Compilation of Results from Excavation of Tertiary Fossil Forests of the Canadian Arctic Archipelago

加拿大北极群岛第三纪化石森林发掘结果汇编

基本信息

批准号：
06041052
负责人：
SWEDA Tatsuo
金额：
$ 3.26万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1994
资助国家：
日本
起止时间：
1994 至无数据
项目状态：
已结题

项目摘要

Palaeobotanical, palaeoclimatic and palaeoenvironmental data and findings resulting from the 1991-1992 field research in Axl Heiberg Island and Ellesmere Island, Canadian Arctic Archipelago and supported by the Ministry of Education, Science and Culture Grant-in-Aid for International Scientific Research program were compiled in a report.The collection from the field work and compiled and analyzed in the present work include materials primarily consisting of fossil plants, geological and geographical data consisting of stratigraphy and topographic surveying and such biological data as measurements of stump size, location etc. First of all in this work, such micro fossils as leaves and corns as well as such mega fossils as tree trunks and stumps were identified to reconstruct species composition of the fossil forests. Secondly, the biological data were analyzed and compiled into such forest stand characteristics as stem density, tree size distribution, stand biomass etc., which make a comparison of the fossils forests with the present-day counterpart possible, which in turn lead to palaeoclimatic inferences. Lastly the results from the topographic surveying were compiled into several maps with geological interpretation. These results in three differentcategories were further integrated into the reconstruction of the warm and moist palaeoclimate of Tertiary and the sedimental environment of the time in which these fossil forests grew, buried and preserved. The most significant results from this work was that these fossil forests provide superb natural analogue to the impending global warming in which the globe would be as warm as Tertiary.

汇编了 1991-1992 年在加拿大北极群岛 Axl Heiberg 岛和埃尔斯米尔岛进行实地研究并得到教育、科学和文化部国际科学研究资助计划支持的古植物学、古气候和古环境数据和发现在一份报告中。本工作中收集和整理和分析的实地工作资料包括主要由化石植物组成的材料、由地层学组成的地质和地理数据地形测量以及树桩大小、位置等生物数据的测量。本工作首先鉴定了树叶、玉米等微型化石以及树干、树桩等巨型化石，以重建化石的物种组成森林。其次，对生物数据进行分析并整理成林分特征，如树干密度、树木尺寸分布、林分生物量等，从而可以将化石森林与现今的对应森林进行比较，从而得出古气候推断。最后，地形测量的结果被编制成几张带有地质解释的地图。这些三个不同类别的结果进一步融入到第三纪温暖湿润的古气候以及化石森林生长、埋藏和保存时期的沉积环境的重建中。这项工作最重要的结果是，这些化石森林为即将到来的全球变暖提供了极好的自然模拟，在这种情况下，地球将像第三纪一样温暖。