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。
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。
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。
Rather than matching the ages of the zircons, the researchers note, the ages of the inclusions matched the ages of the metamorphic minerals surrounding the zircons.
研究人员发现，这些包体的年代与锆石样本周围的变质矿物的年代相当，而与包裹它们的锆石样本年代不符。
Daniels says Western Australia's metamorphic rocks contain more iron than the igneous rocks on the east coast, making some of the beaches a more orangey-red colour.
丹尼尔说澳大利亚西海岸的变质岩比东海岸的岩浆岩含铁成分高，因此沙滩呈现橙红色。
Gneiss, a metamorphic rock, can be commonly found in Precambrian areas.
片麻岩，变质岩，可以发现，在常见的前寒武纪地区。
Millions of years ago , metamorphic schists , gneisses and quartzites formed impressive , flat - topped inselbergs on a vast plain in the shadow of kilimanjaro.
百万年前，变质的石板片麻岩和石英岩，在乞力马札罗山附近广阔的平原形成壮观岛屿似的。
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?。
The lower Proterozoic Badu Group is one of the oldest metamorphic rock series in the continental margin of Southeast China, and is an integral part of the early Precambrian Zhejiang-Fujian craton.
下元古界八都群是中国东南大陆边缘最古老的变质岩系之一，为早前寒武纪浙闽克拉通的主要组成部分。
This precious mineral is found as crystals within metamorphic rock.
我们可以在变质岩中发现这种珍贵矿物的结晶体。
This theory is contrary to the widely held view that the systems were deposited from metamorphic fluids, that is, from fluids that formed during the dehydration of wet sedimentary tocks.
这一理论与广泛认为的由变质岩流体的沉积形成理论(也就是在潮湿泥沙盐的干燥过程中形成)相反。
Both the eclogite and the felsic gneiss have not undergone the same high-pressure metamorphic event.
榴辉岩的主体围岩是长英质片麻岩，它与榴辉岩不是相同高压变质作用的产物。
This implies that they have close affinity, and probably are derived from same metamorphic basement with a crust formation age of late Paleoproterozoic.
表明它们具有明显的亲缘关系，可能来源于具有古元古代晚期地壳形成年龄的同一变质基底。
Therefore, the extensional movement is also one of the mechanisms for controlling formation of the unifying metamorphic basement and sedimentary cover.
由此可以认为伸展构造亦是控制统一变质基底与沉积盖层的形成机制之一。
H-O isotopes constitute reflects the characteristics of magma flow and metamorphic water interfusion.
石英的氢氧同位素组成反映出岩浆流体与变质水混入溶液特征。
Gold, the world never metamorphic color and texture, eyes filled with a pair of curtain, with fine decorative pattern and classical colour, line is fluent, luxury glaring. A heart.
金，这个世界永不变质的色彩与质地，眼前这一副充满质感的窗帘，以精细的花纹和经典的色彩亮相，奢华炫目，线条流畅。令人心间大动。
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。
This deposit belongs to metamorphic sedimentary type which is controlled by iron-bearing sedimentary construction and metamorphism.
该矿床属于受含铁沉积建造及变质作用控制的变质沉积型矿床。
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 low velocity layer possibly is formed by metamorphic water.
壳内低速层可能是由变质水造成的。
Precambrian metamorphic rocks constituted the basin basement.
盆地的基底是前寒武系变质岩。
The metamorphic petrology of eclogites from northern Dabie Mountains was performed.
研究了大别山北部榴辉岩的变质岩岩石学。
The main parts of SW Yunnan orogenic zones consist of complicated metamorphic rock units.
滇西南造山带的主体由多期变质的岩石单元组成。
According to this analysis, an ideal model of geological evolution in a metamorphic -deformation cycle is suggested.
作者提出了一个变质地质体在一次变质—变形旋回中构造演化的理想模式。
The decompressive metamorphic reactions are a type of important metamorphic reactions.
降压变质反应是一个重要的变质反应类型。
All the evidences indicate Miyi Precambrian metamorphic rock series is a typical low pressure metamorphic terrain.
所有的证据表明该变质地体是一个典型的前寒武纪低压型前进变质地体。
The evolutionary feature of the water activity shows that the metamorphic fluids may have played a buffering role in the metamorphic reaction temperature during the metamorphic stages.
水活度的演化特征表明，变质流体在变质作用过程中，对变质反应温度起着一定的缓冲作用。
The Longshoushan Group of Paleoproterozoic age in the Dongdashan district is a metamorphic terrane composed of metamorphic rocks of amphibolite facies.
东大山地区龙首山岩群形成于早元古代，是一套经角闪岩相变质改造的变质地质体。
Both the eclogite and the felsic gneiss have not undergone the same high - pressure metamorphic event.
榴辉岩的主体围岩是长英质片麻岩，它与榴辉岩不是相同高压变质作用的产物。
Both the eclogite and the felsic gneiss have not undergone the same high - pressure metamorphic event.
榴辉岩的主体围岩是长英质片麻岩，它与榴辉岩不是相同高压变质作用的产物。
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