黄河源区早更新世含植物化石地层的发现及意义
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

中国地质调查局地质大调查项目(19991230004121)资助。


Discovery of early Pleistocene strata containing plants fossils in the source area of the Yellow River and significance
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    提要:通过对扎根加陇早更新世湖相地层(1 919.6 ka B.P.)、棒咯涌K5号钻孔早更新世河湖相地层(1 135.9~945.4 kaB.P.)、野牛河西岸早更新世河湖相地层(1 548.2~765.4 ka B.P.)以及产于扎根加陇早更新世湖相地层中的植物化石、各剖面孢粉资料的分析,获知黄河源区早更新世早期为亚热带山地针叶林植被景观,地层中木本植物花粉占绝对优势,以针叶植物云杉属、松属、冷杉属、铁杉属为主,是源区动植物发育的鼎盛时期;进入早更新世晚期初,乔木植物花粉迅速减少乃至全部消失,草本植物花粉大幅度增加。晚期末,孢粉出现贫化,以草本植物花粉为主,呈现荒漠草原植被景观。提出了现今黄河源区生态地质环境的形成是地质演化的必然结果。

    Abstract:

    Abstract:The authors analyzed early Pleistocene lacustrine strata at Zhagenjialong (1919.6 ka B.P.), in borehole K5 (1135.9 945.4 ka B.P.) and on the west bank of the Yeniu River (1548.2-765.4 ka B.P.) and fossil plants and sporopollen data in various section in early Pleistocene lacustrine strata at Zhagenjialong. The analytic results show that in the early part of the early Pleistocene there occurred a subtropical hilly coniferous forest vegetation landscape in the source area of the Yellow River, and that in the strata woody plants predominate, mainly including needle leaf plants such as Picea, Pinus, Abies and Tsuga, indicating a flourishing period of animal and plant growth in the source area. At the beginning of the late Early Pleistocene, pollen of arborous plants was rapidly reduced and even all disappeared, and pollen of herbaceous plants increased significantly. At the end of the late part, sporopollen was diluted, with pollen of herbaceous plants predominating, showing a landscape of desert steppe vegetation. The formation of the present eco-geological environment in the source area of the Yellow River is the inevitable result of geological evolution.

    参考文献
    相似文献
    引证文献
引用本文

张森琦 王永贵 辛元红 赵 越 李永国 王占昌 石维栋 尚小刚. 黄河源区早更新世含植物化石地层的发现及意义[J]. 中国地质, 2006, 33(1): 78-85.
ZHANG Sen-qi, WANG Yong-gui, XIN Yuan-hong, ZHAO Yue, LI Yong-guo, WANG Zhan-chang, SHI Wei-dong, SHANG Xiao-gang. Discovery of early Pleistocene strata containing plants fossils in the source area of the Yellow River and significance[J]. Geology in China, 2006, 33(1): 78-85(in Chinese with English abstract).

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2013-04-11
  • 出版日期:
亮点文章推荐
古人云:工欲善其事,必先利其器。我国新一轮战略找矿行动已全面启动。用什么方法、什么手段实现增储上产是面临的突出问题。本刊登载了几篇基于新技术、新方法实现找矿突破的实例,供大家参阅,助力新一轮战略找矿目标的实现。
基于随机森林算法的找矿预测——以冈底斯成矿带西段斑岩—浅成低温热液型铜多金属矿为例. 欧阳渊等,2023, 50(2):303-330.
基于重磁资料在山东齐河—禹城探获矽卡岩型富铁矿:对超深覆盖区找矿的启示. 王润生等,2023, 50(2):331-346.
自然伽马曲线重构波阻抗反演在勘探含铀有利成矿砂体中的尝试. 梁建刚等,2023, 50(2):347-358.
宽频大地电磁法寻找“界面型”隐伏金矿床:以黔西南戈塘地区深部找矿为例. 张伟等,2023, 50(2):359-375.
页岩气基础地质调查钻井技术研究进展及展望. 赵洪波等,2023, 50(2):376-394.
关闭