Because they are porous, sedimentary rocks, such as sandstones and conglomerates, are important potential sources of groundwater.
由于像如砂岩和砾岩这样的沉积岩是多孔的，它们是地下水的重要潜在来源。
Although most fossils are found in marine sedimentary rocks, they also are found in terrestrial deposits left by streams and lakes.
虽然大多数化石是在海洋沉积岩中发现的，但它们也存在于河流和湖泊所留下的陆地沉积物中。
In this process, sedimentary rocks that originally formed on the seabed may be folded upwards to altitudes of more than 26,000 feet.
在这个过程中，最初形成于海床上的沉积岩可能会向上折叠到26000英尺以上的高度。
Attempts were made to calculate Earth's age from the thickness of surviving sedimentary rock and from the current level of the oceans' salinity.
人们曾试图根据现存沉积岩的厚度和目前海洋的盐度水平来计算地球的年龄。
It is a global record: there is remarkably little variation in isotope ratios in sedimentary specimens taken from different continental locations.
这是一个全球性的记录：在取自不同大陆位置的沉积标本中，同位素比率的变化非常小。
The sedimentary systems were divided according to the characteristics in rock types, color and authigene.
根据岩石类型、颜色、自生矿物等特征，对沉积体系进行划分。
The sedimentary rocks are graywacke, siltstone, tuff andpellitie, etc.
沉积岩有杂砂岩、粉砂岩、凝灰岩、泥质岩等。
Structure is the main factor which controls the sedimentary basin formation.
构造活动是控制沉积盆地形成的主要因素。
These characteristics can be used to study sedimentary facies and guide oil exploration.
利用这些地震响应特征可研究沉积相，并进一步指导石油勘探工作。
It immediately spotted outcrops of layered sedimentary rocks, the first ever seen on Mars.
它立即发现数个沉积岩的层状露头，这是在火星上首见。
In many sedimentary basins the salinity of the formation water increases with depth or compaction.
在许多沉积盆地中，地层水的含盐量随深度或压实作用而增高。
It has special physical and mechanical properties due to its composition, structure and sedimentary environment.
特殊的发育环境、物质组成和结构导致了珊瑚砂具有独特的物理力学性质。
My inspiration comes from many diverse sources. I like to describe inspiration in terms of layers, like sedimentary rock.
我的灵感来源于很多方面的事物。我喜欢按层(例如：沉积岩)描述灵感。
Haidian in Beijing, is not only famous by technology and education, but also has sedimentary deposits of culture and arts.
北京市海淀区不仅以科技、教育著称，文化艺术积淀也非常深厚。
To restore the original occurrence condition of a primary sedimentary structure is a routine work for palaeocurrent analysis.
恢复原生沉积构造的原始产状要素，是古水流分析中的一项重要基础工作。
If there are a lot of reflections and resonances near the point (for instance in a sedimentary valley) the shaking will last longer.
如果在那点附近有很多反射和共振(比如在沉积山谷)，震动会持续得更长。
The Dabieshan Group is a complex composed of early formed sedimentary rocks, magmatic rocks of varying ages and types and tectonic slices.
大别山杂岩是由早期的沉积地层和不同期次、不同类型的岩浆岩以及构造岩片所组成的杂岩体。
Stromatolite and molar-tooth structures are two kinds of peculiar Precambrian sedimentary phenomena, attracting great attention from geologists.
叠层石和臼齿构造是前寒武纪较为引人注目的两种沉积现象。
A new exploration idea and direction are proposed based on the comprehensive study of the source rocks, the sedimentary system and the reservoir.
在对烃源岩、沉积体系和储层等综合研究基础上，提出了新的勘探思路和勘探方向。
The large window frames are made from slabs of a sedimentary stone called travertine. Their funnel-like shape helps to further reduce heat buildup.
大的窗户框架由一种称为石灰华的沉积石板制成。它们漏斗一样的形状，有助于进一步减少热量积聚。
The carbonate platform sedimentary system is further divided into such facies as restricted platform, open platform, platform margin reef and ramp.
碳酸盐台地沉积体系又可进一步分为局限台地、开阔台地、台地边缘礁滩及缓坡等沉积相。
From data sent back to Earth, scientists know that the rover landed on several hundred metres of sedimentary deposits that must have formed in ancient lakes.
从传回地球的数据分析，科学家们了解到漫游者降落在一个几百米深的沉积堆上，而这个沉积堆一定是在一个古老的湖泊中形成的。
The third one, which is the first monograph of sedimentary petrology in China, is Sedimentary Rocks published by Petroleum Chemical Press in 1977. Prof.
第三本是《沉积岩》，石油化学工业出版社1977年出版，这是我国第一本沉积岩石学专著。
Since early 1950s, China has initiated oil and gas exploration in 82 large to mid-sized sedimentary basins, from which over 500 oilfields are identified.
自上世纪50年代初期以来，中国先后在82个主要的大中型沉积盆地开展了油气勘探，发现油田500多个。
Many sedimentary rocks contain such features as ripple marks, exactly like those we can see forming in sediments at the bottom of present-day lakes or shallow seas.
我们可以看到，现在的湖底或浅海底部的沉积物中形成了波痕。许多沉积岩都含有类似这种波痕的特征。
On the basis of modern theory of sedimentology and stratigraphy, the paper analyses the stratigraphic sequence and sedimentary environment of Sinian system in the area.
本文运用现代沉积学和地层学理论，对区内震旦系岩石地层进行了基本层序研究与沉积环境分析。
Migration can be local or can occur along distances of hundreds of kilometers in large sedimentary basins, and is critical to the formation of a viable petroleum system.
运移可以是局部的，但在一个大型沉积盆地内，运移可以达到几百公里，这对于有活力的石油系统的形成是关键性的。
Migration can be local or can occur along distances of hundreds of kilometers in large sedimentary basins, and is critical to the formation of a viable petroleum system.
运移可以是局部的，但在一个大型沉积盆地内，运移可以达到几百公里，这对于有活力的石油系统的形成是关键性的。
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