Igneous and metamorphic rocks are more compact, commonly crystalline, and rarely contain spaces between grains.
火成岩和变质岩比较致密，通常是结晶性的，颗粒之间很少有空隙。
Some very ancient sediments were no longer recognizable, having been converted to igneous and metamorphic rocks in the course of mountain building.
在造山的过程中，一些非常古老的沉积物已被转化为火成岩和变质岩，已经无法辨认了。
However, even igneous and metamorphic rocks may act as groundwater reservoirs if extensive fracturing occurs in such rocks and if the fracture system is interconnected.
然而，如果火成岩和变质岩中发生大规模的断裂，并且断裂系统相互连通，那么它们也可以作为地下水储集层。
The evaluating method of metamorphic rocks.
变质岩潜山储层评价方法；
Precambrian metamorphic rocks constituted the basin basement.
盆地的基底是前寒武系变质岩。
Almost all kinds of metamorphic rocks can be discovered here.
变质岩几乎所有类型的小构造，在这里都找得到。
What kinds of regional metamorphic rocks are present in the area?
在这一地区有哪些种类的区域变质岩?。
Yunnan emerald deposit was found in (pre) Cambrian metamorphic rocks.
云南祖母绿矿床产于寒武系变质岩中。
The first type is residuals of metamorphic rocks of high amphibolite facies.
一类为属于高角闪岩相的变质岩（残余）包体；
They are important structural features in the Precambrian metamorphic rocks.
它是前寒武纪变质岩内一种重要的构造现象。
Even foliated metamorphic rocks and banded gabbro can BE curved to form folds.
即使变质岩中的片理以及辉长岩中的条带也可产生弯曲而形成褶皱。
Some examples of metamorphic rocks are gneiss, slate, marble, schist and quartzite.
在中级变质时形成云母片岩；在高级变质作用下形成片麻岩。
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 kinematics of Gangou ophiolitic mélange is consistent with that of Kekesu HP metamorphic rocks.
干沟-米什沟蛇绿混杂岩带的变形运动学与科克苏高压变质岩带变形特征完全一致。
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。
In this paper, the amphibolites in Chencai group metamorphic rocks have been studied by means of geochemistry.
本文对陈蔡群变质岩中的斜长用闪岩进行了地球化学研究。
The compositions and formation history of basement metamorphic rocks are the key to understanding crust evolution.
基底变质岩的成分和形成时代对揭示地壳演化至关重要。
In the Dabieshan area, the late Archaean metamorphic rocks, here termed as the Dabie Group, are complexly deformed.
大别山区晚太古代大别群变质岩系，经历了复杂的变形过程。
The Baoyintu Group in the Wulatehouqi, northwestern Inner Mongolia consists of amphibolite-facies metamorphic rocks.
内蒙古西北部的宝音图群由角闪岩相的变质地层组成。
High-pressure metamorphic rocks form during subduction of Earth's crust to mantle depths at convergent plate margins.
高压变质岩是在俯冲的过程中形成的，从地壳到地幔，深度不等的聚合板块边缘。
Hydrocarbons commonly occur in sedimentary basins and are absent from intervening areas of igneous and metamorphic rocks.
在沉积盆地中，碳氢化合物很常见，而在间杂的火成岩与变质岩中则找不到。
They are fault metamorphic rocks formed in thrusting nappe structure inside continental plate during Variscan-Indonian Stage.
它们是华力西—印支期板内逆冲推覆构造所形成的断裂变质岩。
Research on hook folds is conducive to restoration of folded form of large folds and original occurrence of metamorphic rocks.
对它的研究，有助于恢复大型褶皱形态和变质岩原岩产状。
The Hengshan high-grade metamorphic terrain is one of the typical areas for the study of Early Precambrian metamorphic rocks in China.
恒山高级变质岩区是中国早前寒武纪变质岩研究的经典地区之一。
Most metamorphic rocks have been greatly changed and deformed that any fossils preserved In the origInal rocks will not be recognizable.
绝大多数变质岩曾遭受过剧烈的变化和变形，任何在原岩中保存的化石将因这种后来的变化和变形而无法辨认。
According to this "astronomical model", the ultrahigh pressure metamorphic rocks record three phases of formation, return and exhumation.
该“天文模式”认为超高压变质杂岩分形成、折返和剥露三个阶段形成。
Metamorphic rocks form from the alteration of preexisting rocks by changes in ambient temperature, pressure, volatile content, or all of these.
变质岩是由先存岩石在周围温度、压力、挥发物含量、或所有上述因素都变化而发生蚀变而形成的。
The characteristics of the gold mineral are similar to those deposits in the metamorphic rocks of Archean greenstone belt in the eastern China.
上述特点与我国东部地区产于太古宙变质岩(绿岩带)中的金矿床具有可对比性，也与矿床成因研究的认识相吻合。
The characteristics of the gold mineral are similar to those deposits in the metamorphic rocks of Archean greenstone belt in the eastern China.
上述特点与我国东部地区产于太古宙变质岩(绿岩带)中的金矿床具有可对比性，也与矿床成因研究的认识相吻合。
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