Diamonds, an occasional component of rare igneous rocks called lamproites and kimberlites, have never been dated satisfactorily.
钻石是稀有火成岩（称为煌斑岩和金伯利岩）中偶尔出现的一种成分，其年代测定方法从未令人满意。
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 granite of the "Suhler Scholle " is capped with Permian sediments and igneous deposits.
苏勒·肖勒花岗岩上覆盖着二叠纪沉积物和火成岩。
The Yogo dike is a narrow subvertical sheet-like igneous body.
Yogo堤防是一个狭窄的亚垂直片状火成体。
In geology, igneous rocks were once hot liquid.
译在地质学中，火成岩曾是炽热的液体。
Plutonic igneous rock having visibly crystalline texture.
深成火成岩石，有明显的晶体纹理。
I wonder if there are further classifications of igneous rocks.
我想知道火成岩还有进一步的类型划分吗。
So eruption of volcanoes is one way of producing igneous rocks.
那么火山喷发是形成火山岩的一种方式罗。
The most common intrusive in the order of igneous rocks is granite.
在火成岩系列中最常见的侵入体是花岗岩。
Key points: texture, structure and classification of igneous rocks.
重点：岩浆岩的分类、结构和构造。
The rocks here are igneous and do not fracture along predictable lines.
这儿的石头都是火成岩，石头的裂缝极不规则。
Describing igneous rocks with a high content of the alkali metal oxides.
描述有高含量碱金属氧化物的火成岩。
The activity of igneous rocks mainly concentrates in Neogene and Quaternary.
火成岩活动主要集中在晚第三纪和第四纪。
Is there any other way of producing igneous rocks besides the volcanic eruption?
除了火山喷发形成岩浆岩这一种方式外，还有其它方式吗？
Such meteorites look like igneous rocks from earth-hence the belief that Vesta has a mantle.
这种陨石与地球上的火成岩相似—因此可以相信灶神星上有地幔存在。
In the igneous rock formation, CBIL shows fractures, vugs and weathered residual gravel clearly.
在火成岩地层中，它清晰地显示裂缝、孔洞以及风化残积的砾石。
Mineral assemblage, texture and field occurrence indicate an igneous origin for the charnockites.
矿物组成、结构和野外产状表明：这些紫苏花岗岩是火成成因的。
The igneous rock kimberlite sets off a yellow diamond from South Africa, a country known for its diamond mines.
在南非这个以钻石矿而闻名的国家，金伯利岩衬托出了这颗黄钻的美丽。
In Tazhong Area, the main factor of impacting average velocity is the depth of stratum and lithology of igneous.
在塔中地区，影响平均速度的主要因素是地层埋深和火成岩的岩性。
Potassium-argon dating: Method for determining the age of igneous rocks based on the amount of argon-40 in the rock.
钾-氩年代测定法：根据岩石内氩-40的含量来测定火成岩形成年代的方法。
This 28-km segment was blasted through weathered igneous rocks four years ago to provide a shorter route to the town of Weixi.
这段28公里长的公路是四年前通过爆破风化的火成岩而成的一条通往维西的捷径。
A coarse-grained, plutonic or intrusive igneous rock of felsic composition having large crystals of quartz, feldspar and mica.
一种粗粒的，深成的或侵入的长英质成分的火成岩，含石英、长石和云母的粗大晶体。
Such changes can occur through the activity of fluids in the Earth and movement of igneous bodies or regional tectonic activity.
这些变化可以通过地球内的流体的活动，火成岩体的运动或区域性构造活动而发生。
Three main rock types make up the geology of Singapore: igneous, sedimentary and alluvium. Where is the main source of granite found?
形成新加坡地质的三种主要岩石类型：火成岩、沉积岩和冲积岩。哪里是花岗岩的主要来源地？
The dark colored, microgranular and igneous-texture enclaves provide reliable evidence that indicates the existence of magma mingling.
暗色、细粒且具火成结构的岩石包体是指示岩浆混合作用存在的可靠证据。
The horizontal lines across the top half of the image are intrusions of igneous rock, where magma poked up to the surface from deep underground.
照片的上半部是火成岩，由地球深处涌出地面的岩浆形成。
Fluid dynamics has extensively been introduced in geology, especially in igneous petrology, causing creation of a new disciplinary growing point.
近年来，流体动力学被广泛引入地质学，特别是岩浆岩石学领域，逐渐形成新的学科生长点。
Fluid dynamics has extensively been introduced in geology, especially in igneous petrology, causing creation of a new disciplinary growing point.
近年来，流体动力学被广泛引入地质学，特别是岩浆岩石学领域，逐渐形成新的学科生长点。
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