廊固凹陷古近系沙河街组古湖泊环境与有机质富集机制

刁帆; 金凤鸣; 郝芳; 孙冶华; 邹华耀; 王元杰; 张金峰; 操义军

doi:10.11781/sysydz201404479

廊固凹陷古近系沙河街组古湖泊环境与有机质富集机制

doi: 10.11781/sysydz201404479

1.
中国石油大学(北京) 地球科学学院, 北京 102249
2. 中国石油华北油田勘探开发研究院, 河北任丘 062552
3. 中国地质大学(武汉), 武汉 430074

基金项目: 中国石油天然气股份有限公司科技项目（2011D-0703）和国家科技重大专项“大型油气田及煤层气开发”（2011ZX05006）共同资助。

详细信息

作者简介:
刁帆（1984—），男，博士生，从事石油地质研究。E-mail: diaofan821@126.com。

中图分类号: TE121.3
计量
- 文章访问数: 802
- HTML全文浏览量: 57
- PDF下载量: 596
- 被引次数: 0
出版历程
- 收稿日期: 2014-01-03
- 修回日期: 2014-06-05
- 刊出日期: 2014-07-28

Palaeolake environment and organic matter enrichment mechanism of Paleogene Shahejie Formation in Langgu Sag

1.
College of Geosciences, China University of Petroleum, Beijing 102249, China
2. Exploration and Development Research Institute, PetroChina Huabei Oilfield Company, Renqiu, Hebei 062552, China
3. China University of Geosciences, Wuhan, Hubei 430074, China

摘要

摘要: 通过对廊固凹陷古近系沙四—沙三下亚段泥岩样品的元素地球化学、有机地球化学和同位素地球化学分析，结合湖泊的发育演化和古气候变化特征，探讨湖泊演化过程中水体盐度、氧化还原条件和生产力变化及其有机质富集机制。廊固凹陷在湖泊形成期（沙四段）湖盆构造活动弱，气候干热，湖泊水体盐度高，易形成盐跃层，使底层水处于稳定的缺氧条件，表层水体古生产力较低，有机质富集程度低；在湖泊鼎盛阶段（沙三下亚段）盆地强烈下陷，气候暖湿，湖泊水体为淡水，底层水体为弱还原环境，由于地表径流带来大量营养物质，表层水古生产力较高。湖相沉积物中有机质的富集程度受古湖泊不同演化阶段生产力和氧化还原条件的控制。沙四段有机质富集主要受底层水缺氧环境控制，沙三下亚段有机质富集与表层水的高生产力密切相关。
- 氧化还原条件 /
- 古生产力 /
- 有机质富集 /
- 古湖泊 /
- 廊固凹陷 /
- 渤海湾盆地
Abstract: According to the analyses of element geochemistry, organic geochemistry and isotope geochemistry of mudstone samples from the 4th member (Es⁴) and the lower subsection of the 3rd member (Es³) of the Shahejie Formation in the Langgu Sag, combined with the characteristics of lake evolution and climate change, it was discussed in this paper the changes of salinity, redox condition and productivity as well as the enrichment mechanisms of organic matter. During the formation stage (Es⁴), the lake was deposited in an inactive tectonic activity with arid climate, brackish water, stable water column stratification, water bottom anoxia and lower enrichment of organic matter. When the lake developed to the peak stage (the lower subsection of Es³), the basin subsided strongly with humid climate, fresh water and weak reducing environment in the bottom water. The productivity of surface water was high triggered by a great quantity of nutrients inflowed by direct runoff. The enrichment of organic matter in lacustrine sedimentation was controlled by the productivity and redox conditions during different lake evolution stages. In Es⁴, the enrichment of organic matter was mainly controlled by the anoxic environment in the bottom water, while in the lower subsection of Es³, it was closely related to the high productivity of surface water.
- redox condition /
- paleoproductivity /
- enrichment of organic matter /
- palaeolake /
- Langgu Sag /
- Bohai Bay Basin

HTML全文

参考文献(27)

