粒度标(GSL)和氧化还原度(ROD)在渤海南部海域沉积物环境研究中的应用

GRAIN SIZE LABEL (GSL) AND REDOX DEGREE (ROD) IN THE STUDY ON SEDIMENT ENVIRONMENTS OF SOUTHERN BOHAI SEA

渤海是我国重要的油气田经济海区,目前已陆续开发。沉积物类型及其氧化还原环境的研究对于了解沉积物的形成、来源,以及埋葬后的早期成岩作用具有重要意义。海洋沉积的环境是海洋地质学的重要研究内容之一,以往这方面的研究大多集中于地球化学领域,而从化学角度研究这个问题的报道则很少,且缺乏系统性(Parker et al.,1983;

Southern Bohai Sea sediment types and redox environments were studied by using the new concepts of "Grain Size Label (GSL)" and "Redox Degree (ROD)". The GSL, the pure chemical standard, has advangage for studying sediment grain size. The ROD gives a quantitative classification to marine sediment redox environments. The main results were follows: The mud (silt clay) is the first and silt is the second in surface sediments, but silt is the first and mud second in the 1.50m sediment layer. Reduction is the characteristic in the two layers sediments. The main oxidation regions centered between the estuary of the Luanhe River and the area west of Laotieshan.