Holocene diatom records in the Rongjiang Plain and implications for palaeoenvironmental changes

ZHANG Kai; LING Ken; LIU Chunlian; YIN Jian; WU Yueqin

doi:10.13471/j.cnki.acta.snus.2020.03.004

您当前的位置：

首页 >

文章列表页 >

Holocene diatom records in the Rongjiang Plain and implications for palaeoenvironmental changes

更新时间：2023-12-11

- Holocene diatom records in the Rongjiang Plain and implications for palaeoenvironmental changes
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 59, Issue 3, Pages: 32-42(2020)
- 作者机构：
  
  1. 中山大学地球科学与工程学院／广东省地球动力作用与地质灾害重点实验室,广东,广州,510275
  2. 广东省地质调查院,广东,广州,510080
- 作者简介：
- 基金信息：
- DOI：10.13471/j.cnki.acta.snus.2020.03.004
  CLC：
- Published：2020，
  
  Published Online：25 May 2020，
扫描看全文
ZHANG Kai, LING Ken, LIU Chunlian, et al. Holocene diatom records in the Rongjiang Plain and implications for palaeoenvironmental changes. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 59(3):32-42(2020)
DOI：

ZHANG Kai, LING Ken, LIU Chunlian, et al. Holocene diatom records in the Rongjiang Plain and implications for palaeoenvironmental changes. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 59(3):32-42(2020) DOI： 10.13471/j.cnki.acta.snus.2020.03.004.

摘要

通过对榕江平原揭阳地区钻孔ZK01和ZK02硅藻记录的分析，结合沉积学特征和年代数据，重建榕江平原全新世以来的古环境演化。约10.4~8.5 ka B.P.，钻孔所在地尚未受到海水影响，发育河漫滩-淡水沼泽环境。8.5~5.5 ka B.P.海水入侵，形成潮间带沼泽-潮滩相沉积。5.5~3.9 ka B.P.本区为河口湾环境，约5.5 ka B.P.海侵影响达到最大，硅藻总丰度和分异度达到最高值。3.9~3.7 ka B.P.发生一次短暂海退，硅藻总丰度明显下降，ZK01孔发育咸水沼泽相沉积，ZK02孔仍为河口湾相沉积。3.7~2.4 ka B.P.海平面再次上升至相对稳定，研究区持续发育河口湾环境，期间出现3次小规模的水深变化旋回。2.4 ka B.P以来海水退出，河流作用增强，研究区发育三角洲平原相沉积。

Abstract

Holocene palaeoenvironmental reconstruction was carried out based on diatom records

together with sedimentology analysis and dating results of boreholes ZK01 and ZK02 from the Rongjiang Plain. A flood plain-freshwater swampy environment developed between

10.4 and 8.5 ka B.P..

During this time the seawater has not intruded into the study area yet. At around

8.5ka B.P.

diatoms showed up for the impact of seawaters and the environment was characterized by an intertidal marsh. Between

5.5 and 3.9 ka B.P.

an estuary environment dominated in the study area with the rapid transgression. The maximum transgression occurred around 5.5 ka B.P.

evidenced by the highest abundance and diversity of diatoms. A short-time regression occurred between 3.9 and 3.7 ka B.P. while a brackish marsh environment existed. From 3.7 to 2.4 ka B.P.

the sea level gradually rose to a stable level and an estuary environment developed. Three short-term fluctuations were recorded by diatoms in this period

indicating changes in water depth and salinity. Since 2.4 ka B.P.

the seawater retreated and an alluvial plain developed in the study area.

关键词

榕江平原硅藻全新世古环境

Keywords

Rongjiang PlaindiatomHolocenepalaeoenvironment

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Some Problems on the Development of Zhujang(Pearl River)Estuary and Delta during the Holocene Epoch

Microfossil Records of Borehole PRD16 and Palaeoenvironment since the Late Pleistocene in the Pearl River Delta

On the sedimentary environment change since Holocene in the Sanya Bay, Hainan Island

Related Author

ZHUANG Chang

LIU Chunlian

WU Jie

YANG Tingting

YIN Jian

孙倩文

黄康有

谢德豪

Related Institution

中山大学地理学系

Guangzhou Marine Geological Survey



Deparment of Geosciences, Sun Yatsen University

School of Earth Science and Geological Engineering, Sun Yat-sen University

Postal code：510275
Tel：020-84112585，84113223 Email：xuebaozr@mail.sysu.edu.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