节点文献
二叠-三叠纪生物绝灭事件的地球化学研究新进展
ADVANCES IN GEOCHEMICAL STUDIES OF PERMIAN/TRIASSIC MASS EXTINCTION
【摘要】 二叠-三叠纪生物绝灭事件在地史发展中有着重要作用,灭绝加速了物种的进化和更替。本文简要总结了近几年来全球地球化学、地质和古生物等学者关于P-T生物绝灭事件的研究,包括事件的测年研究进展和事件原因的种种学说,其中详细阐述了地外碰撞(小行星或彗星)、火山学说、缺氧学说以及海洋酸性化假设的研究进展,并对该绝灭事件研究意义进行了简单的分析和探讨。
【Abstract】 The Permian/Triassic mass extinction plays a great role in the evolutionary history of the Earth.After that,the revolution of species was accelerated greatly.The paper summarizes simply the research results of geochemists,geologists and paleontologists in recent years,including dating of the event and several hypotheses.Especially,we described in detail the exterrestrial impact(asteroid or comet),volcanic eruption,anoxia and marine acidification,and then made a simple analysis and discussion in the significance of mass extinction.
【关键词】 二叠-三叠;
生物绝灭;
碰撞;
火山喷发;
缺氧;
【Key words】 Permian/Triassic; mass extinction; impact; volcanic eruption; anoxia;
【Key words】 Permian/Triassic; mass extinction; impact; volcanic eruption; anoxia;
【基金】 国家自然科学基金(40572020、40232025);教育部博士点基金(20040290005)
- 【文献出处】 地球与环境 ,Earth and Environment , 编辑部邮箱 ,2006年02期
- 【分类号】P534.46;P534.51
- 【被引频次】5
- 【下载频次】685