous fan sedimentary characteristics and influencefactors:A case study of Shuangyang Formation in Moliqing fault sub-sidence of Yitong Basin[J].Acta Sedimentologica Sinica,2003,21(1):148-154]
2曾萍.G78区域大剖面综合解释与苏北盆地构造特征[J].石油天然气学报,2007,29(3):82-86[Zeng Ping.Synthetic interpretationof the G78 profile and tectonic characteristics of Subei Basin[J].Jour-nal of Oil and Gas Technology,2007,29(3):82-86]
3邱旭明,刘玉瑞,傅强.苏北盆地上白垩统—第三系层序地层与沉积演化[M].北京:地质出版社,2006:1-154[Qiu Xuming,LiuYurui,Fu Qiang.Sequence Stratigraphy and Sedimentary Evolution ofUpper Cretaceous-Tertiary in Northern Jiangsu Basin[M].Beijing:Geological Publishing House,2006:1-154]
4陆红梅.苏北盆地高邮凹陷陆相层序地层研究[J].断块油气田,2000,7(1):18-22[Lu Hongmei.Continental sequence stratigraphystudy of Gaoyou Sag in Subei Basin[J].Fault-block Oil&Gas Field,2000,7(1),18-22]
5张喜林,朱筱敏,钟大康,等.苏北盆地高邮凹陷第三系—上白垩统层序地层格架特征[J].沉积学报,2004,22(3):393-399[Zhang Xilin,Zhu Xiaomin,Zhong Dakang.et al.The character ofsequence framework of Tertiary and Upper Cretaceous in Gaoyou Sag,Subei Basin[J].Acta Sedimentologica Sinica,2004,22(3):393-399]
6张喜林,朱筱敏,钟大康,等.苏北盆地高邮凹陷古近系戴南组沉积相及其对隐蔽油气藏的控制[J].古地理学报,2005,7(2):207-218[Zhang Xilin,Zhu Xiaomin,Zhong Dakang,et al.Sedimen-tary facies and its controlling on subtle oil and gas reservoirs of theDainan Formation of Paleogene in Gaoyou Sag,Subei Basin[J].Jour-nal of Palaeogeography,2005,7(2):207-218]
7庞金梅,曹冰.高邮凹陷戴南组隐蔽油气藏的成因及勘探实践[J].海洋石油,2005,25(3):7-13[Pang Jinmei,Cao Bing.Originand exploration practice of E2 d concealed oil and gas accumulation inGaoyou Sag[J].Offshore Oil,2005,25(3):7-13]
8陈泽润,吴建耀.高邮凹陷西部戴南组早期沉积特征与油气关系[J].小型油气藏,2006,11(2):11-15[Chen Zerun,Wu Jianyao.Early deposition feature of Dainan Formation in the west of Gaoyou sagand its relation to oil and gas[J].Small Hydrocarbon Reservoirs,2006,11(2):11-15]
9张小兵,郑荣才,张哨楠.高邮凹陷马家嘴—联盟庄地区戴南组构造—沉积体系[J].大庆石油地质与开发,2007,26(1):13-17[Zhang Xiaobing,Zheng Rongcai,Zhang Shaonan.The tectonic-sedi-mentary system of the Dainan Formation in Majiazui-Lianmenzhuang re-gion,Gaoyou Sag[J].Petroleum Geology&Oilfield Development inDaqing,2007,26(1):13-17]
10夏连军,吴向阳,毛树礼,等.高邮凹陷邵伯地区近岸水下扇的地震预测[J].勘探地球物理进展,2008,31(3):212-218[XiaLianjun,Wu Xiangyang,Mao Shuli,et al.Seismic prediction ofnearshore subaqueous fan in Shaobo,Gaoyou Depression[J].Pro-gress in Exploration Geophysics.2008,31(3):212-218]
11 Miall A D.A review of the braided river depositional environment[J].Earth Science Reviews,1977,13:1-62
12 Miall A D.Lithofacies types and vertical profile models in braided riv-er deposits:a summary[M]∥Miall A D,ed.Fluvial Sedimentology.Canadian Society of Petroleum Geology Memoir 5,1978:597-604
