On the Geochemical Processes of Seawater Intrusion in the Western Section of the Haicheng District of Beihai, Guangxi
详细信息
- 责任者：Yao Jinmei (School of Water Resources and Environment ; China University of Geosciences ; Beijing 100083 ; China) ; Zhou Xun
- 刊名：Acta Geologica Sinica
- 出版年：2011
- 卷期：85(1)
- 关键词：水文地球化学 ; hydrogeochemistry ; 含水层 ; aquifers ; 海水入侵 ; sea water encroachment ; 广西 ; Guangxi Province
- 页码：p.136-144
- 图表：7 illus., 7 tables, 21 refs.
- 分类号：1701
- issnNo：ISSN0001-5717
- isbnNo：CN11-1951/P
摘要
Aquifer was once aggressed by seawater in the western section of the Haicheng district in Beihai, Guangxi. Geochemical processes occurring with seawater intrusion is of concern. The research results suggest that after aggression of seawater, the aquifer underwent the dissolution of K-feldspar, dolomite and chlorite, along with mixture directly with freshwater and seawater. Deposition reaction of calcite and illite and liquid-rock reaction such as cation exchange occurred between clay minerals and groundwater, with exchange of Na+ and Ca2+ or Mg2+ (removal of Na+ from solution). The value of dolomite dissolution amount suggests that dolomite took place dissolution reaction, indicating that there has been no dolomitization even happening in this zone.