以低级变质作用为特征的蓝片岩(包括蓝闪片岩、低温榴辉岩和某些绿色岩),自60年代初板块构造问世以来已在世界范围内得到广泛的研究,美国的 Franciscan 地体、日本的Sanbagawa 带、新西兰的 Otago 片岩、新喀里多尼亚 Ouegoa 等地区被认为是最典型的蓝片岩。野外,除观察到以蛇绿岩混杂体产出的蓝片岩外,还能分辨出变质作用的粗略分带。如 Blue rocks (including blue flash schist, low-temperature eclogites and some green rocks) characterized by low-grade metamorphism have been extensively studied in the world since the advent of plate tectonics in the early 1960s. The Franciscan terrane in the United States, The Sanbagawa belt in Japan, Otago schist in New Zealand and Ouegoa in New Caledonia are considered to be the most typical blue schist. In the wild, in addition to the blue-lithofacies produced from ophiolite mixed bodies, a rough zonation of metamorphism can be distinguished. Such as