13 Falk P D,Dorsey R J.Rapid development of gravelly high-densityturbidity currents in marine Gilbert-type fan deltas,Loreto Basin,Ba-ja California Sur,Mexico[J].Sedimentology,1998,45:331-349
14 Longhitano S G.Sedimentary facies and sequence stratigraphy ofcoarse-grained Gilbert-type deltas within the Pliocene thrust-top Poten-za Basin(Southern Apennines,Italy)[J].Sedimentary Geology,2008,210:87-110
15林春明,宋宁,牟荣,等.江苏盐阜拗陷晚白垩世浦口组沉积相与沉积演化[J].沉积学报,2003,19(4):553-559[Lin Chun-ming,Song Ning,Mu Rong,et al.Sedimentary facies and evolutionof Late Cretaceous in the Yanfu Depression from Jiangsu Province[J].Acta Sedimentologica Sinica,2003,19(4):553-559]
16楼章华,卢庆梅,蔡希源,等.湖平面升降对浅水三角洲前缘砂体形态的影响[J].沉积学报,1998,16(4):27-31[Lou Zhang-hua,Lu Qingmei,Cai Xiyuan,et al.Influence of lake level fluctua-tion on sandbody shapes at shallow-water delta front[J].Acta Sedim-entologica Sinica,1998,16(4):27-31]
17夏文臣,雷建喜,王超勇.鄂尔多斯盆地南部延安组水下分流河道型湖泊三角洲体系的沉积构成[J].地球科学,1991,16(2):219-228[Xia Wenchen,Lei Jianxi,Wang Chaoyong.The deposition-al architecture of the lacustrine deltaic system with subaqueous distrib-utary channel of Yan’an Formation in Southern Ordos Basin[J].Ac-ta Geoscientica Sinica,1991,16(2):219-228]
18武富礼,李文厚,李玉宏,等.鄂尔多斯盆地上三叠统延长组三角洲沉积及演化[J].古地理学报,2004,6(3):307-315[WuFuli1,Li Wenhou,Li Yuhong,et al.Delta sediments and evolutionof the Yanchang Formation of Upper Triassic in Ordos Basin[J].Journal of Palaeogeography,2004,6(3):307-315]
19楼章华,兰翔,卢庆梅,等.地形、气候与湖面波动对浅水三角洲沉积环境的控制作用[J].地质学报,1999,73(1):83-92[LouZhanghua,Lan Xiang,Lu Qingmei,et al.Controls of the topogra-phy,climate and lake level fluctuation on the depositional environ-ment of a shallow-water delta[J].Acta Geologica Sinica,1999,73(1):83-92]
20 Walker R G.Deep-water sandstone facies and ancient submarinefans:Models for exploration for stratigraphic traps[J].AAPG Bulle-tin,1978,62:932-966
21张萌,田景春.“近岸水下扇”的命名、特征及其储集性[J].岩相古地理,1999,19(4):42-52[Zhang Meng,Tiang Jingchun.Thenomenclature,sedimentary characteristics and reservoir potential ofnearshore subaqueous fans[J].Lithofacies and Palaeogeography,1999,19(4):42-52]
22林春明,李广月,卓弘春,等.杭州湾地区晚第四纪下切河谷充填物沉积相与生物气勘探[J].古地理学报,2005,7(1):12-24[Lin Chunming,Li Guangyue,Zhuo Hongchun,et al.Sedimentaryfacies of incised filling of the Late Quaternary in Hangzhou Bay areaand shallow biogenic gas exploration[J].Journal of Palaeogeography,2005,7(1):12-24]
23刘招君.湖泊水下扇沉积特征及影响因素———以伊通盆地莫里青断裂双阳组为例[J].沉积学报,2003,21(1):148-154[LiuZhaojun.Subaqueous fan sedimentary characteristics and influencefactors:A case study of Shuangyang Formation in Moliqing fault sub-sidence of Yitong Basin[J].Acta Sedimentologica Sinica,2003,21(1):148-154]
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