钱塘江河口涌潮河段滩槽演替与沉积层序

涂俊彪; 范代读; 尚帅; 陈玲玲; 张悦

doi:10.3799/dqkx.2014.025

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

钱塘江河口涌潮河段滩槽演替与沉积层序

涂俊彪 , 范代读 , 尚帅 , 陈玲玲 , 张悦

文章导航 > 地球科学 > 2014 > 23(3): 261-270

引用本文:

Citation:

钱塘江河口涌潮河段滩槽演替与沉积层序

1.
同济大学海洋地质国家重点实验室，上海200092

作者简介: 涂俊彪（1989－）,男,硕士研究生,海洋地质学专业.

基金项目:
国家自然科学基金（Nos.41076016,41276045）

中国地质调查局海保工程专项（No.GZH201100203）

中央高校基本科研业务费专项资金

Evolution and Sedimentary Sequence of Tidal Channel-Flat System at Bore-Affected Reach of the Qiantang Estuary

1.
State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092,China
Fund Project: 国家自然科学基金（Nos.41076016,41276045）中国地质调查局海保工程专项（No.GZH201100203）中央高校基本科研业务费专项资金

摘要: 通过分析时间序列的卫片资料、4m高的露头剖面的沉积学和元素地球化学特征，研究钱塘江涌潮河段的滩槽冲淤变化规律、涌潮沉积特征和沉积层序．涌潮河段河道宽浅，受径流与潮流相互作用强烈，冲淤频繁且剧烈，滩槽演替存在约２０ａ的周期，与流域年代际洪、枯期转变有关．在滩槽叠置的垂向层序中，底部为河槽、低潮滩相的厚层块状砂质沉积，发育各种变形沉积构造，为典型的涌潮沉积；顶部为高潮滩相的潮汐韵律沉积，发育典型的潮汐成因的双黏土层、大小潮周期；二者之间的中潮滩相呈渐变过渡．犆犕图和概率累计曲线可较好地区分涌潮沉积与潮成砂、泥质沉积．涌潮沉积层Si／Al、Zr／Al、Ti／Al等元素比值较高，而潮汐韵律层Fe／Al、Mn／Al等元素比值较高，这与它们的赋存方式和水动力分异有关．Si、Zr和Ti主要见于石英和重矿物中，因此在强水动力沉积层中富集;而Fe、Mn易被黏土矿物吸附，在水动力较弱的中高潮滩富集．
- 钱塘江 /
- 涌潮沉积 /
- 沉积物 /
- 粒度分析 /
- XRF岩心无损探测 /
- 地球化学
Abstract: Sedimentary features of tidal-bore deposits,evolution and resultant sedimentary sequence of main channel and tidal flat in the Qiantang Estuary are studied in detail by analuses of time-series satellite photos,and sedimentological and geochemical characters of a 4m high crop.The wide and shallow channel at the bore-affected reach shifts rapidly under intense interaction of tidal flow and river runoff.There is channnel evolution cycle of ~20 years linked to the decadal alterations of dry and wet periods in the catchment.On the vertical facies association of tidal channel-flat system,the lower section is a typical tidal-bore deposit at the main channel and the lower tidal flat,characterized by thick massive sandy beds with well developed soft-sediment deformation structures.The upper section is tidal rhythmite at the higher tidal flat,typical of mud couplets and spring-neap tidal cycles of tidal origin.The middle tidal-flat facies bears both sedimentary features of tidal-bore deposits and tidal rhythmite.C-M diagram and probability cumulative curve are useful to differentiate tidal-bore deposits from tidal sandy/muddy deposits.There is a general trend of higher ratios of Si/Al,Zr/Al and Ti/Al in tidal-bore deposits,and Fe/Al and Mn/Al in tidal rhythmites,which is mainly related to elemental behavior and selected sorting of hydrodynamic.Elements of Si,Zr and Ti majorly present in quartz and heavy minerals are therefore abundant in the higher energy depositional environment,while Fe,Mn elements which can be easily absorbed by clay minerals are consequently enriched in the lower energy sedimentary environment.
- Qiantang River /
- tidal-bore deposite /
- sediments /
- grain-size analysis /
- XRF nondestructive core scanning /
- geochemistry

