应中国科学院青藏高原研究所邀请，我所科学院“爱因斯坦讲席教授”、美国密西根大学教授，荷兰皇家科学院院士，美国地质学会前主席，国际古地磁和大地构造领域最著名科学家， 地球科学本杰明×富兰克林奖章获得者，Rob Van der Voo教授前来我所访问并做报告。
报告题目：Linking Deep Mantle Processes with Surface Plate Motion（链接地表板块运动与地幔深部过程）
时 间：2012年5月31日下午2：00
地 点：青藏高原研究所所912会议室（新楼）
Rob Van der Voo教授简介：
http://www.lsa.umich.edu/UMICH/earth/Home/People/CVs/VanderVoo_CV_Nov2010.pdf
Abstract(摘要)：
After a review of upper mantle features and how they relate to surface plate tectonics, special attention is given to the deeper mantle. Major upwelling patterns, departing from the edges of two antipodal LLSVPs (Large Low Shearwave Velocity Provinces), are associated with hotspot and plume features that leave their signatures as Large Igneous Provinces (LIPs) in the Earth’s crust. Torsvik et al. (Nature Geoscience 466, July 15, 2010) have demonstrated that 80% of all diamondiferous kimberlites with ages of 320 - 0 Ma are also found above the edges of the LLSVPs, with the continental positions being fully constrained in a lower-mantle framework by paleomagnetic data, LIPs, True Polar Wander episodes, and seismic velocity anomalies from tomography. For the Paleozoic Era before 320 Ma, the continental positions have until now remained unconstrained in longitude, as is well known for paleomagnetic results, whereas LIPS, TPW and tomography are of little or no help. However, using the assumption that kimberlites with ages of 540 – 320 Ma must have originated above the edges of the LLSVPs, one can constrain continental paleolongitudes in the Paleozoic. In so doing, we obtain global reconstructions that are of great interest for paleogeography, paleoclimate models and tectonic analysis of Paleozoic plate motions.
