江苏北部条子泥潮滩波痕沉积物粒度特征
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摘要
粒度是沉积物的重要结构特征,分析沉积物的粒度分布能够重建其沉积水动力方式和水动力条件,有效判断沉积物的沉积环境。对江苏北部东台县弶港镇条子泥潮滩的沉积构造进行了现场观察,识别了梳状波痕、平行波痕、不连续波痕、干涉波痕、平顶波痕和流水波痕等6种不同类型的波痕。选取不同波痕和波痕不同部位的10个沉积物样品进行粒度分析,结果显示,区内的潮滩沉积物主要为极细砂和粉砂,10个样品的粒度频率曲线皆呈不对称单峰型,粒度概率累积曲线多表现为两段式,表明沉积物总体分选较好。不同样品粒度参数的差异性分析结果表明,沉积物的分选性不仅与潮滩环境的水动力条件有关,也受局部水动力强度、水动力作用时间影响。该研究丰富了对条子泥潮滩沉积的地质认识,也为类似的地下潮汐成因砂体研究提供了可供对比的实例。
Grain size distribution is an important textural feature of sediments.Grain size analysis of sidements can be used to establish the method and the conditions for hydrodynamic reconstruction for an effective sedimentary environment identification.Through a field sediment observation on the Tiaozini tidal flat in Jianggang Town of Dongtai County in northern Jiangsu Province,six types of ripples are identified,including comb-shaped ripple,parallel ripple,discontinuous ripple,interference ripple,flaten ripple and current ripple.The grain size distribution of 10 sediment samples with different ripple marks and in different positions of ripple marks shows that the tidal flat sediments in this area are mainly very fine sand and silt sand.The grain size frequency curves of the 10 samples are asymmetrical with single peak,and the probability cumulative curves are mostly two-segmented,which indicates that the sediments are well sorted in general.Analysis for the difference of grain size parameters among different samples shows that the sorting of sediments is not only related to the hydrodynamic conditions of tidal flat environment,but also affected by local hydrodynamic strength and the time of sedimentary processes.This study enriches the recognition of tidal flat researches in Tiaozini Area and provides an analogy for studying the genesis of underground tidal deposits.
Grain size distribution is an important textural feature of sediments.Grain size analysis of sidements can be used to establish the method and the conditions for hydrodynamic reconstruction for an effective sedimentary environment identification.Through a field sediment observation on the Tiaozini tidal flat in Jianggang Town of Dongtai County in northern Jiangsu Province,six types of ripples are identified,including comb-shaped ripple,parallel ripple,discontinuous ripple,interference ripple,flaten ripple and current ripple.The grain size distribution of 10 sediment samples with different ripple marks and in different positions of ripple marks shows that the tidal flat sediments in this area are mainly very fine sand and silt sand.The grain size frequency curves of the 10 samples are asymmetrical with single peak,and the probability cumulative curves are mostly two-segmented,which indicates that the sediments are well sorted in general.Analysis for the difference of grain size parameters among different samples shows that the sorting of sediments is not only related to the hydrodynamic conditions of tidal flat environment,but also affected by local hydrodynamic strength and the time of sedimentary processes.This study enriches the recognition of tidal flat researches in Tiaozini Area and provides an analogy for studying the genesis of underground tidal deposits.
引文
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[19]陈俊飞,李琦,朱如凯,等.鄂尔多斯盆地西南部长8段致密砂岩储层粒度特征及其环境指示意义[J].大庆石油地质与开发,2018,37(4):10～19.
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[22]李红军,刘月,程岩,等.鸭绿江口沉积粒度特征及其对沉积环境演化的指示[J].海洋地质与第四纪地质,2017,37(3):62～70.
[23]张平,宋春晖,杨用彪,等.稳定湖相沉积物和风成黄土粒度判别函数的建立及其意义[J].沉积学报,2008,26(3):501～507.
[24]唐丽玉.福建深沪湾海滩SSZ1孔粒度分析[J].亚热带资源与环境学报,2000,15(1):20～23.
[25]李占海,高抒,沈焕庭.大丰潮滩悬沙粒径组成及悬沙浓度的垂向分布特征[J].泥沙研究,2006,31(1):62～70.
[26]张璞,陈建强,田明中,等.福建省泉州市第四纪沉积物粒度特征及沉积环境分析[J].盐湖研究,2005,13(2):275～283.
