A study led by Prof. Yong-Fei Zheng at University of Science and Technology of China focused on the development of tectonic processes along convergent plate margins through inspection of recent ...
The oldest blueschists—metamorphic rocks formed during subduction—are of Neoproterozoic age 1, and 0.7–0.8 billion years old. Yet, subduction of oceanic crust to mantle depths is thought to have ...