YU Xuening, ZHAN Qing, WANG Zhanghua. SEDIMENTARY STRUCTURES AND GRAIN SIZE PATTERNS OF THE GEOMORPHIC UNITS IN THE YANGTZE RIVER MOUTH[J]. Marine Geology & Quaternary Geology, 2016, 36(4): 1-11. DOI: 10.16562/j.cnki.0256-1492.2016.04.001
Citation: YU Xuening, ZHAN Qing, WANG Zhanghua. SEDIMENTARY STRUCTURES AND GRAIN SIZE PATTERNS OF THE GEOMORPHIC UNITS IN THE YANGTZE RIVER MOUTH[J]. Marine Geology & Quaternary Geology, 2016, 36(4): 1-11. DOI: 10.16562/j.cnki.0256-1492.2016.04.001

SEDIMENTARY STRUCTURES AND GRAIN SIZE PATTERNS OF THE GEOMORPHIC UNITS IN THE YANGTZE RIVER MOUTH

More Information
  • Received Date: December 20, 2015
  • Revised Date: March 27, 2016
  • The sedimentary structures and the grain size distribution patterns of the top 1 m of 165 short cores are described and summarized in this paper in accordance with their geomorphic units in the Yangtze River mouth, and applied for identification of depositional facies. Results show that the traction sandy deposits dominated in channel bars, upper-estuary ebb channels and mouth bars characterized by the frequency curves of grain size peaked at 63~125 μm and/or 125~250 μm with the 125~250 μm-peaked curve increasing seaward. Remaining geomorphic units are mainly dominated by muddy sediments with typical features as follows:1) sand-mud couplets generally occur in tidal flat deposits rich in sandy lamina. 2) The frequency curves of grain size have a main peak at<4 μm in the inner-mouth flood channel, while in the flood channel offshore grain size composition peaks at 31-63 μm with increasing sandy laminas. 3) Laminations, predominantly very thin laminations are popular in the lower-estuary ebb channel. 4) Sediments from the Nanhui Shoal are characterized by double peaks in frequency curves with the highest average value of the median in the muddy area. Some samples appear in QR region in the C-M plot. 5) The sediments deposited in the compound channel offshore are significantly finer than that in other units of the delta front, which reflect the weak hydrodynamic near the stagnation point. 6) The prodelta mud is rather homogeneous, which consists of the finest sediment at the Yangtze River mouth.
  • [1]
    董永发.长江河口及其水下三角洲的沉积特征和沉积环境[J].华东师范大学学报:自然科学版,1989(2):78-85.[DONG Yongfa. Sedimentary characteristics and environment of the Changjiang Estuary and its submerged delta[J]. Journal of East China Normal University (Natural Science),1989

    (2):78-85.]
    [2]
    陈沈良,严肃庄,李玉中.长江口及其邻近海域表层沉积物分布特征[J].长江流域资源与环境,2009,18(2):152-156.

    [CHEN Shenliang, YAN Suzhuang, LI Yuzhong. Characteristics of surface sediment distribution in the Yangtze Estuary and its adjacent waters[J]. Resources and Environment in the Yangtze Basin, 2009,18(2):152-156.]
    [3]
    范代读,李从先,陈美发,等.长江三角洲泥质潮坪沉积间断的定量分析[J].海洋地质与第四纪地质,2001,21(4):1-6.

    [FAN Daidu, LI Congxian, CHEN Meifa, et al. Quantitative analyses on hiatus of the mudflat deposits in the Yangtze river delta[J]. Marine Geology and Quaternary Geology,2001,21(4):1-6.]
    [4]
    赵亚楠,王张华,吴绪旭,等.长江口现代潮滩沉积物粒度特征及其在沉积相识别中的应用[J].古地理学报,2015,17(3):405-416.

    [ZHAO Ya'nan, WANG Zhanghua, WU Xuxu, et al. Grain size distribution of modern tidal flat sediments at the Yangtze River mouth and its application to identification of sedimentary facies[J]. Journal of Palaeogeography, 2015,17(3):405-416.]
    [5]
    许世远,王靖泰,李萍.论长江三角洲发育的阶段性[C]//海岸河口区动力、地貌、沉积过程论文集.中国海洋湖沼学会编,北京:科学出版社.1984:20-34.[XU Shiyuan, WANG Jingtai, LI Ping. The discussion of evolution stages at Yangtze Delta[C]//Dynamics, Geomorphology and Sedimentary processes at estuary and coast.Science Press, 1984:20

    -34.]
    [6]
    Jiyu Chen, Daoji Li, Banglin Chen, et al. The processes of dynamic sedimentation in the Changjing Estuary[J]. Journal of Sea Research, 1999, 41:129-140.
    [7]
    许世远,黄仰松,范安康.上海市地貌类型与地貌分区[J].华东师范大学学报:自然科学版,1986,(4):75-82.[XU Shiyuan, HUANG Yangsong, FAN Ankang. An analysis on geomorphology types and zonation of the Shanghai municipality area[J]. Journal of East China Normal University (Natural Science), 1986

    ,(4):75-82.]
    [8]
    刘高峰,沈焕庭,吴加学,等.河口涨落潮槽水动力特征及河槽类型判定[J].海洋学报,2005,27(5):151-156.

