Grain-size distribution of surface sediments in Sanggou Bay and its environmental significance
-
摘要:
根据桑沟湾和邻近海域201个表层沉积物样品粒度测试结果，分析了砾、砂、粉砂和黏土等各粒级组分含量分布特征，划分了沉积物类型，探讨了沉积环境。结果表明，沉积物组分中以粉砂粒级组分为主，砾和砂分布相对集中。海域表层沉积物类型共有12类，含砾沉积物类型7类，不含砾沉积物类型5类，其中砂质粉砂与粉砂分布最广。桑沟湾及邻近海域沉积物分布主要受控于泥沙来源、地形地貌及潮流、波浪、沿岸流等沉积动力条件的共同作用。桑沟湾西部近岸海域的泥沙为近源沉积，颗粒较粗，向海扩散有限；桑沟湾外沉积物颗粒由东向西变细，与黄海西部沿岸流携带的黄河源泥沙向西扩散有关；桑沟湾内沉积物颗粒较细，水动力较弱；桑沟湾东北部和东南部海底的脊状凸起区域，含砾沉积物为当地近源碎屑沉积，受海流冲刷的影响，细颗粒碎屑难以沉积。
Abstract:The characteristics of grain size distribution on 202 surface sediment samples in Sanggou Bay and adjacent area was analyzed, from which the distribution patterns of gravel, sand, silt and clay were specified, the sediment types were divided, and the sedimentary environments were discussed. Results show that the sediment composition is mainly silt, and the distribution of gravel and sand content is relatively concentrated, and there are 14 types of surface sediments in Sanggou Bay and adjacent area, including 8 types with gravels and 6 types no gravels, and sandy silt and silt are most widely distributed. The distribution of sediments in Sanggou Bay and adjacent area is mainly under the control of sediment supply, landforms, tidal currents, waves, and coastal currents. The sediments near shore in the western of Sanggou Bay is coarse and near the source area with limited seaward dispersion. The sediment particles outside Sanggou Bay become finer from east to west, which is related to the westward diffusion of sediment from the source of the Yellow River carried by the coastal current along coast of the western Yellow Sea. The sediment particles of inner Sanggou Bay are fine and the hydrodynamic force is weak. The gravel-bearing sediments in the seafloor ridge area of northeast and southeast of the Sanggou Bay are local near-source clastic sediments, and the fine particles are difficult to deposit because of scouring by the ocean currents.
-
Key words:
- Sanggou Bay /
- surface sediment /
- grain size component /
- sediment type /
- sedimentary environment
-
-
表 1 各粒级的粒度参数统计表
Table 1. Statistics of particle size parameters at each grain-size level
粒级代表值/Φ 平均粒径/Φ 标准偏差 累计频率 −3.75 2.00 8.86 2.00 −3.25 0.23 1.05 2.24 −2.75 0.36 1.99 2.60 −2.25 0.30 1.53 2.90 −1.75 0.33 1.58 3.23 −1.25 0.28 1.19 3.51 −0.75 0.27 1.04 3.79 −0.25 0.29 0.99 4.07 0.25 0.35 1.39 4.43 0.75 0.55 1.89 4.98 1.25 0.82 2.94 5.80 1.75 0.98 3.38 6.78 2.25 1.27 3.93 8.05 2.75 1.72 4.77 9.77 3.25 3.38 4.32 13.15 3.75 6.94 4.53 20.09 4.25 11.42 5.00 31.51 4.75 12.92 4.93 44.43 5.25 11.32 3.88 55.75 5.75 8.41 3.07 64.16 6.25 6.18 2.73 70.34 6.75 5.14 2.51 75.48 7.25 4.72 2.30 80.20 7.75 4.27 2.03 84.47 8.25 3.65 1.70 88.12 8.75 2.89 1.31 91.01 9.25 2.32 0.99 93.33 9.75 2.11 0.84 95.44 10.25 4.56 1.78 100.00 
下载: 导出CSV
-
[1] 乔淑卿,石学法,王国庆,等. 渤海底质沉积物粒度特征及输运趋势探讨[J]. 海洋学报,2010,32(4):139-147.
[2] 王中波,杨守业,张志珣,等. 东海陆架中北部沉积物粒度特征及其沉积环境[J]. 海洋与湖沼,2012,43(6):1039-1049.
[3] 王中波,李日辉,张志珣,等. 渤海及邻近海区表层沉积物粒度组成及沉积分区[J]. 海洋地质与第四纪地质,2016,36(6):101-109.
[4] 王伟,李安春,徐方建,等. 北黄海表沉积沉积物粒度分布特征及其物源环境分析[J]. 海洋与湖沼,2009,40(5):525-531.