[1]	崔宇驰, 曹立成, 乔培军, 陈淑慧, 庞雄, 邵磊. 南海北部古近纪沉积物碎屑锆石U-Pb年龄及物源演化[J] . 地球科学, 2018, 43(11): 4169-4179. doi: 10.3799/dqkx.2017.594
[2]	潘峰, 郭占荣, 刘花台, 王博, 李志伟, 庄振杰. 潮滩沉积物-水界面磷、铁的高分辨率分布特征及生物地球化学行为[J] . 地球科学, 2018, 43(11): 4109-4119. doi: 10.3799/dqkx.2018.177
[3]	陈泰一, 魏启荣, 周江羽, 王旭东, 曾会兰, 王健, 吉雪峰, 许欢, 赵闪, 欧波. 西藏岗巴-东亚地区永珠组沉积时代及沉积环境[J] . 地球科学, 2018, 43(8): 2893-2910. doi: 10.3799/dqkx.2018.200
[4]	周海玲, 苏春利, 李俊霞, 谢先军. 大同盆地沉积物REE分布特征及其对碘富集的指示[J] . 地球科学, 2017, 42(2): 298-306. doi: 10.3799/dqkx.2017.022
[5]	杨文涛, 杜远生. 豫西济源盆地中生代泥岩地球化学特征对物源区的指示[J] . 地球科学, 2017, 42(1): 53-67. doi: 10.3799/dqkx.2017.004
[6]	叶加仁, 杨香华, 施和生, . 珠江口盆地惠州凹陷古近纪多幕裂陷旋回的沉积物源响应[J] . 地球科学, 2015, 24(6): 1061-1071. doi: 10.3799/dqkx.2015.088
[7]	王小群, 王兰生. 岷江叠溪古堰塞湖沉积物中孢粉特征[J] . 地球科学, 2013, 22(5): 975-982. doi: 10.3799/dqkx.2013.095
[8]	赵军, 肖承文, 王淼, 陈伟中. 测井资料在沉积物粒序反演中的应用[J] . 地球科学, 2013, 22(4): 792-796. doi: 10.3799/dqkx.2013.077
[9]	李超, 舒劲松, 许斐, 杨守业. 沉积物中铁的化学相态分析进展[J] . 地球科学, 2013, 22(3): 454-460. doi: 10.3799/dqkx.2013.045
[10]	张富元, 章伟艳, 张霄宇, 冯秀丽, 林霖, 朱克超, 陈奎英, 孟翊, 冯旭文. 深海沉积物分类与命名的关键技术和方案[J] . 地球科学, 2012, 21(1): 93-104. doi: 10.3799/dqkx.2012.009
[11]	赵悦, 丁旋. 巽他海峡BAR9442岩心30kaBP以来的沉积记录与古季风活动[J] . 地球科学, 2011, 20(4): -. doi: 10.3799/dqkx.2011.063
[12]	李永涛, 顾延生, 曲赞. 武汉天兴洲近代沉积物的磁性特征及其环境意义[J] . 地球科学, 2011, 20(4): -. doi: 10.3799/dqkx.2011.080
[13]	张玉芬, 李长安, 康春国, 严玲琴, 邵磊, 张勇. 江汉平原主要河流沉积物磁学特征及其与物源区表壳岩性的响应[J] . 地球科学, 2011, 20(4): -. doi: 10.3799/dqkx.2011.079
[14]	段毅, 何金先, 吴保祥, 徐丽, 张晓丽, 孙涛. 咸水湖泊沉积物中正构烷烃及其氢同位素组成与成因[J] . 地球科学, 2011, 20(1): 53-61. doi: 10.3799/dqkx.2011.006
[15]	段毅, 何金先, 吴保祥, 徐丽, 张晓丽, 孙涛. 咸水湖泊沉积物中正构烷烃及其氢同位素组成与成因(附表3)[J] . 地球科学, 2011, 20(1): -.
[16]	刘雪梅, 殷坤龙, 李远耀, 柴波, 汤罗圣. 三峡库区万州区山湾堰塘沉积物特征及演化历史[J] . 地球科学, 2010, 19(6): -. doi: 10.3799/dqkx.2010.121
[17]	张楗钰, 张克信, 季军良, 骆满生, 陈奋宁, 徐亚东, 王岳明. 青藏高原东北缘循化盆地渐新世-上新世沉积相分析与沉积演化[J] . 地球科学, 2010, 19(5): -. doi: 10.3799/dqkx.2010.091
[18]	张霄宇, 张富元, 高爱根, 章伟艳. 长江口及邻近陆架沉积物中Pt-Pd分异的物源示踪[J] . 地球科学, 2009, 18(4): -.
[19]	谢先军, 王焰新, 苏春利, 刘怀庆, 段萌语, 张宏达. 大同盆地高砷地下水系统沉积物环境磁学特征[J] . 地球科学, 2008, 17(1): -.
[20]	叶思源 , 武强, 钟少军, 周永青, 鲁静. 青岛胶州湾沉积物痕量元素黄铁矿化程度及其剖面类型[J] . 地球科学, 2006, 15(2): -.