[27]李明龙,郑德顺,龚文磊,等.济源盆地中侏罗统马凹组砂岩粒度特征分析[J].沉积与特提斯地质,2013,33(2):25～31.
[28]宋红瑛,刘金庆,印萍,等.日照近海表层沉积物粒度特征与沉积环境[J].中国海洋大学学报(自然科学版),2016,46(3):96～104.
[2]张瑞瑾.河流泥沙动力学[M].北京:中国水利水电出版社,1998.
[3]钱宁,万兆慧.泥沙运动力学[M].北京:科学出版社,2003.
[4]刘家驹.海岸泥沙运动研究及应用[M].北京:海洋出版社,2009.
[5]徐国宾.河流动力学专论[M].北京:中国水利水电出版社,2013.
[6]钟德钰,张磊,王光谦.泥沙运动力学研究进展和前沿[J].水利水电科技进展,2015,35(5):52～58.
[7]齐亚林,赵彦德,李元昊,等.泥沙动力学研究方法、技术、进展及沉积学意义[J].地球科学前沿,2018,8(1):92～98.
[8]Cornillault J.Particle size analyzer[J].Applied Optics,1972,11:265～268.
[9]成都地质学院陕北队.沉积岩(物)粒度分析及其应用[M].北京:地质出版社,1978.
[10]中国科学院地质研究所.沉积岩石学研究[M].北京:科学出版社,1981.
[11]W.V.恩格尔哈特.沉积岩石学(Ⅲ):沉积物和沉积岩的成因[M].北京:地质出版社,1982.
[12]McCave I N,Syvitski J P M .Principles and methods of geological particle size analysis[M].Cambridge:Cambridge University Press,1991:3～21.
[13]Syvistski J P M.Factor analysis of size frequency distributions:significance of factor solutions based on simulation experiments[M].Cambridge:Cambridge University Press,1991:249～263.
[14]袁文芳,陈世悦,曾昌民,等.柴达木盆地西部地区第三系碎屑岩粒度概率累积曲线特征[J].石油大学学报( 自然科学版),2005,29(5):12～18.
[15]朱筱敏.沉积岩石学[M].北京:石油工业出版社,2008.
[16]蒋明丽.粒度分析及其地质应用[J].石油天然气学报(江汉石油学院学报),2009,31(1):161～163.
[17]德勒恰提,王威,王利,等.粒度分析在吉木萨尔凹陷梧桐沟组沉积相研究中的应用[J].新疆大学学报(自然科学版),2012,29(2):142～149.
[18]刘智荣,沈军,黄静宜,等.河北三河晚更新世地层粒度特征分析[J].地质学报,2016,90(5):997～1005.
[19]陈俊飞,李琦,朱如凯,等.鄂尔多斯盆地西南部长8段致密砂岩储层粒度特征及其环境指示意义[J].大庆石油地质与开发,2018,37(4):10～19.
[20]陈君,陈宏友,徐国华,等.江苏条子泥沙洲内缘区潮滩粒度特征及其影响因素[J].海洋地质与第四纪地质,2011,31(6):21～26.
[21]沈明球,房建孟,高爱仙.影响上海市及邻近区域台风的灰色预测[J].应用海洋学学报,1999,18(3):235～238.
[22]李红军,刘月,程岩,等.鸭绿江口沉积粒度特征及其对沉积环境演化的指示[J].海洋地质与第四纪地质,2017,37(3):62～70.
[23]张平,宋春晖,杨用彪,等.稳定湖相沉积物和风成黄土粒度判别函数的建立及其意义[J].沉积学报,2008,26(3):501～507.
[24]唐丽玉.福建深沪湾海滩SSZ1孔粒度分析[J].亚热带资源与环境学报,2000,15(1):20～23.
[25]李占海,高抒,沈焕庭.大丰潮滩悬沙粒径组成及悬沙浓度的垂向分布特征[J].泥沙研究,2006,31(1):62～70.
[26]张璞,陈建强,田明中,等.福建省泉州市第四纪沉积物粒度特征及沉积环境分析[J].盐湖研究,2005,13(2):275～283.
[27]李明龙,郑德顺,龚文磊,等.济源盆地中侏罗统马凹组砂岩粒度特征分析[J].沉积与特提斯地质,2013,33(2):25～31.
[28]宋红瑛,刘金庆,印萍,等.日照近海表层沉积物粒度特征与沉积环境[J].中国海洋大学学报(自然科学版),2016,46(3):96～104.
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