supported by the National Basic Research Programof China(2009CB219305);the National Natural Science Foundation of China(41072106)
A group of NE-trending(~30°)mafic dykes,termed Miyun swarm herein,are distributed around the Miyun Reservoir,northe China,and have individual widths of over 40 m,and lengths of up to 8000 m.Baddeleyite grains were e...