regional metamorphism

Through analysis of Hegang coalfield regional stratigraphy, structure and magmatic activity patterns, the paper expounded that the coal metamorphism in the area is mainly regional metamorphism, locally some contact metamorphism.

通过对鹤岗煤田区域地层、区域构造、岩浆活动规律的分析研究，阐述了鹤岗煤田煤变质作用以区域变质作用为主，局部出现接触变质作用。

Types of metamorphic rocks: regional metamorphism, contact metamorphism and dynamic metamorphism.

变质岩类型: 区域变质 、 接触变质和动力变质.

The whole process of metamorphism can be divided into three parts: spilitization metamorphism of mid low pressure in extension situation → regional metamorphism of mid high pressure in compressional structure → metamorphism of high pressure glaucophane greenschist facies in partial areas.

变质作用过程可分为三个阶段：拉张环境中的中低压细碧岩化变质作用→挤压造山环境的中高压区域变质作用→局部地区的高压蓝闪石绿片岩相变质作用。

And the cause of the gradual increase in the metamorphic degree from the east to the west, besides being influenced by the regional metamorphism, is chiefly influenced by high temperature and high thermal current formed in Tancheng-Lujiang fracture zone to the west of the coalfield.

而由东到西变质程度逐渐增高的原因，除了受区域变质影响外，更主要的原因是受位于煤田西邻的郯庐断裂带所形成的高温、高热流的影响。

The middle Proterozoic crystalline schist series in the Panzhihua-Xichang region has undergone progressive regional metamorphism.

攀西中元古结晶片岩系遭受了前进区域变质作用。

Through an integrated analysis of the types of tectonic deformation and metamorphism, order of their formation, emplacement of plutons and isotopic age data, this paper discusses the regional distribution and formation ages of metamorphic rocks and their role and significance in the process of crustal evolution.

通过对构造变形与变质特征、形成序次、深成岩侵位及同位素年龄资料的综合分析，阐明变质岩的区域分布和形成时代，及其在地壳演化中的作用和意义。

Theae are three metamorphic stages: regional metamorphism, faulting metamorphism, thermodynamic metamorphism.

其变质作用经历了区域变质、断裂变质和热动力变质三个阶段。

These characteristics are helpful to researching regional metamorphism, structures and the forming of mountains.

这对于研究区域变质作用、构造和山脉形成有鉴知与启迪的意义。

Detailed research suggests the following tectonic evolution model: Thermal metamorphism was related to intra island arc tension, while regional faulting metamorphism was caused by A type subduction in the process of collisional orogeny. Phenomenon

这一研究反映了哈尔里克泥盆纪火山岛弧经过了由拉伸作用到碰撞挤压造山引发的A型俯冲作用演变过程，并产生了上述相应的变质现象

The metallogenesis is close related with the Caledonian-Indosinian regional metamorphism.

加里东期~印支期区域变质作用与成矿密切相关.

The komatiite in this area is very similar to those in Archean greenstone belts abroad with respect ot the petrochemical composition, zoning, special spinifex texture, characteristics of regional metamorphism and ore potentiality.

与国外太古代绿岩带科马提岩对比，岩石化学成分、分带性、特有的鬣刺结构及区域变质特征、含矿性等方面亟相似。