环斑花岗岩是发育于前寒武纪的一种特殊岩石。
因此，前寒武纪的动物肯定曾经生活在这么深的地方。
Precambrian animals must therefore have lived at such depths.
发现的并不是前寒武纪的动物本身，而是它们的足迹。
These findings are not of Precambrian animals themselves, but of their tracks.
研究结果还表明磁化率能够作为前寒武纪的古气候替代性指标。
This research also reveals that susceptibility can be used as a palaeoclimate proxy for Precambrian successions.
初始地壳，尤其是前寒武纪的变质基底是金矿密集区形成的物质基础。
It is thought that the original crust, especially the metamorphose basement of Precambrian is the base of gold-ore formation.
一些乐观的人士将这种技术的繁荣比作是5亿年前寒武纪的大爆炸，当时地球上的进化在某种程度上呈爆发态势，因为细胞已经开始完善和正常化。
Some excited people have likened this technological upheaval to the Cambrian explosion 500m years ago, when evolution on Earth speeded up in part because the cell had been perfected and standardised.
以准噶尔煤盆地的构造演化为依据，以煤矿产为“化石”，通过对煤盆地形成和构造演化各个阶段的研究，确定了准噶尔煤盆地具有前寒武纪的结晶基底。
On the basis of tectonic evolution in Junggar coal basin and taking coal mineral as "the fossil" and by way of studying the basin formation and tectonic evolution in every stage.
石英是石英——由四个氧离子围绕的硅离子——200万年前的更新世石英和5亿年前的寒武纪石英之间没有任何区别。
Quartz is quartz—a silicon ion surrounded by four oxygen ions—there's no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago.
尽管伊迪卡拉是以澳大利亚的一处地名而命名，但伊迪卡拉沉积层却遍及世界各地，并且可追溯到前寒武纪时代。
Although named after a site in Australia, the Ediacaran formation is worldwide in distribution and dates to Precambrian times.
理查德·道金斯：大卫，我知道你正在做一个关于寒武纪和前寒武纪化石的专题节目。
RD: I know you're working on a programme about Cambrian and pre-Cambrian fossils, David.
在5亿年前的寒武纪，似蠕虫生物逐渐演化成似鱼生物。
During the Cambrian period, 500 million years ago, worm-like creatures were evolving into fish-like creatures.
片麻岩，变质岩，可以发现，在常见的前寒武纪地区。
Gneiss, a metamorphic rock, can be commonly found in Precambrian areas.
就全球而言，前寒武纪和新生代是金矿的重要成矿期。
Among them the precambrian and cenozoic eras are the main metallogenic epoches in the world.
摘要赣东北前寒武纪港边火成杂岩体广泛发育不同类型的矿物间不平衡结构，指示该杂岩体曾发生过广泛的岩浆混合作用。
There are various lopsided texture types among minerals, indicating extensive magma mixing in the Precambrian Gangbian magma-mixed complex from northeastern Jiangxi Province.
概述了中国在晚前寒武纪——寒武纪生物化石群研究多方面（尤其是大化石）的主要成就。
The many achievements in the study on. the fossils (in especial megafossils) of late Precambrian - Cambrian in China are outlined.
化学化石(烷烃和卟啉)是前寒武纪地层中生命存在的唯一证据。
Chemical fossils (e. g. alkanes and porphyrins) are often the only evidence for life in rocks of PRECAMBRIAN age.
指出区内的地震活动范围、位置、强度和深度受前寒武纪结晶基底的起伏构造形态和深度的影响与制约。
The study shows that the range, location, intensity and depth of earthquakes are effected and restricted by the rolling topography of Precambrian crystal basement.
克拉通包含通常为前寒武纪岩石的结晶基底，即地盾，也包含围绕地盾的并在其上有平卧或近于平卧的沉积物或沉积岩层的地台。
A craton includes a crystalline basement of commonly Precambrian rock called a shield, and a platform in which flat-lying or nearly flat-lying sediments or sedimentary rock surround the shield.
因而前寒武纪化石的缺失和寒武纪三叶虫等突发式出现，好象一把双刃剑，对达尔文演化学说的塔基构成了威胁。
Therefore the deficiency of pre-Cambrian fossil and the sudden emergence of Cambrian trilobite are like a double edged sword posing threat for the very foundation of Darwin evolutionism.
浙西南前寒武纪变质岩中有七条较大规模的韧性剪切带，它们主要呈NE或NNE向展布，发育在八都群和龙泉群中。
There are seven ductile shear zones developed in Precambrian metamorphic rock in southwest Zhejiang. They mainly extend from NE or NNE to SW or SSW and are developed in Badu group and Longquan group.
未变形未变质的前寒武纪岩墙群的存在表明前寒武纪华北克拉通已经具有了刚性板块的性质。
The existence of the undeformed and unmetamorphed Precambrian dike swarms shows that the Precambrian North China Craton had been a rigid plate.
鲁西地区的前寒武纪侵入岩分为太古代泰山期和早元古代傲徕山期二部分。
The Precambrian intrusive rocks in western Shandong area mainly fall into two parts: the Taishanian (Archean) and the Aolaishanian (early Proterozoic) intrusive rocks.
所有的证据表明该变质地体是一个典型的前寒武纪低压型前进变质地体。
All the evidences indicate Miyi Precambrian metamorphic rock series is a typical low pressure metamorphic terrain.
前寒武纪铁建造中的金矿床是世界上一种重要的金矿类型，深受国内外地质工作者的重视。
Gold deposit in Precambrian banded iron formation is an important type of gold ore, which has been paid more attention by many domestic or alien geologist.
构造地层学方法是变质岩，尤其是前寒武纪变质岩地区地层研究的有效方法。
Structure-stratigraphic method is an effective method for stratigraphic study in Precambrian metamorphic rock area.
赣东北前寒武纪港边火成杂岩体广泛发育不同类型的矿物间不平衡结构，指示该杂岩体曾发生过广泛的岩浆混合作用。
There are various lopsided texture types among minerals, indicating extensive magma mixing in the Precambrian Gangbian magma-mixed complex from northeastern Jiangxi Province.
原生代的，元古代的前寒武纪两个时期中的后一个时期的，属于这个时期的，在这个时期的在这个时期海绵、海洋蠕虫和其它形式的海洋生命出现。
Of, belonging to, or being the later of two divisions of Precambrian time, during which sponges, sea worms, and other forms of sea life appeared.
本文报道了一个前寒武纪古俯冲杂岩的例子。
This paper tackles the problem of a Middle Proterozoic fossil subduction complex.
本文报道了一个前寒武纪古俯冲杂岩的例子。
This paper tackles the problem of a Middle Proterozoic fossil subduction complex.
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