| 摘要: |
| 海岸线是海陆相交接的界线，是构成海岸地貌的一个重要部分。海陆变迁同人类生产活动关系十分密切，因而海岸线的变化以及以古海岸线为中心的海陆变迁问题，已经成为海洋地貌学的重大课题之一。
古海岸线的变迁遗迹遍布整个海岸带，近几年来己被人们不断认识和发现，确立了许多识别古海岸线遗迹的标志，诸如沉积相、地貌地形和古生态学标志以及人类活动文物标志等。
本文试图讨论将牡蛎礁作为识别古海岸线遗迹的古生态学标志或地貌地形标志的可能性。并应用牡蛎礁标志确立渤海莱州湾南部新河古海岸线的存在。 |
| 关键词: 牡蛎礁 古海岸线 |
| DOI： |
| 分类号: |
| 基金项目:中国科学院海洋研究所调查研究报告第444号 |
|
| THE OSTRACEAN REEFS AND THE XINHE PALEO-COASTLINE |
|
Han Yousong
|
|
Institute of Oceanology, Academia Sinica
|
| Abstract: |
| In present paper, based on the study of Xinhe paleo-ostracean reefs in the littoral plain of the southern part of Laizhou Wan (the Gulf of Bohai), we consider that the ostracean reefs are typical of a peculiar palaeoecological environment and are a good criteria which may be used both to identify paleo-coastline and to reconstruct palaeogeographic environment. According to the indicator of paleo-ostracean reefs, the existence of the Xinhe paleo-coastline is confirmed.
The Xinhe paleo-ostracean reefs existed at 5000 to 6000yrs. ago (C14 dating), i.e. the relatively resistant stage of transgression during the post-glacial period. The characteristic of this stage is the development of ostracean reefs, therefore here termed "the stage of ostracean reefs". The sea level, at that time, would stand 2 to 3 m higher than at present. |
| Key words: THE XINHE PALEO-COASTLINE ostracean reefs |
