辽东湾北部LH01孔晚更新世以来的元素地层

徐元芹; 李萍; 李培英

doi:10.3724/SP.J.1140.2014.02061

辽东湾北部LH01孔晚更新世以来的元素地层

国家海洋局第一海洋研究所, 青岛 266061

基金项目:

中央级公益科研院所基本研究基金项目——辽东湾北部晚第四纪环境演变与特殊沉积事件研究(2011G16)

详细信息

作者简介:
徐元芹(1982-),女,博士,主要从事海洋地质研究,E-mail:xuyuanqin03@126.com

中图分类号: P736.4
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出版历程
- 收稿日期: 2013-01-14
- 修回日期: 2013-03-08

THE ELEMENT STRATIGRAPHY OF CORE LH01 IN THE NORTH OF LIAODONG BAY SINCE LATE PLEISTOCENE

First Institute of Oceanography, State Oceanic Administration, Qingdao 266061

摘要

摘要: 在辽东湾北部的LH01孔岩心进行高分辨率取样的基础上,测定了沉积物中的14个地球化学指标。通过对各元素与Al₂O₃含量的比值、特征元素比值在岩心中的垂向变化规律的分析,结合粒度、测年和R型因子分析方法,可将岩心至上而下划分为4层,分别反映了4种沉积环境:100~889 cm为全新世河口滨海现代沉积,889~1 330 cm为全新世中期浅海沉积,1 330~1 913 cm为全新世早期海陆交互相沉积,1 913~2 455 cm为晚更新世末期的陆相沉积。化学元素的变化所反映的地层特征与晚更新世以来的气候和海平面变化具有较好的对应关系。
- 元素地层 /
- 晚更新世 /
- 辽东湾北部
Abstract: 14 geochemical index of sediment were analysed for the samples of Core LH01 obtained in the north of Liaodong Bay. According to the interpretation of vertical changes based on the ratio of elements to Al₂O₃, the ratio of characteristic elements, and grain size, combined with dating and R-mode factor analysis, the core can be divided into 4 layers, reflecting 4 kinds of sedimentary environment, respectively. From 100-889 cm, it is the Late Holocene estuarine coastal deposits; from 889-1 330 cm, the neritic sediment of middle Holocene; from 1 330-1 913 cm, the transitional deposits of early Holocene; and from 1 913-2 455 cm, terrestrial deposits of late Pleistocene. The stratigraphic features reflected by the changes in chemical elements are correlated well with climatic and sea-level changes since Late Pleistocene.
- elemental stratigraphy /
- the north of Liaodong Bay /
- Late Pleistocene

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参考文献(23)

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