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。
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。
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。
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。
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 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 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。
Graphite, chlorite, talc, mica, garnet and staurolite are distinctive metamorphic minerals.
石墨、绿泥石、滑石、云母、石榴石及十字石都是典型的变质矿物。
Felsic gneiss is the most widely distributed rock type in Archean metamorphic complex areas.
长英质片麻岩是太古宙变质杂岩区最主要的岩石类型。
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。
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。
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。
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。
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 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。
Interpretation and evaluation for individual well reservoir in buried hill of Leng 124 metamorphic rock was satisfactory.
从而对冷124变质岩潜山单井储层进行了解释与评价，取得了满意效果。
The high grade metamorphic complexes in middle Hainan Island are composed of gneisses, migmatites, granulites and charnockites.
琼中地区存在由片麻岩、混合岩、麻粒岩和紫苏花岗岩组成的高级变质杂岩。
The supracrustal sequences in the dabie complex in northeastern hubei belongs to a late archean stratified metamorphic sequences.
鄂东北大别杂岩中的表壳岩系属于晚太古代层状变质岩系。
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。
Volcanic rock, clastic and metamorphic rock reservoirs integrated to form the complex petroleum accumulation region in Erleim basin.
火山岩油藏和碎屑岩、变质岩类油藏共同组成了二连盆地复式油气聚集区。
Besides metamorphic grade, the nature of original rocks and the precursor of carbonaceous material may also influence graphitization.
除了变质程度以外，原岩的类型和碳的原始物质的种类也会影响碳的石墨化作用。
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。
The deformation was changing from plastic intensity to weakness and the metamorphic facies ranged from amphibolite to low-grade greenschist.
变形由强烈的塑性变形到弱变形，变质由角闪岩相到低绿片岩相及低于低绿片岩相。
It has many similarities to the greenstone belt in respect to the sequence of metamorphic complex, petrochemistry and trace element characters.
从变质杂岩地层层序、岩石化学、微量元素特征来看，它与绿岩带有许多相似之处。
It has many similarities to the greenstone belt in respect to the sequence of metamorphic complex, petrochemistry and trace element characters.
从变质杂岩地层层序、岩石化学、微量元素特征来看，它与绿岩带有许多相似之处。
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