Retrogressive Microstructures: A Key to Post- collisional uplift and Extension Tectonics of Ultrahigh-Pressure Metamorphic Rocks From Dabie Orogenic Belt, China

摘要

A wealth of retrogressive microstructures have been discovered from the UHP metamorphic rocks in Dabie orogenic belt, namely, the ultrahigh-pressure (UHP) eclogites, jadeite quartzites and kyanite-quartz vein. The most important are pseudomorphic replacements of UHP min- erals like coesite, the corona reaction textures induced by solid-solid reactions as well as the corona and symplectites induced by reactions involving fluid.