太古代

Based on the ratio of the minerals the team reports in tomorrow's issue of Nature that CO2 levels during the Archean could have been no higher than about 1000 parts per million—about three times the current level of 387 ppm and not high enough to compensate for the weak sun.

根据两种矿物的比例，研究小组在明天出版的《自然》杂志上报道说：在太古代期间，二氧化碳的水平决不会高于大约奥︱分之一千（1000ppm ）——大约三倍于目前的水平（387ppm ），不足以弥补阳光的弱势。

There are nine stages of activity of different time basalt from Late Archean to Late Tertiary in Fujian Province,which last two billion years.

福建境内各时代玄武岩类的活动期次从晚太古代至晚第三纪共有9次之多，时间间隔达20多亿年，各自所属的层位年代均比较明确。

The nickel mineralization is contained in a layered basic massif surrounded and underlain by an Archean gneiss complex.

此处镍矿化产于一层状基性岩块内，其四周和下面都为太古代片麻岩杂岩围绕。

Sagan and his co-author George Mullen hypothesized that carbon dioxide (CO2) concentrations were much higher during the Archean—possibly 100 times higher than they are today—and therefore the atmosphere could retain enough heat to keep the planet from freezing.

萨根及同事乔治·马伦提出假设：在太古代期间，二氧化碳浓度要高得多——可能比现在高出100倍，因此大气中可能保留了足够的热量，使地球免于冻结。

Based on major and trace elements and isotope geochemical data, it is inferred that Sandouding suite is formed by magma melting of Late Archeozoic continent tholeiite source, and its geochemical variation is controlled by hornblende fractional crystallization. Besides fractional crystallization, the geochemical variation of Huanglingmiao suite is related to the mixing between dacitic magma and felsic magma. Dalaoling suite is probably derived from early Precambrian volcanics.

根据岩石化学和同位素组成推断，三斗坪岩套的源岩主要是晚太古代大陆拉斑玄武岩，母岩浆相当于英安质，岩套内的成分变化主要受角闪石分离结晶作用控制；黄陵庙岩套除受分离结晶作用影响外，成分变化主要与英安质母岩浆和某种长英质岩浆的混合有关；大老岭岩套的源岩亦为早前寒武纪火山岩。

It also implies the presence of Neoarchean rock blocks nearby when the protolith of diopside leptynite was formed.

同时也说明透辉变粒岩的原岩形成时在其附近应该有新太古代岩块存在。

Fujian Province is situated in the southeast edge of the Eurasia Plate and close to the Pacific Plate.

自 2 6亿年前的新太古代以来，在漫长的地质历程中，形成了众多各具特色的地质遗迹。

Mine is too ancient geological ore mixed granite and granite porphyry, ores major components of SiO2, accounting for 76.54%, Al2O312.56%, Qianhui, the fine-grained gray granite block change crystal structure, long-ramp of 27 -- 36 percent, longer-35-42 percent, 20-29 percent quartz, rock weighing 2.6 T/m3, hardness of 5.9-6.3 degrees, the porosity of 0.62-1.03 percent, compressive 1670-1931 kg/cm2, bending 141-167 kg / cm2, ore reserves 2000 investigation Grade D geological reserves 10.02 million cubic meters, designed for the use of reserves of 7.99 million cubic meters; mining area of 0.4 cubic kilometres, the highest elevation of 151 meters, the minimum 56 meters, hilly slope, with perennial Shuixi, More sparse vegetation.

矿山地质矿体属太古代混合花岗岩及花岗斑岩，矿石主要成分SiO2，占76.54%，Al2O312.56%，浅灰，灰白色的细粒花岗变晶块状构造，斜长石含量27-36%，更长石35-42%，石英20-29%，岩石体重2.6T/m3，硬度5.9-6.3度，孔隙度0.62-1.03%，抗压1670-1931kg/cm2，抗折141-167kg/cm2，矿石储量2000勘测D级地质储量1002万立方米，设计利用储量为799万立方米；矿区面积0.4立方千米，最高海拔为151米，最低56米，丘陵缓坡，无常年水溪，植被较稀疏。

In this paper, based on the metallogenetic epoch , the source of base metals and ore-forming fluid arid the relationship between Emeishan Basalt and min.

中国金矿床最重要的成矿时代为中生代，缺乏国外广泛出现的新太古代绿岩型金矿化和新生代金矿化。

Therefore,it is a convincing evidence for the existence of a Neoarchaean ophiolite in China.

蛇绿岩套中的豆荚状铬铁矿提供了中国存在新太古代蛇绿岩的确切证据。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。