山东青岛和日照滨岸潮间带现代生物遗迹组成与分布特征

发布时间：2018-03-08 11:10

本文选题：青岛　切入点：日照　出处：《古地理学报》2017年04期 　论文类型：期刊论文

【摘要】：在山东青岛和日照滨岸潮间带可见到现代生物营造的各种遗迹。通过分析这些生物遗迹与其沉积背景的关系,取得以下成果:(1)研究区生物遗迹中,层面遗迹以腹足类动物的拖迹为主,层内遗迹以居住迹丰度最高,且类型多样。(2)建立了2个生物遗迹组合:一是高潮区组合,主要遗迹类型包括珠带拟蟹守螺拖迹、沙蚕的拖迹、摄食迹和居住迹、四角蛤的居住迹、弹涂鱼的爬行迹和居住迹、鸭嘴海豆芽的居住迹以及螃蟹的居住迹和摄食迹;该组合产生的沉积物底层具有含泥量较高,水、氧、有机质含量均较丰富及基底较稳固等特点。二是中低潮区组合,主要由斑玉螺的拖迹和停息迹、扁玉螺的爬行迹和停息迹、寄居蟹的爬行迹、长竹蛏的居住迹、虾蛄的爬行迹和居住迹、鸭嘴海豆芽的居住迹以及螃蟹的居住迹和摄食迹组成;该组合产生的沉积物底层具有含泥量较低、粒度较粗、间隙水不易保存、有机质含量低等特点;研究区潮间带为急剧多变的海洋环境,该遗迹组合可指示温带季风气候条件下的海洋潮间带沉积环境。(3)通过分析各种造迹生物及其遗迹的组成和空间分布特征以及其与底层沉积物和沉积环境的关系,建立了研究区潮间带沉积中的生物遗迹组合及其沉积环境分布模式。
[Abstract]:Various traces of modern organisms can be seen in Qingdao and Rizhao intertidal zones in Shandong Province. By analyzing the relationship between these biological relics and their sedimentary background, the following results have been obtained: 1) in the biological remains of the research area. Two bioremediation assemblages were established: one was the assemblage of orgasm, and the other was the main relic type, which included the snail tracts in the bead belt and the crab in the bead belt, and there were two bioremediation assemblages in the stratified trace, which were mainly gastropods, and the most abundant in the layer was the residential trace, with various types. The drag, feeding and dwelling tracks of the silkworm, the dwelling tracks of the clam, the creeping and living tracks of the marsupials, the residential tracks of the sprouts of the duck bill and the crabs, and the bottom layers of the sediments produced by the combination have a high content of mud and water, The other is the assemblage of the middle and low tide zone, which is mainly composed of the trailing and stopping tracks, the creeping and stopping tracks, the crawling tracks of the hermit crabs, the dwelling tracks of the clam clam, and so on. The composition of crawling and living track of Oratosquilla, living track of sprouts in duck bill, and dwelling track and feeding track of crab, the bottom layer of sediment produced by this combination has the characteristics of low content of mud, coarse grain size, difficult preservation of interstitial water, low content of organic matter, and so on. The intertidal zone of the study area is a rapidly changing marine environment. The relic assemblage can indicate the marine intertidal sedimentary environment under the temperate monsoon climate. By analyzing the composition and spatial distribution of various trace organisms and their traces, and their relationship with the bottom sediments and sedimentary environments, The bioremediation of intertidal sediments in the study area and its sedimentary environment distribution model have been established.
【作者单位】：河南理工大学资源环境学院;河南省生物遗迹与成矿过程重点实验室;
【基金】：国家自然科学基金项目(编号:41272117,41102002) 海洋地质国家重点实验室开放基金资助项目(编号:MGK1409)共同资助~~
【分类号】：Q911

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