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通过云南中部禄丰地区侏罗系磁性地层学研究,建立了滇中侏罗系磁极性地层柱,为国内及该地区侏罗系地层单元的时代划分与对比提供了基础资料。依据磁性地层学研究的结果,修订了滇中侏罗系的顶界和上、中侏罗统的界线,建立了中、下侏罗统和侏罗系—三叠系界线数据。经对比发现,滇中侏罗系古地磁极与扬子地块侏罗系古地磁参考极之间有较大差异,反映滇中地块自侏罗纪以来曾向南发生了明显移动,产生过顺时针旋转。
Through the study of Jurassic magnetic stratigraphy in Lufeng area in central Yunnan, the Jurassic magnetic polarity stratigraphic column was established, which provided the basic data for the division and contrast of the Jurassic stratigraphic units in the area and in this area. Based on the results of the magnetic stratigraphic study, the boundaries of the Jurassic top boundary and upper and middle Jurassic in central Yunnan are revised and the data of the Middle-Lower Jurassic and Jurassic-Triassic boundaries are established. The comparison shows that there is a big difference between the Jurassic paleomagnetic pole in the middle of Yunnan and that of the Jurassic paleomagnetism in the Yangtze block, reflecting that the central Yunnan block has moved southward significantly since the Jurassic and produced a clockwise Rotate.