Geochemical Characteristics of Sediment of
- 责任者：Wang Shanshan (Zhejiang Institute of Hydraulics & Estuary ; Hangzhou 310020 ; China) ; Cao Zhimin
- 刊名：Earth Science
- 出版年：2010
- 卷期：35(2)
- 关键词：三角洲沉积作用 ; deltaic sedimentation ; 粒度分析 ; grain-size analysis ; 珠江口 ; Zhujiang River Mouth
- 页码：p.261-267
- 图表：3 illus., 2 tables, 21 refs.
- 分类号：0200
- issnNo：ISSN1000-2383
- isbnNo：CN42-1233/P
The trace metal elements and average grain size were determined for sediments of Pearl River Estuary and three important factors were identified using factor analysis method, which controls chemical compositions of sediments, such as catchment erosion, biogenic deposit, marine dominated condition. Moreover, further research indicates that the factor score curves of the three factors can be used to represent the changes of humidity, temperature and the hydrodynamics, respectively, which provides a good effective approach to paleoenviromental reconstruction. On the basis of the study, the evolution history of the regional climate and environment is evaluated and it is revealed that the basic climate succession in the region of Pearl River Delta is the cool-humid, cool-dry, warm-dry, and warm-dry, warm-humid and warm-dry successively.