渤海南部现代沉积物堆积速率和沉积环境

Accumulation Rates of Sediment and Sedimentary Environment in the South Bohai Sea

本文介绍了采自渤海南部六个箱式岩芯的２１０Ｐｂ放射性活度的测定，根据２１０Ｐｂ放射性活度在岩芯中垂直分布趋势，结合我们先前获得的有关资料，探讨渤海南部沉积物堆积速率和沉积特征及沉积环境。这对研究所形成岩芯沉积作用过程和海底油气开发工程具有双重意义。

To evaluate accumulation rates of sediment,210 Pb activity of six cores from the South Bobai Sea have been determined.210Pb data inferred that:(1)in Bobai Bay the accumulation rates ranged from 0.15 to 0.71 cm/a,(2) in the central part of the Bobai Sea the sedimentation rates ranged from 0.15 to 0.41 cm/a,(3) in Laizhou Bay and the Huanghe Rive delta the accumulation rates ranged from 1.29 to 9.59 cm/a.According to the profiles of 210Pb activity in the cores and varied accumulation rates,sedimentary environment and sedimentation features in the south Bobal sea have been discussed.It is generally accepted that this survey has valuable application in the study of stratigraphic time scale and has provided scientific data for the submarine oil exploition in the Bobai Sea.