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A STUDY OF THE SHALLOWLY-BURIED PALEOCHANNEL ZONES IN THE SOUTH COAST PLAIN OF THE LAIZHOU BAY
Author(s): LI Daogao, ZHAO Minghua, HAN Mei, JIANG Aixia, ZHANG Zulu
Pages: 23-
29
Year: 2000
Issue:
1
Journal: MARINE GEOLOGY & QUATERNARY GEOLOGY
Keyword: 浅埋古河道带; 海(咸)水入侵灾害; 莱州湾南岸平原;
Abstract: 莱州湾南岸平原在埋深60 m内的浅埋古河道带,可分成弥河、潍河和白浪河3个系统,它们大都呈掌状、放射状分布,并与其所属河流的冲洪积扇范围相吻合,该区古河道的形成和发育是新构造运动和古气候环境演变的结果.自晚更新世晚期以来,该区有4期古河道发育,其中玉木早冰期古河道和玉木主冰期古河道的砂体沉积粒度粗、连通性好、分布广,既是富水性强、水质好的淡水含水层,又是该区海(咸)水入侵的主要通道,控制在浅埋古河道带超采地下淡水,并在丰水季节利用其进行地下水回灌,是治理该区海(咸)水入侵灾害的重要措施之一.
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