[1]	张文朝,杨德相,陈彦均,等.冀中坳陷古近系沉积构造特征与油气分布规律[J].地质学报,2008,82(8):1103-1112. Zhang Wenchao,Yang Dexiang,Chen Yanjun,et al.Sedimentary structural characteristics and hydrocarbon distributed rules of Jizhong Depression[J].Acta Geologica Sinica,2008,82(8):1103-1112.
[2]	张文朝,崔周旗,韩春元,等.冀中坳陷老第三纪湖盆演化与油气[J].古地理学报,2001,3(1):45-54. Zhang Wenchao,Cui Zhouqi,Han Chunyuan,et al.Evolution of Palaeogene lacustrine basins and oil and gas potentials in the central Hebei depression[J].Journal of Palaeogeography,2001,3(1):45-54.
[3]	吴小洲.冀中廊固凹陷含油气系统[J].勘探家,2000,5(3):71-74. Wu Xiaozhou.Petroleum systems of Langgu sag[J].Petroleum Explorationist,2000,5(3):71-74.
[4]	蔡观强,郭锋,刘显太,等.沾化凹陷新近系沉积物的C、O、Sr、Nd同位素组成变化对古环境变迁的记录[J].地球化学,2007,36(6):569-577. Cai Guanqiang,Guo Feng,Liu Xiantai,et al.C,O,Sr and Nd isotopic records for Neogene sedimentary environmental changes of Zhanhua Sag[J].Geochimica,2007,36(6):569-577.
[5]	刘传联,赵泉鸿,汪品先.湖相碳酸盐氧碳同位素的相关性与生油古湖泊类型[J].地球化学,2001,30(4):363-367. Liu Chuanlian,Zhao Quanhong,Wang Pinxian.Correlation between carbon and oxygen isotopic ratios of lacustrine carbonates and types of oil-producing paleolakes[J].Geochimica,2001,30(4):363-367.
[6]	刘传联.东营凹陷沙河街组湖相碳酸盐岩碳氧同位素组分及其古湖泊学意义[J].沉积学报,1998,16(3):109-114. Liu Chuanlian.Carbon and oxygen isotopic compositions of lacustrine carbonates of the Shahejie Formation in the Dongying Depression and their paleolimnological significance[J].Acta Sedi-mentologica Sinica,1998,16(3):109-114.
[7]	赵莉莉,郑恒科,万维,等.南堡凹陷古近纪古湖泊学研究[J].特种油气藏,2013,20(5):57-61. Zhao Lili,Zheng Hengke,Wan Wei,et al.Research on Paleogene paleolimnology in Nanpu sag[J].Special Oil & Gas Reservoirs,2012,20(5):57-61.
[8]	Hao F,Zhou X H,Zhu Y M,et al.Lacustrine source rock deposition in response to co-evolution of environments and organisms controlled by tectonic subsidence and climate,Bohai Bay Basin,China[J].Organic Geochemistry,2011,42(4):323-339.
[9]	Harris N B,Freeman K H,Pancost R D,et al.The character and origin of lacustrine source rocks in the Lower Cretaceous synrift section,Congo Basin,west Africa[J].AAPG Bulletin,2004,88(8):1163-1184.
[10]	Gonalves F T T.Organic and isotope geochemistry of the Early Cretaceous rift sequence in the Camamu Basin,Brazil:paleolimnological inferences and source rock models[J].Organic Geochemistry,2002,33(1):67-80.
[11]	Tyson R V.Sequence-stratigraphical interpretation of organic facies variations in marine siliciclastic systems:general principles and application to the onshore Kimmeridge Clay Formation,UK[J].Geological Society,London,Special Publications,1996,103(1):75-96.
[12]	Talbot M R.A review of the palaeohydrological interpretation of carbon and oxygen isotopic ratios in primary lacustrine carbonates[J].Chemical Geology:Isotope Geoscience Section,1990,80(4):261-279.
[13]	郑仰帝,蔡进功.南黄海盆地碳酸盐岩碳氧同位素特征及意义[J].石油实验地质,2013,35(5):307-313. Zheng Yangdi,Cai Jingong.Characteristics of carbon and oxygen isotopes of carbonate rocks in South Yellow Sea Basin and their implication[J].Petroleum Geology & Experiment,2013,35(3):307-313.
