|
|||||
|
|
| 渤海菜州湾第四纪晚期以来微体化石组合特征和沉积环境演化 | |
| 引用本文： | 林防,王建中,李建芬,裴艳东,康慧.渤海菜州湾第四纪晚期以来微体化石组合特征和沉积环境演化[J].地质通报,2005,24(9):879-884. |
| 作者姓名： | 林防 王建中 李建芬 裴艳东 康慧 |
| 作者单位： | 1. 中国地质科学院水文地质环境地质研究所,河北,石家庄,050061;中国地质调查局天津地质矿产研究所,天津,300170 2. 中国地质科学院水文地质环境地质研究所,河北,石家庄,050061 3. 中国地质调查局天津地质矿产研究所,天津,300170 |
| 摘 要： | 对渤海莱州湾南岸央子镇YZ1钻孔取微体古生物样品18个，通过分析鉴定和地层对比，以及对微体古生物化石进行属种、丰度和分异度分析，共划分出4个化石组合层段。根据化石组合特征分析认为：第Ⅰ、第Ⅱ微体化石组合为全新世海侵的产物。第Ⅰ组合代表了海进序列，沉积环境为潮上带—潮间带；第Ⅱ组合为海退序列，沉积环境为潮间带—潮下带。第Ⅲ、第Ⅳ组合分别是晚更新世2次海侵的产物。第Ⅲ组合为晚更新世末期海侵的产物，海侵规模较大，沉积环境为滨海潮坪—潮间带；第Ⅳ组合海侵规模较小，陆相因素增大，沉积环境为河口—滨岸带或者为海陆交互相。 |
| 关 键 词： | 莱州湾 介形类 有孔虫 化石组合 沉积环境 第四纪 |
| 文章编号： | 1671-2552(2005)09-0879-06 |
| 修稿时间： | 2004年8月10日 |
Characteristics of microfossil assemblages and evolution of the sedimentary environment since the late Quaternary in the Laizhou Bay, Bohai Sea |
|
| LIN Fang,WANG Jianzhong,LI Jianfen,PEI Yandong,KANG Hui . Institute of Hydrogeology and Environmental Geology,CAGS,Shijiazhuang,Hebei,Chin,. Tianjin Institute of Geology and Mineral Resources,China Geological Survey,Tianjin,China.Characteristics of microfossil assemblages and evolution of the sedimentary environment since the late Quaternary in the Laizhou Bay, Bohai Sea[J].Geologcal Bulletin OF China,2005,24(9):879-884. | |
| Authors: | LIN Fang WANG Jianzhong LI Jianfen PEI Yandong KANG Hui Institute of Hydrogeology and Environmental Geology CAGS Shijiazhuang Hebei Chin Tianjin Institute of Geology and Mineral Resources China Geological Survey Tianjin China |
| Institution: | LIN Fang,WANG Jianzhong,LI Jianfen,PEI Yandong,KANG Hui . Institute of Hydrogeology and Environmental Geology,CAGS,Shijiazhuang,Hebei,Chin,. Tianjin Institute of Geology and Mineral Resources,China Geological Survey,Tianjin,China |
| Abstract: | Eighteen microfossil samples were taken from borehole YZ1 at Yangzi Town on the southern coast of the Laizhou Bay of the Bohai Sea. Based on the stratigraphic correlation and analysis and identification of the genera,abundances and di- versities of microfossils,four fossil assemblage zones are distinguished. According to the characteristics of microfossil assemblages, the authors think that microfossil assemblages II and I are products of Holocene marine transgression. Assemblage I represents a transgressive sequence and the sedimentary environment is marked by the supratidal zone- intertidal zone. Assemblage II repre- sents a regressive sequence and the sedimentary environment is marked by the supratidal zone- subtidal zone. Assemblages III and IV are products of two late Pleistocene marine transgressions respectively. Assemblage III is the product of the latest Pleis- tocene transgression and indicates a large scale of transgression and a tidal flat- intertidal environment, whereas assemblage IV shows a relatively small scale of transgression and an increase in continental factors and indicates a river mouth- supratidal or paralic environment. |
| Keywords: | Laizhou Bay ostracod foraminifera fossil assemblage sedimentary environment Quaternary |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《地质通报》浏览原始摘要信息 | |
| 点击此处可从《地质通报》下载免费的PDF全文 | |