【作者】 张惠民； 张文治； D.P.Elston；

【Author】 Zhang Huimin Zhang Wenzhi (Tianjin Institute of Geology and Mineral Resources) Elston,D.P. (U.S.Geological Survey, Flagstaff,Arizona)

【机构】 天津地质矿产研究所； U.S.Geological Survey；

【摘要】 从打鼓石群、花山群和震旦系的岩石中取样200余个,获得6个基准值,按地层顺序连接,可构成一个由南向北的运移轨迹。通过微地块之间的相对转动,可使这个极轨迹与华南古生代的极衔接,从而构成较完整的视极轨迹。应用极和极轨迹与华北蓟县、华南、江南地体和澳大利亚大陆晚元古代的极和极轨迹进行对比讨论。结果表明,与华北蓟县、江南地体不能对比,而与澳洲大陆的极和极轨迹有较多的共同之处。这意味着在晚元古代到寒武纪早期,两大陆块相互靠近,关系密切。更多还原

【Abstract】 More than 200 rock-samples have been collected from Middle and Late Proterozoic Dagushi and Huashan groups,and Sinian System,6 anchoring poles have been obtained mainly from red beds.A simple apparent polar wander(APW) path was aquired by connection these anchoring poles according to the stratigraphical succession of Changhe section.The APW path seated among 225°E to 195°E and 30°N to 45°S of eastern Pacific Ocean,and it is closed to the poles from Late Sinian System of Yangzi Gorges section,so the path can be linked up with Palaeozoic polar path of the South China by turning the microplates relatively each other.Thus,the complete APW path for Late Proterozoic to Palaeozoic time can be established. In this paper,correlation and comparison of poles and APW paths have been disccussed between Yangzi Block and North China Block,and Jiangnan Terrain and Australian continent during the Late Proterozoic time.As a result of which indicate that poles and APW paths from Jixian section of North China Block,and Jiangnan Terrain are obviously different.It appeares that the plates for these areas are not coupled and behaved independently of one another,during Late Proterozoic time.However,the poles and APW paths of Yangzi Block and Australian continent both have relatively more similarity.This could suggest that the both continental blocks were relatively near and had closed relationship one another during the Proterozoic to Early Cambrian time.更多还原