石炭纪以来地磁场倒转速率与地球动力学

本文在地磁极性年表、磁性地层学基础上分析地磁场倒转速率自石炭纪以来的变化特征与地核／下地幔耦合关系,并吸收前人有洋直极移方面的研究成果,进一步讨论地磁场倒转速率、真极移速率、下／上地幔对流以及岩石圈这过程的关系,以及与东亚岩石圈动力学过程可能存在的联系。

GEOMAGNETIC REVERSAL FREQUENCY SINCE THE CARBONIFEROUS AND THE GEODYNAMICS

On the basis of the magnetic time scale and magnetostratigraphic results,the relationship between changes of the magnetic reversal frequency and core/mantle coupling,especially the episodic evolutions of the D" layer since the Carboniferous, was analysed. The episodic geomagnetic reversal friquencies and the true polar wander could correlate with lower/upper mantle convection and lithospheric dynamics. Tentative correlation between the breakup of the Pangea and the Mesozoic lithospheric geodynamic evolution of eastern Asia was discussed.