    [LIU Gaofeng, SHEN Huangting, WU Jiaxue, et al. The study of hydrodynamic characteristics of flood and ebb channels and channel type judgment[J].Acta Oceanologica Sinica, 2005, 27(5):151-156.]
    [9]
    沈焕庭,潘定安.长江河口潮流特性及其对河槽演变的影响[J].华东师范大学学报:自然科学版,1979,(1):131-144.[SHEN Huanting, PAN Ding'an. The characteristics of tidal current and its effects on the channel changes of the Yangtze Estuary[J]. Journal of East China Normal University (Natural Science),1979

    ,(1):131-144.]
    [10]
    杨许侯,金成法,马道华.长江口南港水道潮流特征分析[J].海洋通报,1999,18(1):2-11.

    [YANG Xuhou, JIN Chengfa, MA Daohua. The characteristics of tidal currents in the Nangang canal of the Changjiang River estuary[J]. Marine Science Bulletin, 1999,18(1):2-11.]
    [11]
    武小勇.长江口北港河势演变分析[D].上海:华东师范大学,2005.[WU Xiaoyong. Analysis on evolution process of North Channel of the Changjiang Estuary[D]. East China Normal University, 2005.]
    [12]
    周开胜,孟翊,刘苍字,等.长江口北支沉积特征及北支河道演变[J].泥沙研究,2009,(6):65-73.[ZHOU Kaisheng, MENG Yi, LIU Cangzi, et al. Sedimentation characteristic and channel evolvement in the North Branch of the Yangtze River Estuary[J]. Journal of Sediment Research, 2009

    , (6), 65-73.]
    [13]
    庄克琳.长江水下三角洲的沉积特征[D].青岛:中国海洋大学, 2005.[ZHUANG Kelin. Sedimentation Features in the Subaqueous Yangtze Delta[D]. Ocean University of China, 2005.]
    [14]
    沈焕庭,潘定安.长江口最大浑浊带[M].北京:海洋出版社, 2001:1-38.[SHEN Huanting, PAN Ding'an. Turbidity Maximum in the Changjiang Estuary[M]. China Ocean Press, 2001:1

    -38]
    [15]
    王颖.中国区域海洋学-海洋地貌学[M].北京:海洋出版社,2012:349-358.[WANG Ying. Regional Oceanography of China Seas:Marine Geomorphology[M]. Beijing:China Ocean Press, 2012:349

    -358.]
    [16]
    Reading H G. Sedimentary Environments:Processes, Facies and Stratigraphy[M].UK:Blackwell Science,1996.
    [17]
    Shepard F P. Nomenclature based on sand-silt-clay ratios[J]. Journal of Sedimentary Research, 1954, 24(3):151-158.
    [18]
    姜在兴.沉积学[M].北京:石油工业出版社,2003:83-87.[JIANG Zaixing. Sedimentology[M]. Beijing:Petroleum Industry Press, 2003, 83

    -87.]
    [19]
    陈吉余.长江口拦门沙及水下三角洲的动力沉积和演变[J].长江流域资源与环境,1995,11(4):348-355.

    [CHEN Jiyu. Sediment dynamics and evolution of the mouthbar and subaqueous delta in the Yangtze Estuary[J]. Resources and Environment in the Yangtze Basin, 1995, 11(4):348-355.]
    [20]
    路川腾.长江口潮波传播[D].南京:南京水利研究院,2009.[LU Chuanteng. The tidal wave dissemination in the Yangtze estuary[D]. Nanjing Hydraulic Research Institute, 2009.]
    [21]
    黄广,陈沈良,胡静.南汇东滩沉积物粒度特征及其与水动力的关系[J].海洋湖沼通报, 2008, 1(1):32-38.

    [HUANG Guang, CHEN Shenliang, HU Jing.Sediment characteristics and its relationship to hydrodynamic on Nanhui subfluvial flat[J]. Transactions of Oceanology and Limnology,2008,1(1):32-38.]
    [22]
    Simmons H B, Broun F R. Salinity effect on hydraulics and shoaling in estuary[R]. IAHR 13th Congress, 1969, Vol. Ⅲ:311-326.
    [23]
    时伟荣,李九发.长江河口南北槽输沙机制及浑浊带发育分析[J].海洋通报,1993,12(4):69-76.

    [SHI Weirong, LI Jiufa. Mud transport calculation in Yangtze Estuary and analyses of formation of turbidity maximum[J].Marine Science Bulletin,1993,12(4):69-76.]
    [24]
    黄李冰,李义天,黄剑桥,等.径潮动力对长江河口滞流点的影响[J].水科学进展,2015,26(4):573-578.

    [HUANG Libing, LI Yitian, HUANG Jianqiao, et al. Influence of change in river discharge and tide on stagnation point in the Yangtze River estuary[J]. Advances in Water Science, 2015,26(4):573-578.]
    [25]
    沈焕庭,郭成涛,朱慧芳,等.长江口最大浑浊带的变化规律及成因探讨[C]//海岸河口区动力、地貌、沉积过程论文集.中国海洋湖沼学会编,北京:科学出版社,1984:76-89.[SHEN Huanting, GUO Chengtao, ZHU Huifang, et al. The discussion on variation and causes in the turbidity maximum zone at Yangtze River Estuary[C]//Dynamics, Geomorphology and Sedimentary processes at estuary and coast.Science Press, 1984:76

    -89.]
  • Cited by

    Periodical cited type(2)

    1. 李凯. 水域工程高精度三维地震反射勘探应用研究Research on the application of high resolution 3D seismic reflection exploration in offshore engineering. 地球物理学进展. 2024(04): 1670-1686 .
    2. 胡雪莹,龚锐,高顺莉,张建明,刘玉柱,耿建华. 南黄海中部隆起带折射波层析成像. 地球物理学进展. 2023(02): 803-813 .

    Other cited types(0)

Catalog

    Article views (2273) PDF downloads (34) Cited by(2)

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return