区域变质作用

蓟县纪晚期，区域变质作用为成矿奠定了基础；

Regional metamorphism was gold forming foundation during late Jixian period .

区域变质作用使金活化。

The regional metamorphism made the gold activated .

雪峰隆起北部板溪群板岩伊利石X射线衍射分析显示其经历了低绿片岩相区域变质作用。

XRD analysis of the Banxi Group slate in the northern Xuefeng Uplift suggest a lower greenschist facies metamorphism .

区域变质作用P-T变化集中在T：180～200oC，P：1～2kbar（<0.2Gpa）。

Territorial metamorphism P-T change focus on T : 180 ~ 200oC , P : 1 ~ 2kbar ( < 0.2 Gpa ) .

加里东期~支期区域变质作用与成矿密切相关。

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

区域变质作用中的流体

The role of fluid flow during regional metamorphism

石墨是区域变质作用的产物。

Graphite results from regional metamorphism .

攀西中元古结晶片岩系遭受了前进区域变质作用。

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

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。

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

三水铝石经区域变质作用脱水而成；我国三水铝土矿资源的综合利用研究

By dehydration of gibbsite during the regional metamorphism ; STUDY ON MULTIPURPOSE UTILIZATION OF GIBBSITE IN CHINA

不同级别的区域变质作用中，流体影响着岩石的变质反应和变形；

Mobile fluids play an essential role in rock deformation and metamorphic reactions during the various grades of metamorphism .

通过对夕卡岩地质特征、岩石化学特征、稀土元素地球化学特征和成岩年龄的分析研究，证明了夕卡岩是区域变质作用的产物。

Based on its geology , petrochemistry , age , and REE geochemistry , the skarn is the product of regional metamorphism .

狼山群第1岩组混合岩的产生可能是火山活动的结果，而不是断裂活动或区域变质作用的结果。

The mixed rock occurring in the first formation of the Langshan Group is probably the result of volcanic activity rather than that of faulting or metamorphism .

通过传热数值模拟分析了区域变质作用对北京西山房山侵入体冷却的影响。

By means of numerical simulation , the impact of regional metamorphism on the cooling of the Fangshan intrusive body in Western Hill of Beijing is studied .

认为区内铁矿床的形成主要经历了沉积成矿阶段、区域变质作用改造阶段和岩浆热液作用改造阶段。

Process of forming iron deposits in here has been through the sedimentary mineralization period , the reformation period of regional metamorphism , and the reformation period of magmatic hydrothermalism .

新疆阿尔泰海西造山带主要发育两期区域变质作用。大别造山带构造归属：海西期以来地幔化学成分特征证据

The Altai Hercynian orogenic belt in northern Xinjiang has experienced two stages ( regional ) metamorphism . Tectonic Subdivision of Dabie Orogenic Belt , Central China : Evidence from Geochemical Characteristics of Mantle-Derived Rocks Since the Hercynian

该地区地壳演化复杂，其构造环境尚且存在争议；并且矿床遭受后期区域变质作用强烈，其矿床成因不清严重制约后期找矿。

The crustal evolution of this region is complex . The tectonic setting is still controversial . The deposit is intensely subjected to the regional metamorphism , which makes the deposit genesis unclear and the prospecting difficult .

其中，磁铁矿主要形成于沉积成矿阶段，后期的区域变质作用和岩浆热液作用主要对沉积形成的层状磁铁矿体的局部进行叠加改造，但影响较为有限。

Magnetite is formed in the the sedimentary mineralization period . The period of regional metamorphism and magmatic hydrothermalism mainly worked on the superimposed reformation part for the layered magnetite orebodies of deposition , but the influence is also limited . 6 .

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。

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 .

对矿床矿化期、矿化阶段进行划分，并强调其热液改造期分为两个阶段，即区域变质作用早期的改造和构造热液的强烈改造，后者是矿床的主要富集成矿期。

The mineralization periods and mineralization stages are classified , and two stages in hydrothermal reformation period is stressed , i.e. the reformation in the early stage of regional metamorphism and the intensive structure - hydrothermal reformation , the latter was the main stage of the deposit enrichment .

麻粒岩相是中压区域高温变质作用的产物，变质作用的演化为退变质、近等压冷却（IBC）反时针型的PTt轨迹。

The granulite facies were resulted from the regional high-temperature metamorphism with medium pressure . The metamorphism evolution was the retrogressive metamorphism with approximate isobaric cooling ( IBC ) and counter clockwise PTt path .

角闪岩相变质后续有重熔型混合岩化。五台&吕梁期变质尾声又叠加区域动力变质作用。

It was found that the amphibolite facies metamorphism occurred before the remelting type migmatization and that the regional dynamometamorphism arose in the end of the Wutai Luliang Stage metamorphism .

江西区域变质岩及其变质作用

Regional metamorphic rocks and their metamorphism in Jiangxi

并认为区域极低级变质作用主要源于印支造山前的成岩（埋藏）变质作用。

And the extremely weak regional metamorphism should be pre-Indosinian diagenic ( burial ) metamorphism .

湘中龙潭组煤的区域岩浆热变质作用的探讨

On the reginal thermometamorphism of coal of Longtan coal series in the middle Hunan Province caused by igneous magma

属于区域岩浆热变质作用的一种模式，也是西北地区早中侏罗世煤变质的特点之一。

This is a model of telemagmatic metamorphism and a character of coal metamorphism early-middle Jurassic in northwest of China .

变质作用类型以区域性动力变质作用为主，局部地段受岩浆活动的影响，显示了区域动热力变质作用的特点。

The types of metamorphism are mainly regional dynamometamorphism . Some of strata made a feature of regional dynamothermal metamorphism under the influence of magmatic activity .

因主要经受中晚元古期中压区域动力热流变质作用，形成自南向北递增变质带，即低绿片岩相高绿片岩相低角闪岩相。

During the middle-later Proterozoic , regional dynamothermal metamorphism formed a northward progressive metamorphic zone , such as lower greenschist facies higher greenschist facies lower amphibolite facies .

川西高原广泛分布的西康群，原视为区域低温动力变质作用低绿片岩相变质岩。

Xikang Group is widely exposed on the West Sichuan Plateau and was considered to be a low greenschist facies metamorphic rock due to regional low-temperature dynamometamorphism .

燕山期区域岩浆热变质作用是煤变质规律的主要控制因素，其中，汽水热液变质作用又处主导地位。

Regional magmatic thermal metamorphism of Yanshan stage is main controlled factors of coal metamorphic law , and the vapor - water hydrothermal metamorphism play a leading role .