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据３３３个白云母ｂ０值，结合区域地层和构造的研究成果，提出：（１）原称昌宁－孟连变质带解体为西盟－勐统变质带（加里东期中压变质带）和澜沧双变质带的高压亚带，两期高压变质作用分别与海西－印支期的洋壳消减和陆－陆碰撞有关；（２）石鼓变质带是三个逆冲岩片的叠置，各岩片内岩石的变质作用各具特色；（３）金沙江洋盆为地块间小洋盆，其消减及嗣后的弧－弧碰撞可能不产生高压变质作用。在此基础上探讨了白云母ｂ０值在造山带研究中的意义。
According to the b0 values of 333 muscovites, the authors put forward: (1) The disintegration of the Changning-Menglian metamorphic belt was originally called the Western He-Mengfeng metamorphic belt (Caledonian medium-pressure metamorphic belt) and Lan The high-pressure sub-zone and high-pressure metamorphism of Cangshuang metamorphism are respectively related to the Hercynian-Indosinian oceanic crust subsidence and land-continent collision. (2) The Shigu metamorphic belt is a superposition of three thrusts, The metamorphism of rocks in each lithofacies has its own characteristics. (3) The Jinshajiang ocean basin is a small oceanic basin between plots. Its reduction and consequent arc-arc collision may not produce high-pressure metamorphism. On this basis, we discuss the significance of b0 value of muscovite in the study of orogenic belt.