江苏建湖庆丰剖面全新世有孔虫与海面变化

Holocene Foraminiferal Fauna and Sealevel Changes in Qingfeng Section, Jianhu County, Jiangsu Province

对庆丰剖面全新统每5cm取一个样，进行有孔虫分析，划分了4个组合，讨论了海面变化．7.5kaBP以前，海面在0m以下，但波动上升．7.5～4.0kaBP，为高海面时期，峰期出现于6.4kaBP，5．6kaBP，5.1kaBP，4．4kaBP，最高海面在5.6kaBP前后，可达＋4m左右；两个低于0m的谷期出现在6．6kaBP和4．6kaBP．3．9～2．2kaBP海面较低，海水未及庆丰．2．2kaBP后还有一次较高海面．

Author concentrately collected the samples from the Holocene strata ofthe section, 82 of which per 5cm were for foraminiferal analysis. They can be divided into 4 forandniferal assemblage zones in the Holocene strata. We have established a curveof the Holocene sealevel changes in Qingfeng Section. Before 7.5kaBP, the sealevel altitude was lower than today, sealevel had been rising with fluctuating trend. 7.5kaBP-4.0kaBP, this period was the highest Holocene sealeveel period, at about 6. 4kaBP,5. 6kaBP, 5. 1kaBP, 4. 4kaBP the sealevel reached the highest altitudes, it reached even＋4m. At 6. 6kaBP and 4. 6kaBP, the sealevel dropped in short time, which formed twolow sealevel stands. Since 3.9kaBP the sealevel altitude was lower than the present.2. 2kaBP-1.0kaBP, the sealevel higher than the present sealevel.