Geochemical Record of Core PJ in Yangtze River Delta and Implications for Variations in Paleoenvironment

Abstract:

Geochemical elements, significant indicator of environmental change，have been widely used in paleoenvironment research. By comparative analysizing of sediment’s geochemical characterstics of core PJ and core ZX-1, almost opposite relations was found between them. In Holocene, there are repeated transgression-regression cycles and the deposition profile of core PJ was in the critical zone of transgression-regression. When climate was warm and humid, sea-level rose, the sedimentary environmental salinity increased and ability of element eluviate-leaching were weak, geochemical elements can not be effectively separated. On the contrary, when climate was dry and cold, sea-level became lower, the role of the element eluviate-leaching was enhanced, and different geochemical elements can be effective separated. This mechanism enables that indicators significance of core PJ’s geochemistry element changing is the opposite direction to other regions.

• Periodical: Advanced Materials Research (Volumes 183-185)
• Pages: 161-165
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.183-185.161
• Online since: January 2011
• Authors: Yong Hong Wu, Xiang Min Zheng, Li Min Zhou
• Keywords: Eluviate Separation, Geochemical Element, Paleoenvironment, Parallel Study, Yangtze River Delta

References

[1] Yan Wen, Gu Sen-chang, Chen Zhong, Chen Mu-hong: Journal of tropical oceanography, Vol. 21(2002), pp.75-83(in Chinese).

[2] Nesbitt, H.W., Young, G.M.: The Journal of Geology, Vol. 97(1989), pp.129-147.

[3] Chen, Z.L.: Postdoctoral Research Report. East China Normal University, Shanghai, China, (1996).

[4] Young, G., Nesbitt, H.W.: Abstracts for EUG XI, Theme CC: Climate Change. Cambridge Publications, the Conference Company, Cambridge, U.K. (2001), p.108.

[5] Dean W E, Gardner J V, Piper D Z: Geochimica et Cosmochimica Acta, Vol. 61(1997), pp.4507-4518.

DOI: 10.1016/s0016-7037(97)00237-8

[6] Shi Xuefa, Chen Li-rong: Oceanologia et Limnologia Sinica, Vol. 26(1995), pp.124-131(in Chinese).

[7] Zhen Xiangmin, in: Aeolian deposition and environment in changjiang delta and extending sea areas, edited by Jin Qingxiang, East China Normal University Press, Shanghai, China (1999).

[8] Li Congxian, Wang Pinxian, in: Late Quaternary stratigraphy Study of Yangtze River Estuary, edited by Hu Xiaochun, Science Press, Beijing, China (1998).

[9] Yang Jianqiang, Cui Zhijiu, Yi Chaolu, Zhang Wei, Liu Kexin: Acta Geographica Sinica, Vol. 59(2004), pp.525-533 (in Chinese).

[10] Wen, Qizhong, Sun, F.Q., Diao, G.Y., Yu, S.H.: Annual reports, Institute of Geochemistry, Academia Sinica (1981), pp.168-170 (in Chinese).

[11] Jing Tao, Min-Te Chen , Shiyuan Xu: Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 230(2006), pp.204-229.

[12] Leinen, M., Heath, G.R.: Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 36(1981), pp.1-21.

[13] White, J.W.C., Cials, P., Figgo, R.A., Keany, R., Markgraf, V.: Nature, Vol. 365(1994), pp.153-156.

[14] Parrington, J.R., Zoller, W.H., Aras, N.K.: Science, Vol. 220(1983), pp.195-197.

[15] Chen, Jun, An, Zhisheng, Wang, Yongjin: Science in China (D), Vol. 28(1998), pp.498-504.

[16] Chen, J., An, Z., Head, J.: Quaternary Research, Vol. 51(1999), pp.215-219.