Progradation of the Changjiang River delta since the mid-Holocene
- 53 Downloads
Subaqueous deltaic deposits with approximately 30 radiocarbon ages show that the Changjiang River delta was strongly affected by tides and that the delta progradation rate after 2 kaBP was almost double the rate before 2 kaBP. This change in the progradation rate correlates well with the active extension of the subaerial delta plain shown by previous work. Widespread human activities, such as farming, deforestation, and dike construction, probably resulted in an increase in sediment discharge to the river-mouth area.
KeywordsChangjiang Yangtze sediment discharge delta progradation AMS radiocarbon dating human impact
Unable to display preview. Download preview PDF.
- 1.Wang, J., Guo, X., Xu, S. et al., Evolution of the Holocene Changjiang delta, Acta Geol. Sin. (in Chinese), 1981, 55: 67.Google Scholar
- 3.Chen, X., An integrated study of sediment discharge from the Changjiang River, China, and the delta development since the mid-Holocene, J. Coastal Res., 1996, 12: 26.Google Scholar
- 4.Hori, K., Saito, Y., Zhao, Q. et al., Sedimentary facies and Holocene progradation rates of the Changjiang (Yangtze) delta, China, Geomorphology, in press.Google Scholar
- 5.Saito, Y., Sea levels of the last glacial in the East China Sea continental shelf, The Quatenary Research (Daiyonki-Kenkyu) (in Japanese with English abstract), 1998, 37: 237.Google Scholar
- 8.Winkler, M. G., Wang, P. K., The Late Quaternary vegetation and climate of China (eds. Wright, H. E. Jr., Kutzbach, J. E., Webb, T. et al.), Global Climates Since the Last Glacial Maximum, Minnesota: University of Minnesota Press, 1993, 221–264.Google Scholar
- 9.Chen, Z., Li, J., Shen, H., Yangtze River of China: Historical analysis of discharge and sediment flux variability, Geomorphology, in press.Google Scholar