点击查看大图

计量

文章访问数: 10035
HTML全文浏览量: 95
PDF下载量: 2549
被引次数: 0

钱塘江河口涌潮河段滩槽演替与沉积层序

作者简介: 涂俊彪（1989－）,男,硕士研究生,海洋地质学专业

1. 同济大学海洋地质国家重点实验室，上海200092

收稿日期: 2014-04-08
录用日期: 2014-04-08
网络出版日期: 2014-04-08

基金项目: 国家自然科学基金（Nos.41076016,41276045）中国地质调查局海保工程专项（No.GZH201100203）中央高校基本科研业务费专项资金

关键词:

摘要: 通过分析时间序列的卫片资料、4m高的露头剖面的沉积学和元素地球化学特征，研究钱塘江涌潮河段的滩槽冲淤变化规律、涌潮沉积特征和沉积层序．涌潮河段河道宽浅，受径流与潮流相互作用强烈，冲淤频繁且剧烈，滩槽演替存在约２０ａ的周期，与流域年代际洪、枯期转变有关．在滩槽叠置的垂向层序中，底部为河槽、低潮滩相的厚层块状砂质沉积，发育各种变形沉积构造，为典型的涌潮沉积；顶部为高潮滩相的潮汐韵律沉积，发育典型的潮汐成因的双黏土层、大小潮周期；二者之间的中潮滩相呈渐变过渡．犆犕图和概率累计曲线可较好地区分涌潮沉积与潮成砂、泥质沉积．涌潮沉积层Si／Al、Zr／Al、Ti／Al等元素比值较高，而潮汐韵律层Fe／Al、Mn／Al等元素比值较高，这与它们的赋存方式和水动力分异有关．Si、Zr和Ti主要见于石英和重矿物中，因此在强水动力沉积层中富集;而Fe、Mn易被黏土矿物吸附，在水动力较弱的中高潮滩富集．

English Abstract

Evolution and Sedimentary Sequence of Tidal Channel-Flat System at Bore-Affected Reach of the Qiantang Estuary

1. State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092,China

Received Date: 2014-04-08
Accepted Date: 2014-04-08
Available Online: 2014-04-08

Fund Project: 国家自然科学基金（Nos.41076016,41276045）中国地质调查局海保工程专项（No.GZH201100203）中央高校基本科研业务费专项资金

Abstract: Sedimentary features of tidal-bore deposits,evolution and resultant sedimentary sequence of main channel and tidal flat in the Qiantang Estuary are studied in detail by analuses of time-series satellite photos,and sedimentological and geochemical characters of a 4m high crop.The wide and shallow channel at the bore-affected reach shifts rapidly under intense interaction of tidal flow and river runoff.There is channnel evolution cycle of ~20 years linked to the decadal alterations of dry and wet periods in the catchment.On the vertical facies association of tidal channel-flat system,the lower section is a typical tidal-bore deposit at the main channel and the lower tidal flat,characterized by thick massive sandy beds with well developed soft-sediment deformation structures.The upper section is tidal rhythmite at the higher tidal flat,typical of mud couplets and spring-neap tidal cycles of tidal origin.The middle tidal-flat facies bears both sedimentary features of tidal-bore deposits and tidal rhythmite.C-M diagram and probability cumulative curve are useful to differentiate tidal-bore deposits from tidal sandy/muddy deposits.There is a general trend of higher ratios of Si/Al,Zr/Al and Ti/Al in tidal-bore deposits,and Fe/Al and Mn/Al in tidal rhythmites,which is mainly related to elemental behavior and selected sorting of hydrodynamic.Elements of Si,Zr and Ti majorly present in quartz and heavy minerals are therefore abundant in the higher energy depositional environment,while Fe,Mn elements which can be easily absorbed by clay minerals are consequently enriched in the lower energy sedimentary environment.