地理学报(英文版)

Journal of Geographical Sciences ›› 2009, Vol. 19 ›› Issue (6): 671-680.doi: 10.1007/s11442-009-0671-2

• Climate and Environmental Change • Previous Articles     Next Articles

Evidence for marine transgression between 7500–5400BC at the Luotuodun Site in Yixing, Jiangsu Province

LI Lan1, ZHU Cheng1, LIN Liugen2, ZHAO Quanhong3, SHI Gongyue4, ZHENG Chaogui5, FAN Chao1   

  1. 1. School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210093, China|
    2. Archaeological Institute of Nanjing Museum, Nanjing 210018, China|
    3. State Key Laboratory of Marine Geology, Tongji University, Shanghai 200092, China|
    4. Nanjing Institute of Geology and Paleontology, CAS, Nanjing 210093, China|
    5. Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008, China
  • Received:2009-02-14 Revised:2009-05-21 Online:2009-12-25 Published:2009-12-25
  • Supported by:

    National Science and Technology Project, No.2006BAK21B02; The Open Foundation of the State Key Laboratory of Loess and Quaternary Geology from the Institute of Earth Environment, CAS, No.SKLLQG0817; The Training Foundation of National Basis of Talents, No.J0630535; Foundation of Doctoral Program, No.20050284011; Test Foundation of Modern Analyses Center of Nanjing University, No.0209001309

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Abstract:

Based on archaeological excavations, 217 samples were collected from the Luotuodun Site. Of them 63 samples from the section plane of the site layer were used for identification analysis of foraminifera, plant debris and seed fossils, and four samples were used for 14C dating and relevant analysis. Through many kinds of experiments, we have drawn some conclusions. Firstly, benthic foraminifera, such as Ammonia compressiuscula and Ammonia cff. sobrina, are found in the 10th layer, indicating that between 7500 and 5400 BC, i.e. before the emergence of the Majiabang Culture, Luotuodun Site and its nearby regions had ever experienced a marine transgression event. Secondly, we have found 450 plant fossils in this site, such as Polygonum sp., Scripus sp., Najas sp., Physalis sp., which indicated lacustrine or swamp environment.

Key words: Luotuodun Site, Foraminifera, transgression event, plant fossils