Evolution of the Qin Mountains as part of the supercontinent Rodinia



The Qinling-Dabie orogenic complex, part of a large east-west mountain range in the heart of China, plays a key role in helping scientists understand the formation and breakup of the supercontinent Rodinia, but the exact configuration and geodynamic history of the Qinling-Dabie orogenic complex and the surrounding region are not fully known. Contributing a piece to the puzzle, Bader et al. use uranium-thorium-lead geochronology—both from published studies and new data—to investigate the Neoproterozoic (1 billion years ago to 700 million years ago) evolution of the Qinling-Dabie orogenic collage. The authors outline a tectonic model for evolution of this orogen, placing it into the context of the evolution of Rodinia, which formed around 1 billion years ago and broke up around 700 million years ago. Their synthesis could help researchers gain a more complete understanding of the geologic history of one of Earth's supercontinents. (Tectonics, doi:10.1002/tect.20024, 2013)