[5] 张剑,李日辉,王中波,等. 渤海东部与黄海北部表层沉积物的粒度特征及其沉积环境[J]. 海洋地质与第四纪地质,2016,36(5):1-12.
[6] 方海超,黄朋,孙家文,等. 鸭绿江端元粒度分级样品常量元素控制因素分析及物源识别[J]. 海洋地质与第四纪地质,2019,39(3):72-83.
[7] 张晓东,季阳,杨作升,等. 南黄海表层沉积物粒度端元反演及其对沉积动力环境的指示意义[J]. 中国科学:地球科学,2015,45(10):1515-1523.
[8] 汤世凯,于剑峰,李金鹏,等. 丁字湾近岸海域表层沉积物粒度特征及沉积动力环境[J]. 海洋地质与第四纪地质,2019,39(2):70-78.
[9] 刘升发,刘焱光,朱爱美,等. 东海内陆架表层沉积物粒度及其净输运模式[J]. 海洋地质与第四纪地质,2009,29(1):1-6.
[10] 窦衍光,陈晓辉,李军,等. 东海外陆架-陆坡-冲绳海槽不同沉积单元底质沉积物成因及物源分析[J]. 海洋地质与第四纪地质,2018,38(4):21-31.
[11] 段晓勇,印萍,刘金庆,等. 中国东部近海现代沉积环境[J]. 海洋地质与第四纪地质,2019,39(2):14-20.
[12] 何起祥,李绍全,刘健. 海洋碎屑沉积物的分类[J]. 海洋地质与第四纪地质,2002,22(1):115-121.
[13] 王中波,何起祥,杨守业,等. 谢帕德和福克碎屑沉积物分类方法在南黄海表层沉积物编图中的应用与比较[J]. 海洋地质与第四纪地质,2008,28(1):1-10.
[14] 刘志杰,殷汝广. 浅海沉积物分类方法研讨[J]. 海洋通报,2011,30(2):194-199.
[15] 汪亚平,高抒,贾建军. 胶州湾及邻近海域沉积物分布特征和运移趋势[J]. 地理学报,2000,55(4):449-458.
[16] 薛允传,贾建军,高抒. 山东月湖的沉积物分布特征及搬运趋势[J]. 地理研究,2002,21(6):707-714.
[17] 赵东波. 常用沉积物粒度分类命名方法探讨[J]. 海洋地质动态,2009,25(8):41-46.
[18] FOLK R L. A review of grain-size parameters[J]. Sedimentology,2010,6:73-93.
[19] 孔祥淮. 山东半岛东北部滨浅海区表层沉积物特征和沉积作用[D]. 青岛: 中国海洋大学, 2006.
[20] 孙东怀,安芷生,苏瑞侠,等. 古环境中沉积物粒度组分分离的数学方法及其应用[J]. 自然科学进展,2001,11(3):269-276.
[21] 孙有斌,高抒,李军. 边缘海陆源物质中环境敏感粒度组分的初步分析[J]. 科学通报,2003,48(1):83-86.
[22] 肖尚斌,李安春. 东海内陆架泥区沉积物的环境敏感粒度组分[J]. 沉积学报,2005,23(1):122-129.
[23] 刘升发,石学法,刘焱光,等. 中全新世以来东亚冬季风的东海内陆架泥质沉积记录[J]. 科学通报,2010,55(14):1387-1396.
[24] 孔祥淮,刘健,徐刚,等. 南黄海西部陆架区SYS-0803孔上部岩心的粒度特征及其环境意义[J]. 海洋地质与第四纪地质,2014,34(5):13-24.
[25] 向荣,杨作升,SAITO Y,等. 济州岛西南泥质区近2300a来环境敏感粒度组分记录的东亚季风变化[J]. 中国科学(D辑),2006,36(7):654-662.
[26] 项立辉. 长江口滨外泥质区末次冰消期以来沉积特征与沉积环境演化[D]. 青岛: 中国海洋大学, 2008.
[27] 郑浚茂. 陆源碎屑沉积环境的粒度标志[M]. 北京: 武汉地质学院北京研究生部, 1982, 72-100.
[28] 孔祥淮,刘健,李巍然,等. 山东半岛东北部海底表层沉积物粒度分布特征和沉积作用研究[J]. 海洋湖沼通报,2006(3):37-47.
[29] 杜鹏. 夏季桑沟湾三维水质数值模拟[D]. 青岛: 中国海洋大学, 2009.
-
图(11)
表(1)
计量
- 文章访问数: 504
- PDF下载数: 110
- 施引文献: 0