| 1. | The nickel mineralization is contained in a layered basic mass if 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。 |
| 2. | Such low levels of sulfate indicate that the archean atmosphere was virtually devoid of oxygen
如此低的硫酸盐浓度，表示太古代大气中的氧气极为稀薄。 |
| 3. | The dongwufenzi formation is an important fe - bearing stratum , while the liushugou formation is a significant stratum for au deposits in middle inner mongolia
根据新的同位素测年资料，色尔腾山岩群的形成时代为新太古代。 |
| 4. | Extremely low sulfate levels could also explain why the oceans did not freeze , considering that the sun was about 25 percent dimmer
太古代之时，太阳的强度比现今弱了25 % ，但海洋却未因此冰封，或许硫酸盐浓度太低可以解释这个现象。 |
| 5. | Isua ' s four - kilometer - wide belt of archean rocks stretches 35 kilometers along the western edge of the bluish - gray monolith of the greenland ice cap
这片矿藏可不好找，它是四公里宽的太古代岩层，沿著蓝灰色格陵兰冰帽硬块的西缘延伸35公里。 |
| 6. | The minerogenetic epoch lasted from paleoarchean to sinian , with neoarchean , paleoproterozoic and mesoproterozoic - qingbaikouan being the culmination periods
成矿时代从古太古代到震旦纪，但以新太古代、古元古代、中元古代青白口纪3个地质时期为成矿高峰期。 |
| 7. | From rocks and sediments , we know the region of xiaoqingling is provided with typical two laies model of the earth " s crust , it " s basement is taihua group of primeval , it " s cover rocks is sediment and lava
从地层和岩石上看，小秦岭地区具有典型的地壳双层模式，其基底是太古代太华群，盖层为沉积岩类和火山岩类。 |
| 8. | The peak is composed of banded biotite tonalite of fine mediate grain developing in mengshan rock suit of fuping period of archean era about 2 . 7billion years ago . it ' s very steep
由27亿年左右形成的太古代阜平期蒙山岩套条带状中细粒黑云母英云闪长岩构成，柱状节理发育，差异性风化剥蚀作用强烈，组成云蒙“山”峰，俗称“挂心崛子” ，形容云蒙峰之陡峻。 |
| 9. | The paper analysis the geological feature of wuyang iron doposit , it study the archean geohistory of wuyang iron deposit , the paper research the developed process of zhao - an iron deposit and tie shan iron deposit , matemorphic effect , oxidation remake process of the iron deposit
摘要分析了舞阳铁矿地质概况，追溯了舞阳铁矿田太古代古地史和赵案庄式铁矿、铁山庙式铁矿的形成过程以及变质作用，氧化作用对矿床的改造作用过程。 |
| 10. | Through the ree charactheristics being studied , it suggests that the xenoliths from hannuoba , ximeng , and puning area have no the trend of lree enrichment , which ratios of lree / hree approximate 1 . therefore , , it is not different from archean lithospheric mantle
稀土元素地球化学研究表明，汉诺坝、锡盟、普宁等地区包体则无lree富集的趋势， lree hree接近于1 ，因此它们与太古代岩石圈地幔不同，稀土元素特征表明它们遭受了强烈亏损。 |
