这些山丘是早期地质时代的遗留物，大部分土壤已被刮光，遭受风吹日晒。
The hills are remnants of an earlier geological era, scraped bare of most soil and exposed to the elements.
判断地质时代的最常用方法就是通过研究化石中所包含的信息。
The most common way of distinguishing periods of geological time is by means of the fossils they contain.
因此，含高山栎岩系的地质时代不会早于上新世中晚期。
The geological age of the present sandstone series is not earlier than the middle-late Pliocene.
从地层层序和植物群的特点上看，该煤组的地质时代为上新世晚期。
Judging from the stratigraphical sequence and the characteristics of this flora, the geological age of the said coal series is late Pliocene.
两个地质时代岩石平均成分的差异，是化学演化真实存在的重要证据。
The difference in average composition between the rocks of two different geologic ages provides the important evidence for the actual occurrence of chemical evolution.
地质时代的浩瀚和地质作用的缓慢是难以在一幅简单的表格中表达的。
The vastness of geologic time and the slowness of geological processes are difficult to capture in a simple chart.
根据它的地质时代，划分为上三叠统含煤建造和中下侏罗统碎屑岩建造。
According to geological age, it may be divided into Upper Triassic coal-bearing formation and Lower-Middle Jurassic clastic rock formation.
火成岩油气储层具有分布范围广、地质时代长、不具岩石类型的专属性。
Igneous rock reservoirs are characterized by their extensive distribution, long geologic time and no exclusiveness of rock types.
前人在该套地层底部发现了铱等元素异常，认为可作为划分其地质时代的依据。
Some elementary anomalies of indium and other elements have been found at the bottom of the stratum, it can be used as the evidence to separate geological era.
从地质时代的一致性上反映硒的来源与西南地区峨眉山玄武岩喷发或风化作用有关。
The consistency of the geologic ages suggests that the selenium source is related to eruption or weathering of the Emeishan basalt in Southwest China.
回头看5.0版的FogBugz，大概是06年8月份推出的，就好像在审视遥远地质时代的化石。
Looking back at FogBugz circa August 2006 (version 5.0) feels a bit like examining the fossil record from a distant geological era.
20世纪古生物的一系列发现和研究，证明了寒武纪是一个最能激发人们想象力的地质时代。
A series of discoveries and studies on ancient life forms in the 20th century demonstrated that Cambrian was a geological period full of the wildest imagination.
丁村人被确定为早期智人，文化时代为旧石器时代中期，所属地质时代则被定为晚更新世早期。
The fossil hominids were diagnosed as early Homo sapiens, with a cultural age of Middle Paleolithic, and geologic age of early Late Pleistocen.
古生物学对出现在史前或地质时代的生命的形成的研究，体现在植物、动物和其它有机体的化石上。
The study of the forms of life existing in prehistoric or geologic times, as represented by the fossils of plants, animals, and other organisms.
18世纪的詹姆斯·赫顿(James Hutton)开辟了地质时代的深度，现在这个研究范围已经很窄了。
In the 18th James Hutton opened up depths of geological time that dwarf the narrow now.
下面所列举的是分布于分流和三角洲前绿砂体的油气田的例子，在地质时代上从晚古生代至中新生代。
The following examples of oil and gas fields in distributary and delta- fringe sand bodies range in age from late paleozoic to middle cenozoic.
渤海沿岸盆地东濮凹陷内发育的“高阻红”地层的地质时代归属和划分对比问题长期以来一直存在争议。
The geological age, stratigraphic subdivision and correlation of the "High Resistivity Red Bed" in the Dongpu Depression, Bohai Sea Coastal Basin, has been an unresolved question.
并参照该区域地质资料，将解译的岩石及岩石组合地层单元内容赋予相应的地质时代，建立地层层序格架。
According to the regional geological data, it endows interpretation contents with the corresponding geologic age, and sets up framework of sequence strata.
土壤中含有着石器时代的人影响的证据，波瑟解释说，这一个时期作为一个独立的地质时代来说已经有很长一段时间了。
The soil contains evidence of the influence of man since the Stone age, bose explains, and this age has already been treated as an independent geological era for a long time.
在整个地质年代中，浮游生物随地质时代的变化用于估计含己成为化石的浮游生物残体的岩石的相对年代很有用。
The changes in plankton over time are useful for estimation of relative ages of rocks that contain the fossilized remains of plankton.
由于侵蚀和海底的下沉，经过地质时代的变迁，中心的火山已经不见踪影，而只留下珊瑚礁环绕或覆盖在沉入海底的火山岛上。
Over geologic time the central volcano becomes extinct, followed by erosion and subsidence beneath the sea surface, leaving the coral reefs as a ring around (or cap on) the submerged island remnant.
四十年后，我们对情形的巨年夜影响力就能使我们可以缔造出一个新的地质时代，即使是水也难逃被人类影响的命运。
Nearly four decades later, our power to alter the environment is considered so profound as to define a new geological age, and even water is not exempt.
层序多显示相对的海平面以及广泛分布的不整合，沉积作用的过程，沉积物的来源，气候和构造活动等随地质时代变化的旋回性。
Sequences tend to show cyclicity of changes in relative sea level and widespread unconformities, processes of sedimentation and sources of sediments, climate and tectonic activity over time.
作者首次比较完整地介绍了赤峰盆地早白垩世岩石地层层序及孢粉化石组合序列，并对各地层单元的区域对比关系和地质时代归属进行了简要讨论。
Comparatively it is the first time that the stratigraphic sequence in Chifeng Basin is introduced completely in this paper, and the spore-pollen assemblages have been set up.
周宏伟先生近年提出，地质时代在成都平原形成的断陷湖延续到两晋南北朝仍然存在，即汉代“方三百里”、“周回二百余里”的“滇池”，再到两晋南北朝的“万顷池”。
Zhou Hongwei proposed that the sag pond formed at the geological age in the Chendu Plain continued till the Western, Eastern Jin's and Southern and Northern Dynasties from roughly a.
虽然在地质记录中有十几次甚至更多的大灭绝，但白垩纪的大灭绝总是引起古生物学家的兴趣，因为它标志着恐龙时代的结束。
While there are a dozen or more mass extinctions in the geological record, the Cretaceous mass extinction has always intrigued paleontologists because it marks the end of the age of the dinosaurs.
有越来越多的证据表明，人类的存在使地球发生了巨大的变化，地质史上的一个新时代已经开始了——即人世时代，一个受人类影响的新时代。
There is growing evidence that the presence of humans has altered the Earth so much that a new Epoch of geologic history has begun—the Anthropocene Epoch, a new human-influenced Epoch.
但是这是个独特的个案，因为对这个时代的正式认可所产生的重要影响要超出地质学领域范围。
But, in this unusual case, formal recognition of the epoch could have wider significance beyond the geology community.
但是这是个独特的个案，因为对这个时代的正式认可所产生的重要影响要超出地质学领域范围。
But, in this unusual case, formal recognition of the epoch could have wider significance beyond the geology community.
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