<正>During the past decade,generations of Precambrian mafic dykes/sills have been investigated and revealed in the North China Craton(NCC).Researchers identifie
<正>Objective There has been considerable debate about the definition of the lower boundary of Nanhua System by far.One definition is based on sedimentary seque
<正>With the global rise of industries of the new-generation information technology,energy conservation and environmental protection,biotechnology,high-end manu