Scientists Speculate that the amount of radon increases in the ground when rocks layers shift, Exposing new rock, and thus more radon.
科学家们认为，当岩层移动时，地下氡的的含量就会增加；有新岩层露出时。氡气量会增加更多。
Scientists speculate that the amount of radon increases in the ground when rocks layers shift., exposing new rock, and thus more radon.
科学家推测当岩层移位时，新岩石露出，产生更多的氡，这样地层中的氡的数量就增加了。
Over geologic time, increased pressure from the overlying rocks changed the layers of organic material into coal.
经历了数代地质期，上层岩石逐渐增大的压力改变了无机矿物层的构成，最终形成了煤。
The builders covered it with an erosion-resistant cloth, then stacked layers of rocks on the sand.
接着建筑工人用抗腐蚀材料将沙土基座覆盖起来，再往上堆砌岩石层。
It was amazing the way the rocks, compressed into distinct layers over millions of years, changed colors as the canyon darkened from the bottom up.
我对这些岩石感到惊奇，它们是经过几百万年的沉积而形成的，层次分明，当大峡谷从谷底开始渐渐沉人黑暗的时候，我发现岩石居然在变换颜色。
Nearly thirty years earlier, I had seen the sun set over the Grand Canyon; now I wanted to watch it rise, lighting the layers of differently colored rocks from the top down.
约在30年前，我曾看过夕阳在大峡谷落下；如今，我想看着它从这里升起，将一层层不同颜色的岩石从上到下照亮。
These rocks consist of fossil-rich layers containing rapidly evolving Marine organisms such as ammonites, interleaved with layers of volcanic ash.
这些岩层富含化石，其中有快速进化的海洋生物，比如鹦鹉螺化石，岩层与火山灰岩交错排列。
Changed collision layers for building to allow placing on terrain details like rocks (use with caution).
改变碰撞层的建设，让放置在地形细节，如岩石(使用谨慎)。
Changed collision layers so animals now avoid large cliff rocks.
改变了碰撞层，所以动物现在避免大的悬崖岩石。
One of the most important geophysical techniques is core drilling, which is carried out with a hollow cylinder through subsurface layers to obtain samples of rocks.
岩心钻探是最重要的地球物理勘探技术之一。进行钻探时，用一根空心管穿过地表下层获取岩石样品。
Vertically, rocks near the unconformity appear layers which are in turn semi-weathering rock, weathering clay bed and basal conglomerate.
不整合附近的岩层在纵向上呈层分布：从下至上依次为半风化岩石、风化粘土层和底砾岩。
Soft layers in rock are the main features of weathered rocks of different degree.
基岩中存在软弱夹层为岩石的差异性风化的主要特征。
The fact that the layers of rocks of different ages located around Checiny are now on the surface, is a unique phenomenon on a European scale.
位于亨齐内附近的不同年代的岩石层现在露出地表，这在欧洲范围内是一个独特的现象。
The oldest rock layers form the core of the fold, and outward from the core progressively younger rocks occur.
最老的岩层形成了褶曲的核心。从核心向外，逐渐地产出数年轻的岩层。
If the layers of rock in a region are not disturbed, the oldest rocks are at the bottom, the newest at the top.
如果一个地区的岩层没有被弄乱，最古的岩石在底部，最新的在顶部。
There exist four layers of volcanic rocks in Sinian and Cambrian strata of Kuruktag area, Xinjiang.
在新疆库鲁克塔格地区的震旦纪和寒武纪沉积岩地层中，分布有四层火山岩。
Thin basalt (spilite) layers are often interbedded in those deep Marine radiolaria-bearing siliceous rocks.
与深海相放射虫硅质岩相伴，则夹有玄武岩(细碧岩)层。
The Kongling Complex consists of basement rocks, supracrustal rocks and some mafic rocks occurring as lenses, boudins or layers.
崆岭杂岩由基底岩石加表壳岩石组成，另外有一些基性岩侵入其中。
The VTI media is caused by fine periodic thin layers, and it is one of most sedimentary rocks researched by geophysicists.
由周期性薄互层引起的VTI介质是研究比较广泛的一类各向异性介质。
stratovolcano: a steep-sloped, conical structure composed of alternating layers of hardened lava, solidified ash, and rocks thrown out by earlier eruptions.
胡德山是一个成层火山：一个陡峭的园锥形山，由层层堆叠的硬化的熔岩、结块的火山灰和早期喷发是甩出的岩石构成。
The fossils were preserved in rocks formed by layers of ancient Marine mud in south-eastern Morocco.
这些化石都保存在由古代东南部摩洛哥海泥层形成的岩石。
Scientists then began searching the layers of rocks delineate mass extinctions.
科学家们开始研究详细记录了大规模灭绝事件的岩石层。
The porosity and permeability of typical basaltic rocks have been analyzed. Four effusive facies basalt layers and two volcanic necks with rock outcrops can be identified.
牛头山古火山历经四期喷发，地表可见四层喷溢相玄武岩层和两处火山颈相岩石出露。
The porosity and permeability of typical basaltic rocks have been analyzed. Four effusive facies basalt layers and two volcanic necks with rock outcrops can be identified.
牛头山古火山历经四期喷发，地表可见四层喷溢相玄武岩层和两处火山颈相岩石出露。
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