[14]	邓南涛,张枝焕,任来义,等.鄂尔多斯盆地南部延长组油页岩地球化学特征及分布规律[J].石油实验地质.2013,35(4):432-437. Deng Nantao,Zhang Zhihuan,Ren Laiyi,et al.Geochemical characteristics and distribution rules of oil shale from Yanchang Formation,Southern Ordos Basin[J].Petroleum Geology & Experiment,2013,35(4):432-437.
[15]	陶明华,王开发,郑国光,等.冀中拗陷早第三纪孢粉组合及地质时代讨论[J].微体古生物学报,2001,18(3):274-292. Tao Minghua,Wang Kaifa,Zheng Guoguang,et al.Early Tertiary sporopollen assemblages from Jizhong Depression and their stratigraphic implication[J].Acta Micropalaeontologica Sinica,2001,18(3):274-292.
[16]	刘俊田,梁浩,侯全政,等.三塘湖盆地晚石炭世沉积环境中的古盐度恢复[J].新疆石油天然气,2011,7(1):1-5. Liu Juntian,Liang Hao,Hou Quanzheng,et al.Paleosalinity recovering of environment deposition in Late Carboniferous of Santanghu Basin[J].Xinjiang Oil & Gas,2011,7(1):1-5.
[17]	王益友,郭文莹,张国栋.几种地球化学标志在金湖凹陷阜宁群沉积环境中的应用[J].同济大学学报,1979(2):51-60. Wang Yiyou,Guo Wenying,Zhang Guodong.Application of some geochemical indicators in determining of sedimentary environment of the Funing Group,Jin-Hu Depression,Jiangsu Province[J].Journal of Tongji University,1979(2):51-60.
[18]	邓宏文,钱凯.沉积地球化学与环境分析[M].兰州:甘肃科学技术出版社,1993:22-25. Deng Hongwen,Qian Kai.Sedimentary geochemistry and paleoenvironmental analysis[M].Lanzhou:Gansu Science and Technology Press,1993:22-25.
[19]	Piper D Z.Seawater as the source of minor elements in black shales,phosphorites and other sedimentary rocks[J].Chemical Geology,1994,114(1):95-114.
[20]	刘传联,徐金鲤.生油古湖泊生产力的估算方法及应用实例[J].沉积学报,2002,20(1):144-150. Liu Chuanlian,Xu Jinli.Estimation method on productivity of oil producing lake and a case study[J].Acta Sedimentologica Sinica,2002,20(1):144-150.
[21]	Schindler D W.Biogeochemical evolution of phosphorus limitation in nutrient-enriched lakes of the Precambrian Shield[M].:Ann Arbor Science Publishers,1976.
[22]	Ivanochko T S,Pedersen T F.Determining the influences of Late Quaternary ventilation and productivity variations on Santa Barbara Basin sedimentary oxygenation:A multi-proxy approach[J].Quaternary Science Reviews,2004,23(3/4):467-480.
[23]	Crusius J,Calvert S,Pedersen T,et al.Rhenium and molybdenum enrichments in sediments as indicators of oxic,suboxic and sulfidic conditions of deposition[J].Earth and Planetary Science Letters,1996,145(1/4):65-78.
[24]	Algeo T J,Maynard J B.Trace-element behavior and redox facies in core shales of Upper Pennsylvanian Kansas-type cyclothems[J].Chemical Geology,2004,206(3):289-318.
[25]	Latimer J C,Filippelli G M.Eocene to Miocene terrigenous inputs and export production:Geochemical evidence from ODP Leg 177,Site 1090[J].Palaeogeography,Palaeoclimatology,Palaeoecology,2002,182(3/4):151-164.
[26]	Dean W E.Carbonate minerals and organic matter in sediments of modern north temperate hard-water lakes//Ethridge F,Flores R.Recent and ancient nonmarine depositional environments:Models for Exploration.:Society of Economic Paleontologists and Mineralogists,1981.
[27]	Bertrand P,Lallier-Verges E,Boussafir M.Enhancement of accumulation and anoxic degradation of organic matter controlled by cyclic productivity:a model[J].Organic Geochemistry,1994,22(3/5):511-520.