月球的不对称结构和演化

张南

北京大学

2021.03.19 （星期五）15:00，理科二号楼2821

摘要：

地-月系统的动力学机制与过程是了解太阳系类地行星演化的重要窗口，而月球的早期演化提供了地球起源演化的新的观测和指示。月球地表正-背面的不对称性是目前月球最明显的结构。这种不对称，表现在月球正面呈低地、背面呈高地；正面广泛分布月海玄武岩，背面只分布古老的斜长岩；正面富集生热元素和钛铁矿，背面几乎没有发现。大陨石撞击、月地潮汐、和重力驱动行星对流被用于测试和解释月球早期动力演化过程。解析解和数值模型联合解释了生热元素和钛铁矿在近地面富集和斜长岩在远地面富集。其中大陨石撞击应该是生热元素和钛铁矿分布的驱动因素，而月地潮汐可能是引起斜长岩在远地面富集的控制因素。

报告人简介：

NAN ZHANG

Education:

B.S., September 2001. Department of Geology, Peking University, China.

M.Sc., December 2004. Department of Geophysics, Peking University, China.

M.Sc., December 2006. Department of Geology, University of Toronto, Canada.

Ph.D., May 2011. Department of Physics, University of Colorado at Boulder, USA.

Professional Affiliation/Experience:

2016-Present, Assistant Professor, School of Earth & Space Science, Peking University

2015-2018, ACTOR Research Fellow, Applied Geology, Curtin University

2013-2015, Postdoctoral Investigator, Department of Geology & Geophysics, Woods Hole Oceanographic Institution

2011–2013. Research Associate, Department of Geological Sciences, Brown University

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