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系统分析北海外沙泻湖CK10钻孔岩芯的硅藻、有孔虫、介形虫化石, 并进行14C年代测定, 探讨硅藻、有孔虫组合特征、沉积相演化和地层年代。该孔全新世地层硅藻化石群自下而上划分为: Ⅰ. 波缘曲壳藻(Athnanthescrenulata)—亲缘桥弯藻(Cym bella affinis) —披针桥弯藻(Cym . lanceolata) ,Ⅱ.亲缘桥弯藻—波缘曲壳藻—卵形菱形藻(Nitzschia cocconeiformis) , Ⅲ. 亲缘桥弯藻—波缘曲壳藻—史密斯双壁藻(Diploneissm ithii),Ⅳ. 波缘曲壳藻—亲缘桥弯藻—条纹小环藻(Cyclotella striata), Ⅴ.卵形菱形藻—具槽直链藻(Melosira sulata)—柱状小环藻(Cyc. stytorum ), Ⅵ.条纹小环藻—柱状小环藻, Ⅶ. 具槽直链藻—条纹小环藻—卵形菱形藻, Ⅷ. 柱状小环藻等8 个硅藻组合带。有孔虫群自下而上划分为: Ⅰ. 毕克卷转虫变种(Am m onia beccarii var.) —瘦瘪雅得虫(Jadam mina m acrescens) , Ⅱ. 毕克卷转虫变种—异地希望虫(Elphidium advenum )—球室?
The diatom, foraminifera and ostracod fossils of CK10 drilling core in Shalai Lake of Beihai were systematically analyzed and the 14C dating was conducted to investigate the characteristics of diatom and foraminifera assemblages, the evolution of sedimentary facies and the age of strata. Holocene stratum diatom fossils in this hole are divided into bottom-up: Ⅰ. Athnanthes crenulata - Cym bella affinis - Cym. Lanceolata, II. Bentley algae - Quercus sp. - Nitzschia cocconeiformis, Ⅲ. Phyllostachys albiflorus - Quercus fasciatus - Diploneissmith ithii, Ⅳ. Quercus verrucosa - Cyclotella striata, V. Oviformis - Melosira sulata - Cyc. Stytorum, VI. Striped Cyclotella - Cyclotella cylindrica, Ⅶ. Grooved Strains algae - Striped Cyclotella - Oviformis, Ⅷ. Cylindrical algae and other 8 diatoms combination zone. Foraminifera groups are divided from bottom to top: Ⅰ. Am m onia beccarii var. - Jadam mina m acrescens, II. Bike entomological variant - Elphidium advenum - ball room?