摘要
本文将韧性剪切变质带按其形成地质背景划分为三个类型：（１）低温（浅层）韧性剪切变质带；（２）中温（中层）韧性剪切变质带；（３）高温（深层）韧性剪切变质带。哀牢山变质带中深变质杂岩区的主体属于中高温韧性剪切变质带，并有低中温韧性剪切变质带叠加。滇西其他地区如点苍山、高黎贡山、崇山、西盟及腾冲─瑞丽等地的中深变质杂岩区的基本地质特征与哀牢山变质带相近，因此，仍属于韧性剪切变质带，其类型划分与分布特征都与前者相似。本文提出韧性剪切变质岩石分类命名建议方案，根据滇西各韧性剪切变质带中的各类混合岩，绝大部分是构造片麻岩类，提出了两类岩石的对应名称。
The ductile shear metamorphic belt is divided into three zones according to their geological settings in this paper as follows.1. High T (katazone) ductile shear metamorphic zone;2. Medium T (mesozone) ductile shear metamorphic zone;3. Low T (epizone) ductile shear metamorphic zone.The mesozone-katazone metamorphic complex area of Ailao Mountains metamorphic belt mainly belongs to mediumhigh T ductile shear metamorphic zone. which has been superimposed by the low-medium T one. In other regions of West Yunnan such as Diancang Mountains, Gaoligong Mountains, Chong Mountains . Ximeng and TengchongRuili, etc, the basic geological characteristics of mesozone-katazone metamorphic complex area are similar to those of the Ailao Mountains metamorphic belt. Therefore, they belong to ductile shear metamorphic belt as well. And their calssification and distribution characteristics are similar to the former.A classification and nomenclature suggestion for ductile shear metamorphic rocks is put forward in this paper. Various migmaties in every ductile shear metamorphic belt of West Yunnan have mostly become mylonite or tectonic gneiss. The corresponding names of them are proposed in this paper.
出处
《云南地质》
1994年第4期371-378,共8页
Yunnan Geology
