Holocene Sedimentary Environments and Sea Level Change Based on Qingfeng Section, Jianhu, Jiangsu, China
-
摘要: 应用有孔虫、介形虫、软体动物和现代沉积环境等方面的研究成果,对江苏建湖庆丰剖面所显示的全新世沉积环境和海面变化进行讨论。认为在露头上大量原地埋藏的软体动物壳体指示环境的作用比有孔虫埋藏群更有意义。庆丰剖面所揭示的情况是 6 0 0 0～ 12 70aBP该地区一直处于潮间带—河口湾环境。 6 0 0 0aBP以前海面是上升的,6 0 0 0aBP达到了与现今海面相当的位置,其后海面是稳定的,看不出海面波动现象。Abstract: The Holocene strata at Qingfeng section, Jianhu County, Jiangsu Province are 405 cm thick. Most parts of the sediments were thought to be formed in lagoon or bay environments and the bed 6 in coastal low land (4 000～ 2 300 aBP ). A very accurate Holocene sea level change curve with many fluctuations and 2～3 m higher in 6 500～4 000 aBP and 1.5 m lower sea level in 4 000～2 300 aBP than that of the present was drawn by ZHAO Xitao et al. The author put forward different viewpoints on environments and sea levels showed by Qingfeng Section. Bed 1 and the lower part of bed 2 were formed in fresh water marsh environment; the upper part of bed 2 and beds 3, 4 and 5 were formed in intertidal zone. The sediments of bed 6 are products during river flood in estuary. The bed 7 is composed of upper estuary sediments. The sea level since 6 000 aBP should be stable. The very accurate sea level change by foraminiferal thanotocoenose drawn by ZHAO Xitao et al is without the oretical basis and the conclusions on sea level change are unbelievable.
-
Key words:
- Qingfeng section /
- Holocene /
- sedimentary environment /
- foraminifera /
- sea level change
-
[1] 赵希涛,王绍鸿.第九章江苏建湖全新统[A].见:杨子庚,林和茂编,中国第四纪地层与国际对比[C].北京:地质出版社 1996.184～195 [2] 赵希涛,韩有松,李平日等.第二章区域海岸演化与海面变化及其地质记录.见:赵希涛编,中国海面变化[C].济南:山东科学技术出版社,1996.44～150 [3] 赵希涛,陈宗镛,朱季文.结语[A].见:赵希涛编,中国海面变化[C].济南:山东科学技术出版社,1996.430～433 [4] Boersma A.Foraminifera[A].In:Haq B U,Boersma A,eds.Introduction to marine micropaleontology [C].New York:Elesevier,1978.19～77 [5] 薛春汀,成国栋,周永青.黄河三角洲地区早全新世地层潮坪沉积物[J].海洋地质与第四世纪地质,1987,7(增刊):29～39 [6] 齐钟彦,马绣同,王祯瑞等,黄渤海软体动物[M].北京:农业出版社,1989.309 [7] 蔡英亚,张英,魏若飞.贝类学概论[M].上海:上海科学技术出版社,1979.303 [8] 张玺,齐钟彦,贝类学纲要[M].北京:科学出版社,1961.387 [9] Reineck H E,Singh I B.Depositional sedimentary environments,2nd.[M].New York:Springer-Verlag,1980.549 [10] 刘月英,张文珍,王月先等.中国经济动物淡水软体动物[M].北京:科学出版社,1979.134 [11] 汪品先,章纪军,闵秋宝.东海表层沉积中有孔虫的分布 [A].见:汪品先编,海洋微体古生物论文集[C].北京:海洋出版社,1980.20～38 [12] 赵泉鸿.东海、黄海海岸带现代介形虫分布的研究[J].海洋学报,1985,7(2):193～204 [13] 汪品先,闵秋宝,卞云华等.河口有孔虫的搬运作用及其古环境意义(1),(2)[J].海洋地质与第世纪地质,1986,6(2):53～66;1986,6(3):83～92 [14] 赵泉鸿,卞云华,汪品先.上海芦潮港海岸带有孔虫群动态与埋葬群形成[J].微体古生物学报,1992,9(4):349～362 [15] 汪品先.微体化石在海侵研究中的应用和错用[J].第四纪研究,1992,(2):321～331 [16] Scott D S,Medioli F S.Vertical zonations of marsh foraminifera as accurate indicators of former sea-levels[J].Nature,1978,272 (6):528～531 [17] 江苏省地质矿产局.江苏省及上海市区域地质[M].北京:地质出版社,1980.857 [18] 任美锷.江苏省海岸带和海涂资源调查 [M].北京:海洋出版社,1986.517 -
点击查看大图
计量
- 文章访问数: 408
- HTML全文浏览量: 0
- PDF下载量: 658
- 被引次数: 0
下载:
