Coal - bed gas is a very clean energy that is formed in the course of the formation and metamorphism of the coal.
煤层气是煤的生成和变质作用过程中形成的一种非常规清洁能源。
They are probably related to the subduction of the Paleo-Asia Oceanic plate, and their intrusion resulted in the contact metamorphism of the Majiajie Group.
它们的形成可能与晚古生代古亚洲洋的消减作用有关，该期花岗岩的就位导致马家街群发生了接触变质作用。
Its geology and geochemistry indicate that it was formed in three steps which are sedimentary and volcanic-exhalation, regional metamorphism and magmatic metallogenesis.
地质及地球化学特征分析表明，该矿床的形成过程可以总结为沉积-火山喷流沉积富集、区域变质富集和岩浆改造成矿等三个步骤。
Fluid released during the high pressure and ultrahigh pressure metamorphism plays an important role in the evolution of subducted slab and may connect directly with igneous activity in island arcs.
在高压超高压变质作用过程中所释放的流体对俯冲板块的演化起着重要作用，与岛弧岩浆活动有着直接联系。
The regional metamorphism made the gold activated.
区域变质作用使金活化。
Early Proterozoic high-pressure metamorphism in the Wutaishan.
五台山早元古代高压变质作用研究。
Burial metamorphism has been found in the Ordos basin of northern Shaanxi.
本文系统地研究了陕北鄂尔多斯盆地的埋藏变质作用。
Mn ores were concentrated through sedimentation, metamorphism and supergene enrichment.
锰矿的富集经历了沉积作用、变质作用和表生再富集作用。
Through late regional metamorphism, the phosphorite was turned into the apatite deposit.
经后期区域变质作用使磷块岩变质成磷灰岩矿床。
Dynamical metamorphism under greenschist facies is the condition of mineralizing enrichment.
绿片岩相以下的动力变质作用是矿化富集的条件。
Many references show that the water is indispensable to the ultrahigh-pressure metamorphism.
大量资料表明水参与了超高压变质作用过程。
The appearance of staurolite indicates that the metamorphism has reached the low amphibolite grade.
十字石的出现表明变质作用已达到低角闪岩相。
Almandine originated from regional metamorphism to which magmatic thermal metamorphism superimposed.
铁铝榴石属区域变质叠加热变质作用形成。
The regional migmatites were developed in the Yunkai Block on the basis of low pressure metamorphism.
云开地块区域混合岩是在低压变质作用基础上形成的。
The process of change from any previously existing rocks into metamorphic rocks is called metamorphism.
将原来岩石改变成为变质岩的这种作用称之为变质作用。
Before Later Proterozoic era, in this area more than two times of thermodynamic metamorphism took place.
在晚元古代以前该地区至少发生过两次热动力变质作用。
The metamorphism of the Xingdong Group may also have relation to the Early Caledonian tectonothermal events.
兴东群变质作用可能也与早古生代构造-热事件有关。
The ductile shear process is not only metamorphism and deformation but also an important mineralization process.
韧性剪切变质变形作用不但是变质变形作用过程，而且也是重要的成矿作用过程。
It is argued that further research on the very-low-grade metamorphism and metamorphic belts would be worthwhile.
强调指出进一步研究极低级变质作用和极低级变质带的必要性。
Owing to magma thermal metamorphism superimposing on the regional metamorphosis, the intensity of gas generation is higher.
在区域变质的背景上，叠加了岩浆热变质作用，生气强度大。
The research on lithosphere rheology and deformation and metamorphism is an important cut-in point of earth system science.
对地壳的流变特性和变质变形研究是当前地球系统科学研究的一个重要切入点。
Degree of metamorphism steps up along the strike from south to north, whereas steps up along the dip in company with depth.
在走向上煤的变质程度由南向北逐渐增高，在倾向上煤层随赋存深度的增大变质程度逐渐增高。
The dynamic metamorphism of disturbed coals and the effect of radical density on coal gas outburst prediction are discussed.
在实验基础上进一步探讨了构造煤的动力变质作用和自由基浓度在煤和瓦斯突出预测中的作用。
Very complex structures and characteristics of khondalite series were caused by poly phases of metamorphism and deformation.
由于多期强烈的变形变质作用，区内孔兹岩系的地层结构十分复杂。
This is a model of telemagmatic metamorphism and a character of coal metamorphism early-middle Jurassic in northwest of China.
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。
A coal system can be divided into substance source subsystem, accumulation subsystem and metamorphism system in temporal range.
含煤系统在时间上可以分为物质来源子系统、物质堆积子系统、埋藏变质子系统。
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。
Accessory minerals and retrograde fluids are main factors controlling the trace elemental behavior during retrograde metamorphism.
副矿物和退变质流体是控制退变质过程中微量元素行为的主要因素。
In this paper the pyrolysis of coals with different metamorphism is performed under inert gas ambience in a non-isothermal reactor.
本试验的目的是研究不同变质程度的煤在惰性气氛中的非等温热解。
In this paper the pyrolysis of coals with different metamorphism is performed under inert gas ambience in a non-isothermal reactor.
本试验的目的是研究不同变质程度的煤在惰性气氛中的非等温热解。
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