从晚古生代冰室到早中生代温室的气候转变:兼论东特提斯低纬区的沉积记录与响应

发布时间：2018-07-24 08:39

【摘要】：地球在晚古生代晚期—中生代早期经历最近一次从冰室到温室的气候转变,是理解未来地球冰川消融、全球变暖等气候转变的重要窗口。这一时期的沉积记录和气候模型研究揭示,冰川活动、大气pCO_2和气候状态间存在复杂的耦合和反馈机制,同时伴随发生陆表植被更替和生物迁移。随冰川消融、大气pCO_2升高和全球变暖,低纬大陆区干旱化趋势和季节性降雨增强,出现季风气候并在冰室之后的三叠纪温室盛行。华南和华北是位于东特提斯低纬区的主要大陆,其石炭—二叠系在沉积和生物特征上与Pangea超大陆西侧热带区差异显著,蕴含有丰富的深时气候变化信息。基于前人成果,在简述石炭—三叠纪全球气候变化的基础上,对东特提斯低纬区石炭—三叠纪沉积记录进行总结,阐明其深时古气候研究意义和研究前景。
[Abstract]:The climate change from the ice room to the greenhouse in the late Late Palaeozoic and early Mesozoic era is an important window to understand the climate change such as the melting of glaciers and global warming in the future. The sedimentary records and climate models of this period reveal that there is a complex coupling and inverse between the glacial activity, the large gas pCO_2 and the climate state. Feed mechanism, accompanied by land surface vegetation replacement and biological migration. With glacial ablation, the atmospheric pCO_2 rises and global warming, the low latitude continental region droughts and seasonal rainfall increases, the monsoon climate and the Permo Triassic greenhouse after the ice room prevail. Southern China and North China are the main continent in the low latitude region of East Tethys and its Carboniferous The difference between the Permian and the tropical zone of the western side of the Pangea supercontinent is significant in the Permian. Based on the previous results, the Carboniferous Triassic sedimentary records in the low latitude region of East Tethys are summarized on the basis of the previous achievements. The significance and research prospect.
【作者单位】：中国地质大学(武汉)生物地质与环境地质国家重点实验室;
【基金】：国家自然科学基金项目(41472087,41572078) 中央高校基本科研业务费专项资金(CUG160604)~~
【分类号】：P532

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