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《Quaternary Sciences》 2008-04
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Shi Gongle①② Zhang Bole③④ Leng Qin① Wang Li①② Jiang Qing①②(①State Key Laboratory of Palaeobiology and Stratigraphy,Nanjing Institute of Geology and Palaeontology,Nanjing210008;②Graduate University of Chinese Academy of Sciences,Beijing100049;③Qingdao Research Institute of Geotechnical Prospecting and Surveying,Qingdao266003;④Construction Management Center of the Qingdao International Convention Center,Qingdao266061)  
The terrestrial Holocene sequence of the Qingdao city was divided into 4 layers,i.e.,layers ⑨,⑦,⑤,and ③ from the bottom upwards by previous researches.The deposition is mainly composed of silty soil,silty clay,and sands.Recently an exquisitely preserved megafossil flora,a lgerstatten,comprising a large number of fruits and seeds,leafy branches,leaves,stems,and pieces of wood was discovered from the Holocene terrestrial stratum at the construction site of the Qingdao International Convention Center which with layers ⑤ and ③ preserved.Fruits and seeds are sieved from silty soil and silty clay of both Layer ⑤ and Layer ③,while the top of Layer ⑤,a thin bed of silty clay also yields leafy branches,leaves,stems,and pieces of wood.Three 14C dating analyses on material from the bottom of Layer ⑦,the top of Layer ⑤,and the top of Layer ③ from a drilling core close to the fossil site show ages of 6264±80aB.P.,4805±150aB.P.,and 3550±115aB.P.respectively.While fossils of leafy branches,leaves,stems,and pieces of wood are found mainly belonging to deciduous Fagaceae L.,about ten thousands specimens of 3-dimensionally preserved fruits and seeds obtained from layers ⑤ and ③ at the fossil site have shown their high diversity as well as different components in different layers.They are primarily assigned to 38 genera and 62 species,belonging to 24 angiospermous families.The discovery of this plant fossil lgerstatten with sequenced layers deposited during thousands of years in Holocene provides an opportunity to understand the evolutionary history of vegetation in Holocene in Qingdao area along with the climate change and human activity.
【Fund】: 中国科学院知识创新工程重要方向项目(批准号:KZCX2-YW-105);; 中国科学院/国家外国专家局创新团队国际合作伙伴计划;; 国家重点基础研究发展规划项目(批准号:2006CB806400);; 国家自然科学基金项目(批准号:J0530085)资助
【CateGory Index】: P534.632
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